Noise Or Undesired Signal Reduction Patents (Class 348/607)
  • Patent number: 10575020
    Abstract: Compensation offsets are provided for a set of reconstructed samples of an image. Each sample has a sample value. A method of providing the compensation offsets comprises selecting, based on a rate distortion criterion, a classification from among a plurality of predetermined classifications. Each predetermined classification has a classification range smaller than a full range of the sample values and is made up of a plurality of classes, each defining a range of sample values within the classification range, into which class a sample is put if its sample value is within the range of the class concerned. A compensation offset is associated with each class of the selected classification for application to the sample value of each sample of the class.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: February 25, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Edouard Francois, Guillaume Laroche
  • Patent number: 10552671
    Abstract: Described is a novel method for feature extraction for automatic gait recognition. This method uses Multi-kernel Fuzzy-based Local Gabor Binary Pattern. From a captured gait video sequence, the gait period is determined then a gait energy image is constructed to represent the spatial-temporal variations during one motion cycle of the gait sequence. Then, each gait sequence is represented with a feature vector. The computation of this vector is conducted by first applying the 2D Gabor filter bank then encoding the variations in the Gabor magnitude using a multi-kernel fuzzy local binary pattern operator. Finally, gait classification is performed using a support vector machine.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: February 4, 2020
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Amer Ghazi Abdullah Binsaadoon, El-Sayed M. El-Alfy
  • Patent number: 10530996
    Abstract: An electronic device comprising a processing unit and a memory that stores a plurality of program instructions. The processing unit executes the program instructions to perform the following steps: (a) storing pixel data of multiple pixels of a picture in the memory, the number of the pixels being greater than the number of pixels in one horizontal line of the picture; (b) performing an integral image operation on the pixel data to obtain integral image data; (c) storing the integral image data in the memory; (d) using the integral image data to calculate a low-frequency component of a target pixel of the picture; and (e) based on the low-frequency component, selectively performing a temporal noise reduction operation on the target pixel.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: January 7, 2020
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Kai Liu, Wen-Tsung Huang
  • Patent number: 10504211
    Abstract: According to one implementation, a video processing system includes a computing platform having a hardware processor and a system memory storing a sample-based video denoising software code. The hardware processor executes the sample-based video denoising software code to receive a video sequence, and select a reference frame of the video sequence to denoise. For each pixel of the reference frame, the hardware processor executes the sample-based video denoising software code to map the pixel to a sample pixel in each of other frames of the video sequence, identify a first confidence value corresponding to each of the sample pixels based on the mapping, identify a second confidence value corresponding to each of the sample pixels based on the frame that includes the sample pixel, and denoise the pixel based on a weighted combination of the sample pixels determined using the first confidence values and the second confidence values.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: December 10, 2019
    Assignee: Disney Enterprises, Inc.
    Inventors: Christopher Schroers, Henning Zimmer, Alexander Sorkine Hornung
  • Patent number: 10491904
    Abstract: Video pixel line buffers are widely used for data processing in video codecs. Video data may be packed into buffers configured to store a plurality of words, each word comprising a series of bits. The video data may be associated with two or more channels. In order to reduce realization costs, data blocks from two different channels may be packed from opposite sides of a word in the buffer in opposite directions. In some embodiments, data blocks from two or more physical channels may be mapped to two or more virtual channels, the virtual channels having balanced data block sizes. The data blocks associated with the virtual channels may then be packed to one or more buffers.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: November 26, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Shu Lin, Mang Li, Kai Wang, Atul Garg
  • Patent number: 10477250
    Abstract: A target sample x(i,j) of a two-dimensional array of reconstructed samples is filtered based on values of samples in a neighboring region of the target sample to produce a two-dimensional array of modified reconstructed samples, according to the equation: y(i,j)=round(x(i,j)+g(?m,n?Ra(m,n)ƒ(x(i,j)?b(m,n)x(m,n)))), where y(i,j) is a modified target sample value, R is the neighboring region of the target sample, a(m,n) and b(m,n) are real-valued coefficients, round(x) is a function that maps the value x to an integer value in the range [0,2B?1], B is the number of bits representing each sample of the two-dimensional array of modified reconstructed samples, ƒ(x) and g(x) are functions, wherein (a) ƒ(x) is a non-linear function, or (b) g(x) is a non-linear function and both a width and a height of R is more than one sample.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: November 12, 2019
    Assignee: Cisco Technology, Inc.
    Inventors: Arild Fuldseth, Steinar Midtskogen
  • Patent number: 10477214
    Abstract: A method for inter-color residual prediction using an improved scaling parameter coding is disclosed. In one embodiment, a scaling parameter is used for inter-color residual prediction between a first color component and a second color component. The scaling parameter is coded using context-based coding having the same number of context models as the longest binary code for the absolute values of the scaling parameter. For example, when the first scaling parameter is selected from a group consisting of 8, 4, 2, 1, 0, ?1, ?2 ?4 and ?8, the absolute values of the scaling parameter can be represented by binary codes with the longest binary code having 4 bits. The context-based coding for the absolute scaling parameter also uses 4 context models. In a second embodiment, the scaling parameter is coded using binary codes by assigning a shorter binary code to a larger non-zero scaling parameter.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: November 12, 2019
    Assignee: HFI Innovation Inc.
    Inventors: Xianguo Zhang, Kai Zhang, Jicheng An
  • Patent number: 10469857
    Abstract: In a method for transmitting video for a display panel between a transmitter in electronic communication with a receiver over a wireless communication channel, the method includes: receiving, by a transmitter, a data signal from a data source; receiving, by the transmitter, a return signal from a receiver; encoding, by the transmitter based on the return signal, the data signal utilizing a plurality of encoder blocks to generate a layered encoded data stream, wherein a first encoder block encodes the data signal and each subsequent encoder block encodes a difference between an input of a preceding encoder block and an output of a quantizer of a preceding encoder block; and transmitting, by the transmitter, the layered encoded data stream to the receiver for decoding and display on the display panel.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: November 5, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Gregory W. Cook, Amin Mobasher
  • Patent number: 10448014
    Abstract: Techniques related to improved video denoising using content adaptive motion compensated temporal filtering are discussed. Such techniques may include determining whether a block of a video frame is motion compensable and, when the block is motion compensable, generating a denoised block corresponding to the block using the block itself and averaged reference blocks from two or more motion compensation reference frames.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: October 15, 2019
    Assignee: Intel Corporation
    Inventors: Sebastian Possos, Atul Puri
  • Patent number: 10439849
    Abstract: A method and apparatus for equalization in a communication system. The method includes receiving an input of a block of symbols, filtering the input in the frequency domain, calculating an error factor in the time domain based on the filtered input, updating tap weights of the equalizer in the frequency domain using circular correlation based on the error factor and the conjugate of the input in the frequency domain, and outputting the filtered input.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: October 8, 2019
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Kabiru Akande, Naveed Iqbal, Azzedine Zerguine, Abdelmalek Zidouri
  • Patent number: 10439852
    Abstract: Embodiments of the present disclosure provide a signal processing apparatus, a signal transmitting apparatus and a receiver, which are adapted for a frequency division multiplexing system having a high-order modulation format. A receiver having a high-magnification sampling rate by inserting a pilot signal between neighboring subcarriers at a transmitter side, calculating a laser phase noise according to a phase of the pilot signal at a receiver side, and performing down-sampling and equalization processing after performing carrier phase recovery according to the laser phase noise, so that a laser phase noise having a wide frequency may be accurately compensated, thereby having a relatively powerful carrier phase recovery ability.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: October 8, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Liang Dou, Zhenning Tao
  • Patent number: 10432438
    Abstract: A method and apparatus for equalization in a communication system. The method includes receiving an input of a block of symbols, filtering the input in the frequency domain, calculating an error factor in the time domain based on the filtered input, updating tap weights of the equalizer in the frequency domain using circular correlation based on the error factor and the conjugate of the input in the frequency domain, and outputting the filtered input.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: October 1, 2019
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Kabiru Akande, Naveed Iqbal, Azzedine Zerguine, Abdelmalek Zidouri
  • Patent number: 10389972
    Abstract: In a video signal transmission device, a camera control device includes: a compression unit for compressing a return video signal; a compression/expansion unit for compressing/expanding a prompter video signal; a frame synthesis unit for synthesizing the video signals; an encoding unit for encoding the synthesized video signal; and a modulation unit for modulating the encoded video signal and transmitting the modulated video signal to the camera adaptor. A camera adaptor includes: a demodulation unit for demodulating the video signal from the camera control device; a decoder unit for decoding the demodulated video signal; an expansion unit for separating one video signal from the decoded video signal, expanding the video signal, and restoring the video signal to the return video signal; and an expansion/compression unit for separating one video signal from the decoded video signal, compressing/expanding the video signal, and restoring the video signal to the prompter video signal.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: August 20, 2019
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventor: Akihiro Kato
  • Patent number: 10387999
    Abstract: An image processing apparatus includes a smoothing section configured to smooth, for an image after gradation conversion with which gradation display on a monitor becomes appropriate, a signal with a higher Weber ratio, to a signal value, of a quantization error caused by the gradation conversion with higher strength, and a random component addition section configured to add a larger random component to the signal with the higher Weber ratio excluding a neighborhood of a minimum signal value for an image after the smoothing.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: August 20, 2019
    Assignee: Olympus Corporation
    Inventor: Shinya Takasumi
  • Patent number: 10374844
    Abstract: Signal equalization is provided, according to certain aspects, by a frequency-domain equalization circuit, a noise-whitening filter and a noise predictor. A sequencer is used to control ordering of the equalization circuit, a noise-whitening filter and a noise predictor. The equalization circuit provides equalization the frequency domain by converging on symbols of the input signal. The noise-whitening filter and the noise predictor filter colored noise from a signal responsive to the equalization circuit. The sequencer controls operation of the noise-whitening filter by detecting an indication of convergence of the symbols from input signal and causing the noise-whitening filter to commence suppression of colored noise from a signal derived from an output by the equalization circuit.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: August 6, 2019
    Assignee: NXP B.V.
    Inventors: Özgün Paker, Petrus Josephus Franciscus Hoeven
  • Patent number: 10355887
    Abstract: An iterative two dimension equalizer usable in a receiver of orthogonal time frequency space (OTFS) modulated signals is described. In one configuration of the equalizer, a forward path generates, from received time-frequency domain samples and a channel estimate, estimates of data bits and likelihood numbers associated with the estimates of data bits, generated by delay-Doppler domain processing. In the feedback direction, the estimates of data bits are used to generate symbol estimates and autocorrelation matrix estimate in the time domain. In another configuration, a soft symbol mapper is used in the feedback direction for directly generating the feedback input symbol estimate without having to generate estimates of data bits.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: July 16, 2019
    Assignee: Cohere Technologies, Inc.
    Inventors: Ronny Hadani, Shachar Kons
  • Patent number: 10348531
    Abstract: A system and apparatus are disclosed for a method and apparatus for equalizing signals. An apparatus that incorporates teachings of the present disclosure may include, for example, an equalizer having a channel estimation calculator for calculating a time domain channel estimation from a baseband signal, a Fast Fourier Transform processor for translating the time domain channel estimation to a frequency domain channel estimation, a tap weight calculator for calculating a frequency domain tap weight according to the frequency domain channel estimation, an inverse Fast Fourier Transform processor for translating the frequency domain tap weight calculation to a time domain tap weight calculation, and a filter for equalizing the baseband signal according to the time domain tap weight calculation.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: July 9, 2019
    Assignee: AT&T Intellectual Property I, L.P.
    Inventor: Arunabha Ghosh
  • Patent number: 10339901
    Abstract: A display device includes a controller and a display panel. The controller receives original image data and output a display image signal. The display panel receives the display image signal and displays a display image corresponding to the display image signal. The controller includes an image shift controller and a memory. The image shift controller generates shifted image data by modulating the original image data to shift the display image sequentially along a preset shift path on the display panel. The memory stores a shift path value indicating a distance by which the display image has been shifted on the preset shift path. The image shift controller generates the display image signal by processing the shifted image data. When the display device is powered on, the image shift controller generates shifted image data corresponding to a shift path value stored in the memory.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: July 2, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kang Hee Lee, Seung Ho Park, Mi Young Joo
  • Patent number: 10325584
    Abstract: An active noise cancelling device including a sensor configured to convert acoustic signals into first audio signals and a speaker acoustically coupled to the sensor A control stage is configured to control the speaker based on the first audio signals to cause the speaker to produce cancelling acoustic waves that tend to suppress acoustic noise components in the acoustic signals. The control stage includes sigma-delta modulator digital filters.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: June 18, 2019
    Assignees: STMicroelectronics S.r.l., STMicroelectronics (Shenzhen) R&D Co. Ltd
    Inventors: Luca Molinari, Xi Chun Ma, Sandro Dalle Feste, Martino Zerbini
  • Patent number: 10308250
    Abstract: To suppress an unstable operation of a device caused by filtering, an output selection unit is configured to acquire an unfiltered value representing an input signal (signal before filtering) stored in an input holding unit, a filtered value representing a signal acquired by filtering the input signal by a filtering unit, and a previous output value representing an output signal output at a previous time, select a middle value out of the filtered value, the unfiltered value, and the previous output value, and set the selected middle value as a current output value of an output signal.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: June 4, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Tomohiro Naruse
  • Patent number: 10311812
    Abstract: A display apparatus includes a display panel, a timing controller, a data driver, and a gate driver. The timing controller receives image data at a number of frames per second of a first level and generates a gate control signal and a data control signal. The timing controller includes an image converter that operates in film mode or normal mode when the input image data are moving image data, and that outputs film image data at a number of frames per second of second level lower than the first level during the film mode. The data driver applies a data voltage corresponding to the film image data to the display panel based on the data control signal. The gate driver applies a gate voltage to the display panel based on the gate control signal. The display panel operates at a frequency of the second level during the film mode.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: June 4, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyoungwon Lee, Kwan-young Oh, Jimyoung Seo, Bonghyun You, Junghwan Cho, Sangsu Han
  • Patent number: 10302952
    Abstract: Provided is a configuration for executing display information output control with improved visibility of a user wearable or portable display unit. A controller configured to execute display information output control on a user wearable or portable display unit is included. The controller sets a turning on (ON) period and a turning off (OFF) period and controls switching between afterimage consideration pulse display having the turning off period being set to be within an afterimage recognition period and normal pulse display having the turning off period being set to be longer than or equal to the afterimage recognition period, the turning on (ON) period being an output period of display information to the display unit, the turning off (OFF) period being a non-output period of display information to the display unit. The controller executes the switching control between the afterimage consideration pulse display and the normal pulse display depending on eye velocity of a user.
    Type: Grant
    Filed: September 8, 2015
    Date of Patent: May 28, 2019
    Assignee: SONY CORPORATION
    Inventors: Ichiro Mayama, Hidenori Kikuchi, Kayoko Tanaka
  • Patent number: 10305677
    Abstract: A system and method for estimating clock drift in underwater instruments is provided. The method can include transmitting a signal from a source to a plurality of underwater receivers or a single receiver. Upon recovery of the underwater receivers, an initial sampling frequency value can be used to generate received data waveforms from data stored on each underwater device. The generated received waveforms can be used to generate a channel estimate for each receiver, and the channel estimates can be used to provide an estimate of the source motion during the transmission. The estimated source motion can then be used to estimate the clock drift.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: May 28, 2019
    Assignee: THE MITRE CORPORATION
    Inventors: Ilya A. Udovydchenkov, Ballard J. Blair, Ralph A. Stephen
  • Patent number: 10277904
    Abstract: Video pixel line buffers are widely used for data processing in video codecs. Video data may be packed into buffers configured to store a plurality of words, each word comprising a series of bits. The video data may be associated with two or more channels. In order to reduce realization costs, data blocks from two different channels may be packed from opposite sides of a word in the buffer in opposite directions. In some embodiments, data blocks from two or more physical channels may be mapped to two or more virtual channels, the virtual channels having balanced data block sizes. The data blocks associated with the virtual channels may then be packed to one or more buffers.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: April 30, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Shu Lin, Mang Li, Kai Wang, Atul Garg
  • Patent number: 10277919
    Abstract: Described herein are techniques related to noise reduction for image sequences or videos. This Abstract is submitted with the understanding that it will not be used to interpret or limit the scope and meaning of the claims. A noise reduction tool includes a motion estimator configured to estimated motion in the video, a noise spectrum estimator configured to estimate noise in the video, a shot detector configured to trigger the noise estimation process, a noise spectrum validator configured to validate the estimated noise spectrum, and a noise reducer to reduce noise in the video using the estimated noise spectrum.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: April 30, 2019
    Assignee: GOOGLE LLC
    Inventors: Anil Kokaram, Damien Kelly, Andrew Joseph Crawford, Hugh Pierre Denman
  • Patent number: 10271065
    Abstract: For the purpose of providing an image encoding technique for reducing the amount of codes, in inter prediction in which motion search is performed by using a block obtained by dividing an input image and a reference image, the motion vector of the block is predicted by selecting from the motion vectors of the surrounding blocks. Further, in the method of calculating a differential vector and then performing encoding, the number or positions of candidate blocks from which a prediction vector is selected are changed block by block or frame by frame and thereby adaptive and efficient video image compression is performed.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: April 23, 2019
    Assignee: Maxell, Ltd.
    Inventors: Tomokazu Murakami, Toru Yokoyama
  • Patent number: 10264530
    Abstract: An embodiment of the present invention is directed to a method for partitioning an energy or power source. The energy source may be, for example, a battery or batteries or other power supply or power supplies for an electronic device, such as a cell phone, or mobile device. The energy source (battery for example), or power supply, provides power to a cell phone, or mobile device or any other load or power consuming device. Partitioning this energy source is a technique for controlling its operation so that power is provided to the power consuming device, such as a cell phone more efficiently, thereby extending the length of time the phone can be used between re-charging.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: April 16, 2019
    Assignee: ParkerVision, Inc
    Inventor: Gregory S. Rawlins
  • Patent number: 10237577
    Abstract: Disclosed is a prediction method adopting in-loop filtering. According to the present invention, a prediction method for encoding and decoding video comprises the following steps: generating a residual block of the current block through an inverse quantization and inverse transform; generating a prediction block of the current block through an intra-prediction; performing in-loop filtering on the current block in which the residual block and the prediction block are combined; and storing the current block, on which the in-loop filtering is performed, in a frame buffer for an intra-prediction of the next block to be encoded. As described above, prediction is performed using an in-loop filter during processes for encoding and decoding video, thereby improving the accuracy of prediction and reducing errors in prediction, thus improving the efficiency of video compression and reducing the amount of data to be transmitted.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: March 19, 2019
    Assignee: Intellectual Discovery Co., Ltd.
    Inventors: Je Chang Jeong, Ki Baek Kim, Dong Jin Jung
  • Patent number: 10229479
    Abstract: When performing noise removal of an image signal by applying the background art, there is a case where a filter coefficient that causes an edge constituting the image to become blurred against expectation due to the influence of noise in the image signal is set. The methods to solve this problem include a method for calculating a wide range of image feature values needed for correction of the filter coefficient, but this method has the problem that it requires a significant amount of calculation, thus increasing the calculation cost. To solve the above problem, the present invention is provided with an image signal input means, a wavelet transformation means, a first structure/texture separating means, a texture component degenerating means, a first combining means, an inverse wavelet transformation means, and a second structure/texture separating means. The present invention is further provided with a second texture component degenerating means, a second combining means, and an image signal output means.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: March 12, 2019
    Assignee: NEC CORPORATION
    Inventors: Kenta Senzaki, Masato Toda
  • Patent number: 10212007
    Abstract: A method and apparatus for equalization in a communication system. The method includes receiving an input of a block of symbols, filtering the input in the frequency domain, calculating an error factor in the time domain based on the filtered input, updating tap weights of the equalizer in the frequency domain using circular correlation based on the error factor and the conjugate of the input in the frequency domain, and outputting the filtered input.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: February 19, 2019
    Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: Kabiru Akande, Naveed Iqbal, Azzedine Zerguine, Abdelmalek Zidouri
  • Patent number: 10210600
    Abstract: A method of removing noise from image data output from an image sensor includes comparing a target block in the image data with each of at least one comparison blocks around the target block in the image data. A center pixel similarity between center pixels of the target block and each comparison block is calculated. A neighboring pixel similarity between neighboring pixels neighboring the center pixels in the target block and each comparison block is calculated. The method includes determining whether an impulsive noise exists in the center pixel of the target block based on the center pixel similarity and the neighboring pixel similarity. A weight applied to a value of the center pixel of each comparison block is adjusted based on a result of the determining. Weighted averaging is performed on values of the center pixels of the comparison blocks to estimate a value of the center pixel of the target block.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: February 19, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Byung-Joon Baek
  • Patent number: 10192477
    Abstract: A signal processing device and method for driving one or more light emitting diodes (“LEDs”) of a video screen, display panel, module or other component. The signal processing device and method can control one or more RGB LEDs and/or white LEDs to produce light with increased uniformity and brightness at a reduced cost and having reduced power consumption. The signal processing device and method can generate a matrix brightness value based on one or more input LED driving signals; generate a complementary brightness value based on the one or more input LED driving signals; generate an LED driving signal based on the matrix brightness value and complementary brightness value; and delaying the one or more input LED driving signals generate one or more delayed LED driving signals.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: January 29, 2019
    Assignees: Lighthouse Technologies Limited, Lighthouse Technologies (Huizhou) Limited
    Inventors: Kui Lai Curie Chan, Shinsaku Kikkawa
  • Patent number: 10169877
    Abstract: The present disclosure discloses methods and systems (for example multi-function devices) for segmenting multiple documents from a single input image. The multi-functional device includes a controller unit having a boundary extraction module to process an input image having multiple documents. The processing is performed using a computer implemented sum of absolute difference (SAD) based edge detection technique, to identify potential edge pixels and the region of interest pixels of the plurality of document images. Based on the identified potential edge pixels, perimeter boundaries surrounding each of the plurality of document images are determined. The determined perimeter boundaries and ROI pixels (Image mask for each document) in the input image are then segmented to create separate pages or files for each of the documents present within the input image for the purpose of printing separate files.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: January 1, 2019
    Assignee: XEROX CORPORATION
    Inventors: Mohan Palaniyappan, Sankaralingam Madasamy
  • Patent number: 10121254
    Abstract: Methods and systems described herein detect object boundaries of videos. A window around the pixel may be followed in adjacent image frames of the image frame to determine object boundaries. Inconsistencies in image patches over a temporal window are detected, and each pixel of the image frame of a video is assigned an object boundary probability. The pixel may belong to a texture edge if the window content does not change throughout the adjacent image frames, or the pixel may belong to an object boundary if the window content changes. A probability value indicating the likelihood of the pixel belonging to an object boundary is determined based on the window content change and is assigned to the corresponding pixel.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: November 6, 2018
    Assignee: Disney Enterprises, Inc.
    Inventors: Oliver Wang, Aljosa Smolic
  • Patent number: 10109254
    Abstract: A video processing circuit detects a boundary between a first pixel to which an application voltage which is a first voltage is applied, and a second pixel to which an application voltage which is a second voltage higher than the first voltage is applied, based on a video signal indicating a video which alternately switches a first video and a second video which is obtained by moving in parallel with the first video for each unit frame, corrects the application voltage such that a fringe electric field occurring at the boundary is decreased, when determining a boundary detected by the boundary detection unit in a kth unit frame does not exist in a (k?2)th unit frame, and the boundary is a boundary which is moved from a (k?1)th unit frame to the kth unit frame, and outputs the corrected video signal such that the liquid crystal panel is driven.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: October 23, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Kazuhisa Mizusako, Hiroyuki Hosaka
  • Patent number: 10091533
    Abstract: A target sample x(i,j) of a two-dimensional array of reconstructed samples is filtered based on values of samples in a neighboring region of the target sample to produce a two-dimensional array of modified reconstructed samples, according to the equation: y(i,j)=round (x(i, j)+g(?m,n?Ra(m, n)f(x(i,j)?b(m,n)x(m,n)))), where y(i,j) is a modified target sample value, R is the neighboring region of the target sample, a(m,n) and b(m,n) are real-valued coefficients, round(x) is a function that maps the value x to an integer value in the range [0,2B-1], B is the number of bits representing each sample of the two-dimensional array of modified reconstructed samples, f(x) and g(x) are functions, wherein (a) f(x) is a non-linear function, or (b) g(x) is a non-linear function and both a width and a height of R is more than one sample.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: October 2, 2018
    Assignee: Cisco Technology, Inc.
    Inventors: Arild Fuldseth, Steinar Midtskogen
  • Patent number: 10050666
    Abstract: Embodiments of the present invention include systems for determining locations of UWB transmitters. The system (100) includes multiple UWB receivers (104) for receiving a UWB signal (120) emitted by a UWB transmitter (106). Each receiver (104) includes: RF amplifiers (306) arranged in a cascade structure, the RF amplifiers (306) receive and amplify the UWB signal; multiple baseband blocks (308), each of the baseband blocks is coupled to the corresponding RF amplifier (306) and taps an output signal from the corresponding RF amplifier; and a processor (320) coupled to the multiple baseband blocks (308), the processor processes output signals from the multiple baseband blocks (308) to identify the UWB signal (120). The system (100) also includes a server (110) coupled to the multiple receivers (104), the server (110) receives the identified UWB signals from the multiple receivers (104) and determines the location of the UWB transmitter (106) using the identified UWB signals.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: August 14, 2018
    Assignee: Maxim Integrated Products, Inc.
    Inventor: Min Xie
  • Patent number: 10019215
    Abstract: A signal controlling method adapted for updating a display screen of a panel is disclosed. The signal controlling method includes the following steps: updating the display screen with first image data; determining whether second image data is received; when the second image data is not received, selectively generating an internal signal, using the internal signal to enable a shift register and returning to the step of updating the display screen with the first image data; and when an initiating signal and the second image data are received, enabling a plurality of shift register units of the shift register so that a plurality of scan signal lines of the panel are sequentially enabled and updating the display screen with the second image data.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: July 10, 2018
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Yu-Chieh Kuo, Hsiang-Pin Fan
  • Patent number: 9959597
    Abstract: A method of generating super resolution image data includes receiving original image data of a low resolution at an image processing device, performing motion compensation on the original image data using a current frame of image data and at least one previous frame of image data and at least one future frame of image data as reference frames, generating motion vectors, applying noise reduction to the current frame of image data and the reference frames to produce noise reduced, current frame image data, and generating a current frame of super resolution image data using the noise reduced, current frame image data.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: May 1, 2018
    Assignee: PIXELWORKS, INC.
    Inventors: Guodong Liu, Junhua Chen
  • Patent number: 9961343
    Abstract: A reconstructed block creating method is provided which includes decoding an intra prediction mode using an intra prediction mode group indicator and a prediction mode index, constructing a prediction block, inversely quantizing a received residual signal using a quantization parameter and adaptively inversely transforming the residual signal using the intra prediction mode to create a residual block, and adding the prediction block and the residual block to create a reconstructed block. The quantization parameter is reconstructed using a minimum quantization CU size, and the minimum quantization CU size is determined by a parameter transmitted from a picture parameter set. Therefore, it is possible to improve image quality by adaptively adjusting a quantization parameter of a current block depending on the size of a coding unit and enhance compression efficiency of an image by effectively encoding/decoding the quantization parameter.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: May 1, 2018
    Assignee: INFOBRIDGE PTE. LTD.
    Inventor: Shin Ji Park
  • Patent number: 9947114
    Abstract: An apparatus and methods for modifying gradation in an image frame determine a blend factor indicating a first weighting associated with a previously processed portion of the image frame. The apparatus and methods generate a weighted value associated with a current region of the image frame based on the current region of the image frame and based on applying the first weighting to the previously processed portion of the image frame so as to modify the gradation in the image frame.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: April 17, 2018
    Assignee: ATI Technologies ULC
    Inventors: Boris Ivanovic, Tiberiu Visan
  • Patent number: 9940026
    Abstract: The present disclosure is related to multidimensional contiguous memory allocation. Multidimensional contiguous memory allocation can include receiving an allocation request for an amount of memory that is contiguous in a multiple dimensions of the memory and determining whether the memory includes a region corresponding to the requested amount that is a candidate as being unallocated based on information indicating a maximum number of contiguous unallocated allocable portions of the memory. In response to determining that the memory includes the candidate region, the method can include determining whether the candidate region is unallocated based on a subset of information indicating whether each allocable portion of the memory is allocated. The subset of information corresponds to the candidate region only.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: April 10, 2018
    Assignee: Micron Technology, Inc.
    Inventors: John D. Leidel, Kevin Wadleigh
  • Patent number: 9923646
    Abstract: A combination low-pass filter and a method for reducing bandwidth of an input signal comprises filtering an input signal in parallel with a first type of low-pass filter to produce a first filtered signal having the first type of artifacts, and a second low-pass filter to produce a second filtered signal that does not include the first type of artifacts. Responsive to detecting no significant transition in the input signal, the first filtered signal is output. And responsive to detecting a significant transition in the input signal, portions of the first filtered signal are selectively replaced with portions of the second filtered signal by switching outputs from the first filtered signal to the second filtered signal in transition zones occurring immediately before and immediately after the detected transition in the input signal, wherein the transition zones overlap duration of the first type of artifacts caused by the first filter.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: March 20, 2018
    Inventor: Yves Faroudja
  • Patent number: 9916521
    Abstract: A feature point is extracted from an input image including an image region for which depth values of pixels change consecutively. A transformation that normalizes depth values of pixels of a vicinity of the feature point with respect to a region of at least a portion of the input image is set as a normalization transformation, and an image for a feature amount calculation is generated by performing the normalization transformation on a pixel position of the feature point. A feature amount is calculated from the image for the feature amount calculation.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: March 13, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Masahiro Matsushita, Hirotaka Shiiyama, Hideki Sorakado
  • Patent number: 9917656
    Abstract: A device to cancel noise in broadcast signal is disclosed. The device a first port to connect to a main antenna, a second port to connect to a noise antenna, a processor coupled to the first port and the second port to measure the broadcast signal received at the first port and a noise signal received at the second port to derive a first set of coefficients, a first adaptive filter coupled to the first port and the processor and a second adaptive filter coupled to the second port and the processor. The first adaptive filter and the second adaptive filters are configurable based on the first set of coefficients to remove the high energy parts of a frequency spectrum of signals received at the first port and the second ports respectively.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: March 13, 2018
    Assignee: NXP B.V.
    Inventors: Hendrik van der Ploeg, Erik Keukens
  • Patent number: 9883079
    Abstract: A method for applying filters to digital images with minimal amplification of image noise, comprising filtering the digital image with an EPDR edge-preserving detail-reducing filter, determining a matrix from the filtered image as a result of one or more structure adaptive functions, and modifying the digital image using the filter, adjusted by the matrix values, to produce an enhanced digital image. The order of processing may be inverted, by first determining the matrix and then filtering the matrix with the edge-preserving detail-reducing filter.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: January 30, 2018
    Assignee: Google LLC
    Inventor: Nils Kokemohr
  • Patent number: 9860428
    Abstract: The present invention discloses a signal correction method and apparatus, and a terminal, and relates to the signal processing field. The method includes: receiving an input signal, where the input signal is an audio signal or an image signal, the input signal includes signals that are corresponding to multiple units respectively, and any one of the units is a sampling point of the audio signal or a pixel unit of the image signal; performing texture detection on a target unit to obtain a first signal; extracting a high frequency component of a signal of the target unit to obtain a second signal; performing multiplication processing and non-linear processing on the first signal and the second signal to obtain a sharpness correction signal of the target unit; and performing sharpness correction on the signal of the target unit according to the sharpness correction signal.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: January 2, 2018
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventor: Yuan Ji
  • Patent number: 9854217
    Abstract: A mobile terminal configured to process images, the mobile terminal comprising: a camera configured to capture images; an image sensor configured to acquire an image signal of an object in an image captured via the camera; an infrared sensor configured to detect an infrared signal reflected from the object; a controller configured to utilize the image sensor to: determine whether flicker is generated; and detect information related to a light source contributing to the generated flicker based on the detected infrared signal; and an image processor configured to perform white balance of the acquired image, the white balance performed based on the detected information if flicker is generated, and provides an effective white balancing method according to types of peripheral light sources through flicker analysis based on the image sensor and the infrared sensor.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: December 26, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Kyunghee Kang, Jinsool Lee, Seonyung Kim
  • Patent number: 9807284
    Abstract: Methods and systems are provided for noise suppression in data, particularly data comprising video and/or audio data. An input adjustment, based on a corresponding input adjustment value, may be applied to received input data that comprises video and/or audio data; and an output adjustment, based on a corresponding output adjustment value, may be applied to output data corresponding to previously processed received input data. The input adjustment value may be re-calculated based on an outcome of applying the input adjustment to the received data, and when a change occurs in the input adjustment value the change in the input adjustment value may be applied to subsequent received input data, and at the same time, and based on the change in the input adjustment value, a corresponding change may be applied at least some of data corresponding to previously processed received input data.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: October 31, 2017
    Inventors: Matthias Vierthaler, Florian Pfister, Dieter Luecking
  • Patent number: 9807339
    Abstract: A system for the conversion of video from one frame rate to a different frame rate. The system includes the application of graphical element and text detection and processing in frame rate up conversion.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: October 31, 2017
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Xu Chen, Petrus J. L. Van Beek