Lowpass Filter (i.e., For Blurring Or Smoothing) Patents (Class 382/264)
  • Publication number: 20140294318
    Abstract: The embodiments provide an image processing method and apparatus, which combine a wavelet transform method with a non-local means method, comprising: performing N-level decomposition of an original gray image by using a wavelet transform method; and performing non-local means processing and wavelet reconstruction of each level of components one by one starting from an N-th level, so as to obtain a processed gray image. The image processing method and apparatus can effectively remove various image noises, and well reserve the image details.
    Type: Application
    Filed: March 28, 2014
    Publication date: October 2, 2014
    Applicant: Fujitsu Limited
    Inventors: Jianrong Wu, Xuan Fu, Zheng Wang, Akihiro Higashi
  • Patent number: 8848044
    Abstract: This invention is to provide an image processing apparatus, an image processing method, a program, and a display in which both of a secret image and a public image can be efficiently displayed with high picture quality without reducing contrast of the public image. One of output images is a secret image which displays an input secret image as one of input images in a partial area of a screen, all the output images including the secret image have a relationship to become, when a luminance value of each pixel thereof is totaled, an input public image as one of the input images; and during a period in which at least the secret image is being outputted, shutter glasses disposed between a display to which the image signals are inputted and user's eyes are set to a light transmission state.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: September 30, 2014
    Assignee: Nec Corporation
    Inventors: Daigo Miyasaka, Masao Imai, Fujio Okumura
  • Patent number: 8842184
    Abstract: Accurately estimating the image quality of video is still difficult, especially when there is no reference video available. A method for determining a quality measure for a video image comprises selecting a measuring point, such as a MB, determining a context area around the measuring point, calculating a variance of pixel values in the context area, calculating a variance of pixel values in the measuring point, calculating a relation between the two variances of pixel values, and averaging said relations for a plurality of measuring points, wherein a quality measure for a video image is obtained.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: September 23, 2014
    Assignee: Thomson Licensing
    Inventors: De Bing Liu, Zhi Bo Chen, Xiao Dong Gu
  • Patent number: 8842930
    Abstract: An image processing device includes: a first band limiting unit that reduces noise included in an input image; and a restoring unit, wherein the restoring unit has a difference calculating unit that calculates a difference between the input image and a noise-reduced image, a predicted noise obtaining unit that obtains a predicted noise amount to be included in the input image, a correction signal generating unit that generates a correction signal for correcting the noise-reduced image and controlling an absolute value of the difference between the input image and the noise-reduced image within a range of the predicted noise amount, and an image synthesizing unit that corrects the noise-reduced image based on the correction signal.
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: September 23, 2014
    Assignee: Panasonic Corporation
    Inventors: Khang Nguyen, Yusuke Monobe
  • Publication number: 20140270567
    Abstract: An automated, computerized method for processing a video is provided. The method includes providing a video file depicting a video, in a computer memory; providing a video file depicting a video, in a computer memory; scale separating the video file by applying an edge-preserving blurring filter to generate a detail scale-separated video and a level scale-separated video corresponding to the video; temporally blurring the detail scale-separated video and spatially blurring the level scale-separated video; combining the filtered detailed scale-separated video and the filtered level scale-separated video to provide an output video; and outputting the output video for use in a data compression operation.
    Type: Application
    Filed: January 29, 2014
    Publication date: September 18, 2014
    Applicant: Tandent Vision Science, Inc.
    Inventors: Casey Arthur SMITH, Iain Richardson, Abharana Ramdas Bhat
  • Publication number: 20140270568
    Abstract: A system and method of image processing is provided, including implementing adaptive pixel replacement techniques or reducing noise. The method includes obtaining a data map of an image frame, wherein the data map comprises good pixels and bad pixels at locations associated with the data map. The method also includes assigning different techniques to the bad pixels, wherein a first technique is assigned to a first bad pixel and a second technique is assigned to a second bad pixel. The method further includes adjusting information associated with the bad pixels for a chosen technique for each of the bad pixels.
    Type: Application
    Filed: March 13, 2014
    Publication date: September 18, 2014
    Inventors: David C. Hutchison, Douglas A. Blettner, Henry W. Neal, Alfredo Mendez, JR.
  • Patent number: 8836681
    Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for reducing artifacts in an image generated by a display device. In one aspect, data is written to a display and a position of display elements is maintained based on the application of a bias voltage pattern. The bias voltage pattern includes alternating polarities along one dimension in a pattern having a first frequency spectrum, and alternating polarities along a second dimension in a pattern having a second frequency spectrum that is different than the first frequency spectrum. At least one of the first and second frequency spectrums may include a plurality of frequency components.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: September 16, 2014
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventors: Manu Parmar, Jeho Lee, Nao S. Chuei, Koorosh Aflatooni
  • Patent number: 8831348
    Abstract: Systems and methods are provided for providing a navigation interface to access or otherwise use image content items. In one embodiment, an image manipulation application identifies at least one offset curve corresponding to at least one base curve. The offset curve may identify an offset curve corresponding to the outer boundary of a feathered region for an image mask. The image manipulation application identifies multiple line segments identifying the offset curve. Each line segment connects a sampled point along the path of the base curve to a corresponding point along the path of the offset curve. The image manipulation application determines that the offset curve includes a retrograde region based on analyzing the line segments. The image manipulation application modifies the at least one offset curve to eliminate at least some of the retrograde region by applying a radius-modulating filter to one or more of the line segments.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: September 9, 2014
    Assignee: Adobe Systems Incorporated
    Inventors: Daniel M. Wilk, David Paul Simons, Jovan Popovic
  • Patent number: 8830395
    Abstract: Systems and methods are provided for upscaling a digital image. A digital image to be upscaled is accessed, where the digital image comprises a plurality of pixel values. A first half pixel value is computed for a first point in the digital image based on a plurality of pixel values of the digital image surrounding the first point and an activity level. A second half pixel value is computed for a second point in the digital image, and an interpolated pixel of an upscaled version of the digital image is determined using a plurality of the pixel values, the first half pixel value, and the second half pixel value.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: September 9, 2014
    Assignee: Marvell World Trade Ltd.
    Inventors: Yun Gong, Dam Le Quang
  • Patent number: 8831325
    Abstract: A radiographic image processing apparatus in this invention decreases a spatial resolution twice in total by a low-frequency image generating device and a low-frequency characteristic generating device. Thereby an influence such as noise and thus calculation amounts are decreased. Moreover, excessive characteristic amounts (patterns) not removed among characteristic amounts extracted through the low-frequency image generating device and a characteristic extracting device can be decreased by decrease of the spatial resolution by the low-frequency characteristic generating device. Consequently, influence such as noise and calculation amounts can be decreased for the low-frequency characteristics generated by the low-frequency characteristic generating device and a radiation area extracted by an area extracting device on the latter stage.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: September 9, 2014
    Assignee: Shimadzu Corporation
    Inventor: Yoshinori Ohno
  • Patent number: 8824832
    Abstract: An image processing apparatus includes an image reducing section generating at least one reduced image by generating a reduced pixel with reference to pixel values by each predetermined area of a target image being a process object, a noise extracting section extracting a noise component at a frequency band according to a reduction ratio of the reduced image for each reduced pixel based on the reduced image, a noise subtraction section subtracting the noise component of the reduced pixel from each of pixels at the predetermined area being referred to generate the reduced pixel, and an area smoothing section smoothing the pixels with each other at the predetermined area being referred to generate the reduced pixel based on the noise component of the reduced pixel.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: September 2, 2014
    Assignee: Nikon Corporation
    Inventor: Akihiko Utsugi
  • Patent number: 8823746
    Abstract: A system and method for applying motion blur to an application window. Motion blur may be applied to pixel in a window by calculating a velocity vector for each pixel in the window with reference to velocity vectors calculated for each corner of the window. Motion blur may be implemented by placing a number of blur samples in a frame along the pixel velocity vector according to the size of the pixel vector, or by directionally downsampling then re-upsampling the content of the window. For a frame having multiple windows, the motion blur for each window may be determined independent of the motion of other windows or as a composite for windows moving together. According to an embodiment, for each pixel in the frame, the associated application window may be identified and the pixel blurred with reference to the corner velocities of the associated application window.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: September 2, 2014
    Assignee: Apple Inc.
    Inventors: Chad E. Jones, Assana M. Fard, Christopher Wright
  • Patent number: 8824826
    Abstract: A method for performing fast detail-preserving filtering of an input digital image includes, for each pixel in the image, calculating the difference between the selected pixel and each of its four neighboring pixels located above, left, right, and below the selected pixel, calculating a scaled weighted sum of differences between the actual pixel and its four neighbors, where for each neighboring pixel the weight is an edge-sensing function having a data-adaptive scaling parameter function, and adding the weighted sum of differences to the value of the selected pixel.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: September 2, 2014
    Assignee: Foveon, Inc.
    Inventor: Rastislav Lukac
  • Publication number: 20140240555
    Abstract: A noise elimination device includes a low pass filter unit, a noise filtering unit and a signal synthesis unit. The low pass filter unit generates a low frequency image signal by separating low frequency elements from an input image signal. The noise filtering unit generates a filtered image signal by suppressing noise in the low frequency image signal in horizontal and vertical directions. The signal synthesis unit generates an output image signal by combining the high frequency image signal and the filtered image signal.
    Type: Application
    Filed: February 27, 2013
    Publication date: August 28, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Eugene FAINSTAIN, Evgeny ARTYOMOV
  • Publication number: 20140241646
    Abstract: A system for enhancing an input image including receiving an input image and filtering the input image with a plurality of non-linear smoothing filters providing a respective plurality of filtered outputs. The system processes a plurality of the filtered outputs with respect to at least one of another of the filtered outputs and the input image to determine a plurality of detail layers. The system filters the plurality of detail layers with a plurality of non-linear smoothing filters providing a respective plurality of smoothed layers. The system adjusts the plurality of smoothed layers in such a manner that regions closer to an edge are enhanced to a lesser extent than regions farther from an edge and combining the adjusted the smoothed layers to provide an enhanced output image.
    Type: Application
    Filed: February 27, 2013
    Publication date: August 28, 2014
    Applicant: SHARP LABORATORIES OF AMERICA, INC.
    Inventors: Hae-Jong SEO, Christopher A. SEGALL
  • Publication number: 20140226915
    Abstract: An image processing device (21) is provided with: a noise suppression processor (23) for creating a noise-reduced image (NRs) by executing spatial filtering on a plurality of pixels, which fall within a reference range that includes a pixel of interest, in an input image (Is); and a distortion correction processor (24) for correcting distortion by local stretching or shrinking by a magnification factor (R) corresponding to the local amount of distortion in the noise-reduced image (NRs). The reference range is dynamically changed in accordance with the magnification factor (R). Control is performed so that the reference range becomes narrower as the magnification factor (R) increases.
    Type: Application
    Filed: February 17, 2012
    Publication date: August 14, 2014
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takeo Fujita, Daisuke Suzuki, Narihiro Matoba
  • Patent number: 8805111
    Abstract: A system and method for generating a fused image is provided. The system comprises processing circuitry configured to receive a plurality of images, filter each received image using an edge preserving filter, compute a weight for each received image based on the corresponding filtered image and the received image and generate a fused image based on the weights of each received image. The system further comprises a memory device configured to store the fused image.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: August 12, 2014
    Assignee: Indian Institute of Technology Bombay
    Inventors: Subhasis Chaudhuri, Ketan Kotwal, Shanmuganathan Raman
  • Patent number: 8805112
    Abstract: A method for predicting whether a test image (318) is sharp or blurred includes the steps of: providing a sharpness classifier (316) that is trained to discriminate between sharp and blurred images; computing a set of sharpness features (322) for the test image (318) by (i) generating a high pass image (404) from the test image (318), (ii) generating a band pass image (406) from the test image (318), (iii) identifying textured regions (408) in the high pass image, (iv) identifying texture regions (410) in the band pass image, and (v) evaluating the identified textured regions in the high pass image and the band pass image to compute the set of test sharpness features (412); and evaluating the sharpness features using the sharpness classifier (324) to estimate if the test image (318) is sharp or blurry (20).
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: August 12, 2014
    Assignee: Nikon Corporation
    Inventor: Li Hong
  • Publication number: 20140219050
    Abstract: A method of processing an image, including estimating a point spread function (PSF) of an acquired image, and performing image restoration on the acquired image using the estimated PSF based on a generalized Gaussian model using inverse filter frequency domain so as to perform image restoration at high speed and to prevent a halo effect. The method provides high speed processing while preventing a halo effect. The apparatus includes an ultrasonic imaging apparatus including: an ultrasonic probe to irradiate an object with ultrasonic waves and to receive ultrasonic echo waves reflected from the object; a beamformer configured to perform beam forming based on the ultrasonic echo waves received by the ultrasonic probe; an image restorer configured to restore the image beam formed by the beamformer based on a generalized Gaussian model; and an postprocessor configured to suppress noise and aliasing which are produced in the process of restoring the image.
    Type: Application
    Filed: February 6, 2014
    Publication date: August 7, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung Chan PARK, Joo Young KANG, Kyu Hong KIM, Jung Ho KIM, Su Hyun PARK
  • Publication number: 20140219578
    Abstract: An image processing method is provided and includes the following steps. A source image arranged in a Bayer pattern is captured. A first-order image process is performed on the source image to produce a first image in YCbCr format. A second-order image process is performed on the source image to produce a second image in YCbCr format. Then, a noise-reducing process is performed on the first image in YCbCr format to produce a noise-reduced image. A blending operation is performed on luminance image of the noise-reduced image and luminance image of the second image in YCbCr format, and thereafter a chrominance image is combined with the blended image to produce a processed image. A noise reducing degree of the noise-reduced image is higher than that of the second image in YCbCr format.
    Type: Application
    Filed: May 30, 2013
    Publication date: August 7, 2014
    Inventors: Shih-Yuan Peng, Shan-Lung Chao, Hong-Long Chou
  • Patent number: 8798388
    Abstract: An apparatus is described. The apparatus includes a digital camera that is capable of shooting at least two images at different effective lens focal lengths. The camera is also capable of high pass filtering (HP) said at least two images, estimating respective spectral densities (SD) of said at least two filtered images and then low pass filtering (LP) the respective estimates of said at least two filtered images prior to combining said at least two images into a single image to produce one or more optical effects.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: August 5, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Kalin M. Atanassov, Hau Hwang, Hsiang-Tsun Li
  • Patent number: 8798390
    Abstract: An image processing apparatus including: an error determination processing unit inputting a distance image having distance information or parallax information up to the subject, detecting an error signal included in the distance image, and outputting a synthesis coefficient according to an error degree of an image region unit; a low pass filter processing unit applying a low pass filter with respect to the distance image and generating a noise reduction distance image; and a distance image synthesis unit generating a corrected distance image using a synthesis process of the distance image and the noise reduction distance image, in which, the distance image synthesis unit follows a synthesis coefficient of an image region unit output by the error determination processing unit, performs synthesis processing in which the synthesis ratio of the distance image and the noise reduction image is set in the image region units, and generates the corrected distance image.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: August 5, 2014
    Assignee: Sony Corporation
    Inventor: Toshio Yamazaki
  • Publication number: 20140212032
    Abstract: An image processing apparatus includes an extraction section that extracts a first high brightness region from a source image where brightness is a first threshold value or greater, a mask generation section that performs blur processing and binarization processing on the first high brightness region and generates a mask containing the first high brightness region, a mask application section that based on the mask performs elimination processing, thinning processing, or both on the first high brightness region, a bright line generation section that generates a bright line based on a second high brightness region contained in output of the mask application section, and a synthesizing section that synthesizes the bright line onto the source image.
    Type: Application
    Filed: November 20, 2013
    Publication date: July 31, 2014
    Applicant: FUJITSU SEMICONDUCTOR LIMITED
    Inventors: Daisuke Maruta, Senshu Igarashi, Yuji Umezu
  • Publication number: 20140212063
    Abstract: The invention relates to a method for noise suppression in images of an image sequence. It is an object of the invention to find how an iteratively better adapted noise suppression can be ensured for images of an image sequence, in particular given a rising number of images. According to the invention, this object is achieved by a method for noise suppression which provides a low-pass filter algorithm: Pi,jn+1=?i,jn+1*Pi,jn+(1??i,jn+1)*Qi,jn+1 with an attenuation function ?i,jn+1=?i,jn+1(?0i,jn+1,?i,jn+1).
    Type: Application
    Filed: September 7, 2012
    Publication date: July 31, 2014
    Applicant: JENOPTIK OPTICAL SYSTEM GMBH
    Inventor: Burkhard Hahn
  • Patent number: 8781245
    Abstract: Video sequence processing is described with various filtering rules applied to extract dominant features for content based video sequence identification. Active regions are determined in video frames of a video sequence. Video frames are selected in response to temporal statistical characteristics of the determined active regions. A two pass analysis is used to detect a set of initial interest points and interest regions in the selected video frames to reduce the effective area of images that are refined by complex filters that provide accurate region characterizations resistant to image distortion for identification of the video frames in the video sequence. Extracted features and descriptors are robust with respect to image scaling, aspect ratio change, rotation, camera viewpoint change, illumination and contrast change, video compression/decompression artifacts and noise.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: July 15, 2014
    Assignee: Zeitera, LLC
    Inventors: Mihailo M. Stojancic, Prashant Ramanathan, Peter Wendt, Jose Pio Pereira
  • Patent number: 8781250
    Abstract: Described are techniques for image deconvolution to deblur an image given a blur kernel. Localized color statistics derived from the image to be deblurred serve as a prior constraint during deconvolution. A pixel's color is formulated as a linear combination of the two most prevalent colors within a neighborhood of the pixel. This may be repeated for many or all pixels in an image. The linear combinations of the pixels serve as a two-color prior for deconvolving the blurred image. The two-color prior is responsive to the content of the image and it may decouple edge sharpness from edge strength.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: July 15, 2014
    Assignee: Microsoft Corporation
    Inventors: Charles Lawrence Zitnick, Neel Joshi, Richard Szeliski
  • Patent number: 8781248
    Abstract: The appearance of image details can be preserved and/or enhanced by applying contrast adaptive gain to the high spatial frequency component of the luminance information. The image details in bright and/or dark regions can be further boosted by applying a local mean adaptive gain. The contrast transfer mapping curve for luminance contrast enhancement can be re-scaled to account for the applied gain. The re-scaling may be performed from frame to frame of displayed video. The re-scaling may be temporally controlled for subsequent frames to make the re-scaling change gradually to prevent flickering.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: July 15, 2014
    Assignee: STMicroelectronics Asia Pacific Pte. Ltd.
    Inventors: Haiyun Wang, Lucas Hui
  • Publication number: 20140193094
    Abstract: Aspects of an edge smoothing block filter and combinations of the filter with a motion compensated temporal filter are described. In one embodiment, edge smoothing block filtering includes selecting a current pixel to be filtered and selecting a candidate pixel within a search area about the current pixel. The edge smoothing block filtering generally seeks to identify candidate pixels having surrounding pixels similar to pixels surrounding the current pixel. The edge smoothing block filtering further computes a cost difference between pixels within a candidate pixel neighborhood and pixels within a current pixel neighborhood, and filters the current pixel based on the cost difference. Aspects of the filters and filter element combinations may preserve edges and textures adaptively based on image content. For example, diagonal or curved image edges may be filtered along edges while texture is preserved along the edges.
    Type: Application
    Filed: February 7, 2013
    Publication date: July 10, 2014
    Applicant: BROADCOM CORPORATION
    Inventors: Jaewon Shin, Brian Schoner
  • Patent number: 8774547
    Abstract: A contour correcting device which includes a plurality of delay elements which delay an input video signal, a pixel-selection-control-signal generation circuit, a pixel selection circuit which selects outputs of the plurality of delay elements in response to outputs of the pixel-selection-control-signal generation circuit, a high-pass filter operation circuit and an adder circuit which adds an operation result of the high-pass filter operation circuit to the input video signal. When the pixel selection circuit extracts a contour component in a boundary portion between a horizontal video effective period and a period other than the horizontal video effective period of the input video signal, the pixel selection circuit replaces pixel data in the period other than the horizontal video effective period among pixel data input to the high-pass filter operation circuit, with pixel data at an edge-point of the horizontal video effective period.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: July 8, 2014
    Assignee: Panasonic Corporation
    Inventors: Nobuko Fujita, Satoru Tanigawa
  • Publication number: 20140185954
    Abstract: A method for matching social network participants includes receiving activity data pertaining to a plurality of participants in a social network. The activity data is parsed to generate activity pattern summaries for each of the participants. The participants are clustered into a plurality of groups according to the activity pattern summaries. At least one participant of influence is determined within at least one group according to the activity data. A social connection is established within the social network between the determined participant of influence and at least one other participant clustered into the same group.
    Type: Application
    Filed: December 28, 2012
    Publication date: July 3, 2014
    Applicants: Industrial Technology Research Institute, International Business Machines Corporation
    Inventors: Mark JH Hsiao, Yue-Min Jiang, June-Ray Lin, Alfred SH Tzao, Xinxin Zhu
  • Patent number: 8768093
    Abstract: The present invention relates to a method and apparatus for reducing noise. A method of reducing noise according to an aspect of the present invention includes calculating a noise level of a reference pixel forming an input image, determining a weighted value to be allocated to the reference pixel based on similarity of a reference window including the reference pixel with respect to at least one comparative window existing in a comparative region of the input image and having the same size as the reference window, and the calculated noise level of the reference pixel, and filtering the input image using the determined weighted value.
    Type: Grant
    Filed: September 10, 2007
    Date of Patent: July 1, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Jin Yoo, Won-Hee Choe, Seong-Deok Lee
  • Publication number: 20140176548
    Abstract: A facial image enhancement system includes a deformable face tracker that provides a tracked face model from a facial video stream. Additionally, the facial image enhancement system includes a face enhancement image processing engine that uses the tracked face model to process the facial video stream, wherein an image enhancement of the facial video stream provides an enhanced facial video stream. A facial image enhancement method is also provided.
    Type: Application
    Filed: December 21, 2012
    Publication date: June 26, 2014
    Applicant: NVIDIA CORPORATION
    Inventor: Simon Green
  • Patent number: 8761537
    Abstract: In at least one embodiment of the invention, an apparatus for adaptive edge enhancement of a video signal includes a transient improvement module. The transient improvement module is configured to generate a first adjusted pixel value based on a window of pixel values for pixels surrounding a pixel-of-interest initially having an input pixel value. The apparatus includes an adaptive peaking module configured to generate a second adjusted pixel value based on the first adjusted pixel value and the input pixel value. In at least one embodiment of the apparatus, the adaptive peaking module comprises a high-pass filter configured to generate a pixel adjustment based on the first adjusted pixel value. In at least one embodiment of the apparatus, the adaptive peaking module further comprises a gain path configured to apply at least one adaptive gain value to the pixel adjustment to generate an adaptive adjustment value.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: June 24, 2014
    Assignee: ViXS Systems, Inc.
    Inventor: Bradley Arthur Wallace
  • Patent number: 8761536
    Abstract: An image processing apparatus includes a thinning processing unit which performs thinning processing on image data and a smoothing processing unit which performs smoothing processing on the image data. The image processing apparatus further includes an edge direction determination unit which determines an edge direction with respect to each pixel of the image data, a blending processing unit which decides a pixel value of a target pixel of when the smoothing processing and the thinning processing are realized at the same time, and a thinning adjustment unit which determines whether a thinned pixel becomes isolated, and the thinning adjustment unit resets the change amount in pixel value due to the thinning processing of the thinned pixel to a value of zero, if the thinned pixel is determined to be isolated.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: June 24, 2014
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventor: Koji Washio
  • Publication number: 20140168249
    Abstract: Methods and apparatus according to various aspects take as input image data in a lower-dynamic-range (LDR) format and produce as output enhanced image data having a dynamic range greater than that of the input image data (i.e. higher-dynamic range (HDR) image data). In some embodiments, the methods are applied to video data and are performed in real-time (i.e. processing of video frames to enhance the dynamic range of the video frames is completed at least on average at the frame rate of the video signal).
    Type: Application
    Filed: February 20, 2014
    Publication date: June 19, 2014
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Allan G. REMPEL, Wolfgang HEIDRICH, Helge SEETZEN, Gregory John WARD, Lorne A. WHITEHEAD
  • Patent number: 8755614
    Abstract: A method of processing an image includes the steps of receiving selection of the first region of interest (ROI) of an image, processing the first image data related to the first ROI, displaying the first image ROI based on the first image data, receiving selection of the second ROI of the image, which at least partially overlapping the first ROI, processing the second image data related to a portion of the second ROI that does not overlap the first ROI, combining the processed second image data with the processed first image data that overlaps the second ROI, and displaying the second image ROI based on the combined processed second image data and the processed first data.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: June 17, 2014
    Assignee: Marvell International Ltd.
    Inventor: Ke Ding
  • Patent number: 8750642
    Abstract: This document discloses, among other things, a method for removing a bullseye artifact from a radial image generated using magnetic resonance and using a swept frequency pulse.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: June 10, 2014
    Assignee: Regents of the University of Minnesota
    Inventors: Curtis A. Corum, Djaudat S. Idiyatullin, Steen Moeller, Michael G. Garwood
  • Publication number: 20140153842
    Abstract: In the field of medical imaging using fluoroscopy, a method for reducing noise in a sequence of fluoroscopic images acquired by an X-ray detector comprises for each image (xn) of the sequence: applying temporal filtering to the image (xn) at instant n, the temporal filtering comprising fluoroscopic noise reduction processing; applying spatial filtering to the image (yn) at instant n, the spatial filtering comprising: transforming the image (yn) acquired at the instant n from the spatial domain into the curvelet domain using a curvelet transform, each transformed image being represented by a set of coefficients, thresholding the coefficients of the image (yn) using a thresholding function, the thresholding function cancelling the coefficients below a third predetermined threshold, and preserving or adjusting the coefficients above the third predetermined threshold, transforming the image (zn) whose coefficients have been thresholded from the curvelet domain into the spatial domain using an inverse curvelet tra
    Type: Application
    Filed: July 20, 2012
    Publication date: June 5, 2014
    Applicant: THALES
    Inventors: Jérémie Pescatore, Carole Amiot
  • Patent number: 8743245
    Abstract: An image processing method includes the steps of obtaining an input image that is an image in which information of an object space is obtained from a plurality of points of view using an image pickup apparatus that includes an image pickup element having a plurality of pixels and an imaging optical system, calculating a first position of a virtual imaging plane that corresponds to a specified focus position, setting the virtual imaging plane to a second position that is in a range of a depth of focus of the imaging optical system with reference to the first position so that a maximum value of an apparent pixel pitch that is formed by reconstructing the input image is decreased, and generating an output image in a state where the virtual imaging plane is set to the second position.
    Type: Grant
    Filed: August 15, 2012
    Date of Patent: June 3, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Norihito Hiasa, Koshi Hatakeyama
  • Patent number: 8744206
    Abstract: Provided is an image processing apparatus including an infinite impulse response (IIR) mean value calculation section for calculating a mean value of signal values of reference pixels around a correction target pixel according to an IIR filter application process, an IIR variance value calculation section for calculating a variance value of the signal values of the reference pixels around the correction target pixel according to the IIR filter application process, an edge-preserving smoothing processing section for receiving the mean and variance values of the reference pixels and executing an edge-preserving smoothing process to which the mean and variance values are applied, and an IIR filter coefficient calculation section for updating an IIR filter coefficient to be applied to the IIR mean value calculation section and the IIR variance value calculation section according to a signal value of a pixel constituting an image.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: June 3, 2014
    Assignee: Sony Corporation
    Inventors: Yoshikuni Nomura, Masayuki Tachi
  • Patent number: 8737760
    Abstract: An image processing method and to an arrangement for implementing the method. The method includes filtering the original image with a low-pass filter for forming a low-pass filtered image, creating a high-pass filtered image by subtracting the low-pass filtered image from the original image, forming intermediate values from the created high-pass filtered image based on column-wise selection of pixel values in the suppression of column noise and row-wise selection of pixel values in the suppression of row noise, and subtracting formed intermediate values column-by-column and row-by-row from the original image. The arrangement includes a non-linear, one-dimensional digital finite impulse response filter, a computing unit for column-wise or row-wise formation of intermediate values, an image storage unit and a subtraction unit.
    Type: Grant
    Filed: April 19, 2010
    Date of Patent: May 27, 2014
    Assignee: Flir Systems AB
    Inventors: Stefan Olsson, Emanuel Johansson
  • Patent number: 8737761
    Abstract: A method for restoring and enhancing a space based image of point or spot objects. The method includes: 1) dividing a space-variable degraded image into multiple space-invariant image sub-blocks, and constructing a point spread function for each of the image sub-blocks; 2) correcting each of the image sub-blocks via a space-invariant image correction method whereby obtaining a corrected image {circumflex over (f)}i for each of the image sub-blocks; and 3) stitching the corrected image sub-blocks {circumflex over (f)}i altogether via a stitching algorithm whereby obtaining a complete corrected image {circumflex over (f)}.
    Type: Grant
    Filed: December 30, 2012
    Date of Patent: May 27, 2014
    Assignee: Huazhong University of Science and Technology
    Inventors: Tianxu Zhang, Daolong Wu, Jianchong Chen, Jing Guan, Zheng Yu, Hao Chen, Zhiyong Zuo, Putao Zhang
  • Patent number: 8737759
    Abstract: Systems and methods of blurring images may involve partitioning at least a portion of a non-separable finite impulse response (FIR) filter into a plurality of constant response sub-filters, wherein each constant response sub-filter has a rectangular aperture. In addition, the plurality of constant response sub-filters may be used to blur an image. In one example, the non-separable FIR filter may optionally be partitioned into one or more satellite sub-filters, wherein the one or more satellite sub-filters are also used to blur the image.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: May 27, 2014
    Assignee: Intel Corporation
    Inventor: Albert Golembiowski
  • Patent number: 8737758
    Abstract: An apparatus of reducing noise includes: an edge determining module determining whether each pixel of an image corresponds to an edge; a low pass filter module performing low pass filtering of the image in two directions and performing low pass filtering only for the pixel determined not to be the edge; a filter selecting module selecting a filter having a flexible size to be applied to a mask region for each of the images low pass filtered based on the average brightness of the entire region and the average brightness of the mask region having a predetermined size; a sigma filter module sigma filtering the mask region using the selected filter for each of the images low pass filtered; and an averaging module averaging the image sigma filtered in the two directions.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: May 27, 2014
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Gyu Won Kim, Ho Seop Jeong, In Taek Song, Kyoung Joong Min, Tae Hyeon Kwon
  • Publication number: 20140140634
    Abstract: A radiation imaging apparatus includes a radiation imaging unit configured to capture a radiation image of a subject, a wireless communication unit configured to perform wireless communication with an external apparatus, a wireless reception characteristics obtaining unit configured to obtain a wireless reception characteristic of the wireless communication unit, an estimation unit configured to estimate an amount of noise included in the radiation image on the basis of a characteristic value of the wireless reception characteristic, and a correction unit configured to correct the noise included in the radiation image on the basis of the amount of noise estimated by the estimation unit.
    Type: Application
    Filed: November 20, 2013
    Publication date: May 22, 2014
    Inventor: Shinsuke Hayashida
  • Publication number: 20140133775
    Abstract: Systems and methods are provided for providing improved de-noising image content by using directional noise filters to accurately estimate a blur kernel from a noisy blurry image. In one embodiment, an image manipulation application applies multiple directional noise filters to an input image to generate multiple filtered images. Each of the directional noise filters has a different orientation with respect to the input image. The image manipulation application determines multiple two-dimensional blur kernels from the respective filtered images. The image manipulation application generates a two-two-dimensional blur kernel for the input image from the two-dimensional blur kernels for the filtered images. The image manipulation application generates a de-blurred version of the input image by executing a de-blurring algorithm based on the two-dimensional blur kernel for the input image.
    Type: Application
    Filed: November 12, 2012
    Publication date: May 15, 2014
    Applicant: Adobe Systems Incorporated
    Inventors: Jue Wang, Sunghyun Cho, Lin Zhong
  • Publication number: 20140133776
    Abstract: Systems and methods are provided for a method of adjusting a digital image. A low pass filtering is performed on a digital image to remove high frequency data to generate filtered image data. The digital image is divided into a plurality of regions, and a brightness level of a particular region of the digital image is identified using the filtered image data. A transformation curve is selected for the particular region based on the brightness level, and the transformation curve is applied to the particular region to generate adjusted image data for the particular region having adjusted brightness. The adjusted image data is stored in a computer-readable medium.
    Type: Application
    Filed: November 11, 2013
    Publication date: May 15, 2014
    Applicant: Marvell World Trade lid.
    Inventor: Samson Huang
  • Patent number: 8724920
    Abstract: An image processing device includes a component separation section configured to separate an original image signal into a plurality of components including a first component that is a framework component and a second component obtained from a residue corresponding to the original image signal from which the first component has been excluded, an edge information acquisition section configured to obtain edge information from the first component included in the plurality of components, a fluctuation-component reduction section configured to reduce a fluctuation component at least of the second component included in the plurality of components, a parameter acquisition section configured to acquire a parameter for the fluctuation-component reduction section based on the obtained edge information, and a component synthesis section configured to synthesize the first component and the component other than the first component in which the fluctuation component has been reduced.
    Type: Grant
    Filed: January 7, 2010
    Date of Patent: May 13, 2014
    Assignee: Olympus Corporation
    Inventor: Gen Horie
  • Patent number: 8712162
    Abstract: Interest points are markers anchored to a specific position in a digital image of an object. They are mathematically extracted in such a way that, in another image of the object, they will appear in the same position on the object, even though the object may be presented at a different position in the image, a different orientation, a different distance or under different lighting conditions. Methods are disclosed that are susceptible to implementation in hardware and corresponding hardware circuits are described.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: April 29, 2014
    Assignee: Aptina Imaging Corporation
    Inventor: Graham Kirsch
  • Publication number: 20140112595
    Abstract: Methods and apparatuses for adjusting a global dynamic range of an image are described. An image is decomposed into (i) a low spatial frequency component and (ii) a high spatial frequency component. The global dynamic range of the low spatial frequency component is adjusted to produce an adjusted low spatial frequency component. The image is reconstructed with (i) the adjusted low spatial frequency component and (ii) the high spatial frequency component to thereby produce a processed image.
    Type: Application
    Filed: October 21, 2013
    Publication date: April 24, 2014
    Applicant: Marvell World Trade Ltd.
    Inventor: Samson Huang