Abstract: Present embodiments pertain to systems, apparatuses, and methods for analyzing and reporting the movements in mechanical structures, inanimate physical structures, machinery, and machine components, including automatically detecting aliased frequencies of a component on the structure which exhibits frequencies higher than the maximum frequency of the FFT spectrum calculated from the acquired data. To automatically detect the presence of aliased frequencies, a second virtually identical recording is acquired using a slightly different sampling rate and this provides the basis for detecting frequencies which are greater than the Nyquist sampling rate of the video recording and calculating the true frequency value of the aliased peaks in the frequency spectrum.

Abstract: Inter-prediction using a dual filter type is described. To decode a video frame, a block location within a reference frame is determined using a motion vector and a location of a current block to be decoded. Rows of pixel values of a temporal pixel block or columns of pixel values of the temporal pixel block are generated applying a first interpolation filter to pixels corresponding to the block location along a first axis. Columns of pixel values or rows of pixel values for a first prediction block are generated by applying a second interpolation filter to the pixel values of the temporal pixel block along a second axis perpendicular to the first axis. The first and second interpolation filters are different. An encoded residual block is decoded to generate a residual block, and combining the residual block with the first prediction block reconstructs the current block.

Abstract: A method for processing digital video to have grain corresponding to a motion picture film, the method having the steps of: receiving a plurality of different grain assets corresponding to different film exposure levels; receiving a digital video image; separating the digital video image into a plurality of luminance delineated matte images; adding a different grain asset to each of the plurality of luminance delineated matte images to create a plurality of asset plates; and combining the plurality of asset plates to form a final digital video image.

Abstract: A method for processing digital video to have grain corresponding to a motion picture film, the method having the steps of: receiving a plurality of different grain assets corresponding to different film exposure levels; receiving a digital video image; separating the digital video image into a plurality of luminance delineated matte images; adding a different grain asset to each of the plurality of luminance delineated matte images to create a plurality of asset plates; and combining the plurality of asset plates to form a final digital video image.

Abstract: A method determines at least one image value of a corresponding desired output position of an output image from an input image. An orientation of an edge passing through the output position is determined in a localised region of the input image. A frequency spectrum for the region of the input image is extended. A main frequency band of the edge is aligned in the extended frequency spectrum parallel to a first sampling axis of a grid based on the orientation of the edge. The grid is selected from a set of the input and output grids. The aligned main frequency band is filtered along a second sampling axis of the grid, orthogonal to the first sampling axis, the filter removing frequencies associated with replica bands and maintaining the main frequency band. The image value is determined from the filtered edge at the desired output position.

Abstract: A band processing circuit which generates image signals corresponding to different frequency bands from an image signal in which signals corresponding to different colors are arranged and which suppresses noise by synthesizing the image signals of the different frequency bands, a sampling circuit which generates image signal corresponding to the colors by sampling the image signal input from the band processing circuit in accordance with a predetermined arrangement, and a luminance/color generation circuit which generates a luminance signal in which aliasing is suppressed using an image signal output from the sampling circuit.

Abstract: There are provided a signal processing apparatus and a control method thereof. The signal processing apparatus includes: a noise detecting unit which detects a signal-to-noise ratio of an input video signal; a coring unit which performs coring to remove a component of the video signal having a level within a predetermined reference range; and a control unit which adjusts the reference range of the coring unit corresponding to the detected signal-to-noise ratio and controls the coring unit to core the video signal based on the adjusted reference range.

Abstract: An imaging apparatus that adjusts focus based on frequency components extracted from an image signal is provided. The apparatus includes a 1st order Infinite Impulse Response (IIR)-filter including a plurality of sample delayers having a plurality of line buffers for buffering and delaying a plurality of samples to sequentially read pixels of the image signal through raster scanning and extracting frequency components of the image signal from the read pixels by using the plurality of sample delayers; and a delay sample number controller for controlling the IIR-filter to match the number of horizontal pixels sequentially read from the image signal through raster scanning to the number of the plurality of samples buffered by the plurality of line buffers.

Abstract: An information processing device, configured to divide the frequency components of image data into a plurality of frequency bands, includes an analysis filtering unit configured to perform analysis filtering for dividing the frequency components into highband components and lowband components recursively, and a holding unit configured to supply, in sync with timing for holding data supplied as a computation result of the analysis filtering by the analysis filtering unit, the data already held, which is data necessary for computation of next analysis filtering to the analysis filtering unit.

Abstract: A method and unit for noise reduction in a current image frame, wherein the current image frame is a part of a sequence of image frames. The method compares a current pixel value of a pixel within the current image frame with a corresponding pixel value of the pixel in at least one adjacent image frame, and determines a piled-up value of the current pixel value and the corresponding pixel value if a pixel difference between the current pixel value and the corresponding pixel value is below a pixel threshold, wherein the pixel threshold depends on the corresponding pixel value and/or the current pixel value. The method and unit can be applied for block and color processing as well.

Abstract: An image quality adjusting circuit in an image processing apparatus is provided with a line memory unit, a delay circuit unit, a first to fourth filter processing circuits, and an adder. In the delay circuit unit, delay circuits are arranged in a matrix form. Delay circuits arranged in a horizontal direction receive an image data directly or via line memories. The image quality adjusting circuit each perform filter processing on the received image data signals lying in a horizontal direction, in a vertical direction, in a down-right direction, and in a down-left direction. The image quality adjusting circuit performs addition of the image data on a focus pixel and the filter-processed data, and thus performs edge correction processing.

Abstract: A circuit and a method for image processing are provided. The image processing circuit has an adaptor and a sharpening circuit. The adaptor has a processing unit and a weight generator. The processing unit receives an input video signal, and the input video signal has information of a plurality of pixels. The processing unit processes the input video signal to calculate a color difference value of a target pixel of the pixels. The weight generator generates a weighting signal according to the color difference value. The sharpening circuit performs a sharpening operation on the input video signal according to the weighting signal to generate a sharpened video signal.

Abstract: An image processing method has an edge intensity value calculating section (4) for calculating an edge intensity value in a neighborhood of a pixel of interest from feature values of micro regions calculated by a feature value calculating section (3); an edge intensity value correcting section (5) for correcting the edge intensity value calculated by the edge intensity value calculating section (4) in accordance with an edge intensity correction curve; and a filter value calculating section (6) for calculating a low-pass filter value of the pixel of interest from image signal values of neighboring pixels having the same color component as the pixel of interest. It corrects the image signal value of the pixel of interest by carrying out weighted addition of the image signal value of the pixel of interest and the low-pass filter value using the edge intensity values before and after the correction.

Abstract: A video signal processing apparatus and video processing method are provided, which can reduce an influence of noise and enhance fineness of the image. A signal division unit divides a video signal into a low frequency component and a high frequency component of the video signal. A signal eliminating unit eliminates a component within a magnitude range of noise from the high frequency component of the video signal output from the signal division unit. A signal combining unit combines the low frequency component of the video signal output from the signal division unit and the high frequency component of the video signal from which the component within the magnitude range of noise is eliminated.

Abstract: A display device having a prolonged lifetime by preventing deterioration of image quality by reducing a burn-in is provided. A display device includes a still image region detecting unit for detecting still image data from video data, a detecting unit for detecting, as an edge portion, a pair of pixels having a level difference of image data larger than a set level difference, of a plurality of pair of adjacent pixels for the still image data, and a level adjusting unit for adjusting a level of the image data of a group of pixels including the edge portion and arranged consecutively and outputting the image data after the adjustment to a driving unit. The level adjusting unit adds/subtracts a random noise to/from the image data of the group of pixels.

Abstract: In a video signal processing method of processing a luminance signal of a video signal generated by causing a CCD to receive light transmitted through color filters, a control signal yf1 is generated by calculating Cy/Y using a complementary color signal Cy and a luminance signal Y, and coring correction is performed to the luminance signal by using the control signal yf1. The characteristic difference between the color filters is suppressed, and, as a result, flickers are suppressed from being generated.

Abstract: A coring device provide with a signal receiving part which receives luminance signals, and a coring part which linearly outputs an output luminance signal by applying a coring slope corresponding to a preset critical luminance level to only an input luminance signal, which is the critical luminance level or more, among the luminance signals. The coring slope means the slope when input luminance signals from the critical luminance level to the maximum input luminance level match with all the range of output luminance level. Accordingly, a gain of a high gradation signal in a high frequency band can be compensated, and the sharpness of the image quality can be improved.

Abstract: To determine the noise contained in a picture, it is proposed first to determine homogeneous picture regions of the picture (100-102) and then to measure the high-frequency signal component in these homogeneous picture regions (BR). The measurement of the high-frequency signal components is here averaged over many measurement points, i.e. over many homogenous picture regions (BR), and is processed into a noise figure (NOISE_SUM) (103-104). In this way, the quality of the picture can be measured directly in the picture content.

Abstract: A detail enhancement system uses a detail filter bank including multiple detail filters covering different frequency ranges. An input video signal representing a digital image is processed in the detail filter, wherein detail signals are extracted by the detail filters at different frequency ranges. Shoot suppression blocks and coring blocks are provided for each detail filter to prevent overshoot/undershoot artifacts and small ringing artifacts, respectively. The overall detail signal is amplitude scaled, and added back to the input signal as an enhancement, to generate a detail enhanced output signal.

Abstract: In an image signal processing device, a subtractor circuit 4 and an absolute value calculating circuit 6 calculate the absolute value of the difference between the image signal of the previous frame fed from a frame memory 1 and the image signal of the current frame, and a subtractor circuit 5 and an absolute value calculating circuit 7 calculate the absolute value of the difference between the image signal of the previous-previous frame fed from a frame memory 2 and the image signal of the previous frame. An adder circuit 8 adds together the thus calculated absolute values of the differences between those image signals to calculate the degree of motion, on the basis of which a gain setting circuit 9 sets a gain. The output from the subtractor circuit 4 is multiplied by this gain to generate a noise component.

Abstract: A contour enhancement method and circuit for adaptively enhancing a contour component of a luminance signal. In the method, a coring operation is performed with respect to the contour component. For the coring operation, a coring value is used which is adjusted according to characteristics of the contour component detected from an input luminance signal. The cored contour component is amplified by a predetermined gain, and the level of the gain-controlled contour component is limited to a predetermined threshold value to output a level-limited contour component. The level-limited contour component is then added to the input luminance signal to become a contour-enhanced luminance signal.

Abstract: In a method of processing a video signal, including the step furnishing (11) a filtered signal in response to the video signal, the filtering is adapted (22) in dependence upon a statistical property (AC) of a modification effected by the filtering in a previous time interval of the video signal. Preferably, the filtering is adapted (22) in dependence upon an average modification (AC) effected by the filtering in a previous field or frame of the video signal.

Abstract: Noise reduction circuitry, in a video signal compression apparatus of the predictive DPCM compression type includes a simple nonlinear processing element within the DPCM loop to eliminate residues between predicted and real image signals, which are smaller than a predetermined value. Elimination of such residues dramatically reduces the amount of compressed data generated for signals including even modest amounts of noise.

Abstract: A noise suppression apparatus suppresses noise of a luminance signal, for example, at a fringe of area of reception in a television receiver. The noise suppression apparatus includes a tuner circuit, an intermediate frequency amplification circuit, a video detection/amplification circuit, an AGC detection/amplification circuit, an RF AGC circuit, a sound/chrominance signal separation circuit, a luminance signal processing circuit and a luminance signal noise suppression circuit.

Abstract: A circuit provides an output signal having a portion with a constant maximum amplitude, followed by a portion decreasing down to a constant zero value when an input voltage increases from zero. The circuit includes an asymmetrical differential stage having a low gain branch and a high gain branch, respectively controlling two branches of a symmetrical differential stage. The current of the asymmetrical differential stage corresponds to the end of the decreasing portion. The current of the symmetrical differential stage corresponds to the maximum amplitude of the signal which is provided by one of the branches of the symmetrical differential stage. The high gain branch and low gain branch are respectively controlled by the input voltage and by a voltage corresponding to the beginning of the decreasing portion.

Abstract: A method for processing video data for increased sharpness. The data undergoes a process by which it is filtered in two dimensions. Using separable, one-dimensional filters, the process cores the data to prevent noise enhancement and applies gain to the resulting data. Finally, both dimensional filtered components are then combined to form the final sharpened image. Because of the separable nature of the process and filters, either one of the dimensional filters could be eliminated, while retaining the robustness of the method.

Abstract: An apparatus for suppressing interference in a television video signal comprises series connected a high-pass filter (1), an electronic switch (2) and a low-pass filter (4), and a video signal front detector (3) having its input connected to the output of the low-pass filter (1), while the output thereof is connected to the control input of the electronic switch (2).

Abstract: A coring circuit for an input signal in the form of a differential input current having two components in phase opposition. A first pair of cascode transistors biased by a first reference voltage applies a first fraction of each of the components of the differential current to respectively first and second resistors. A second pair of cascode transistors biased by the first reference voltage provides a second fraction of each of the components of the differential current to a differential current output of the coring circuit and respectively to first and second branches of a differential stage that also receives voltages across the first and second resistors. Two coring current sources respectively connect first and second outputs of the differential stage to a supply voltage and are connected to each other through a third resistor.

Abstract: In video signal processing circuitry detail enhancement is done on each of three color channels in response to the detail information, the enhancement of the detail in each color channel being done in reliance on separated high-spatial-frequency information originally contained in that channel, as long as it is sufficiently greater in amplitude than a reference level somewhat above that expected for thermal noise. When the amplitude of the detail information originally contained in a channel is insufficiently above that reference level, the thermal noise is suppressed by subtracting the separated high-spatial-frequency information therefrom. The same filter arrangements are used to separate high-spatial-frequency information for suppressing thermal noise in each color channel as for enhancing the detail in each color channel.

Abstract: A circuit arrangement for improving the quality of video signals read out from a storage medium by isolating and processing a radio-frequency component which is added to a delayed video signal. An improvement can be achieved in particular in the signal details without any noise amplification effects and at the same time providing a natural picture. The circuit arrangement includes a synchronizing pulse separation stage for separating the radio-frequency component from the synchronizing pulses, a coring stage for suppressing signal components with signal values lying below a first threshold value and a controllable amplification stage, which influences the instantaneous signal value with a characteristic curve which is dependent on the signal value in a main signal branch and provides an increasing relative boosting of the radio-frequency component for greater signal values in the main signal branch.

Abstract: A noise eliminative circuit for eliminating noise components contained in an input image signal in which a high-frequency noise component is eliminated through a coring circuit, and a low-frequency noise component is selectively eliminated by horizontal and vertical correlation, without a damage to the input image signal. A coring circuit is employed for a horizontal high-frequency component of an image signal to remove a minute noise component, and an impulse noise elimination method is applied to a remaining component of the image signal to eliminate the noise component which is also removed in accordance with a user's selection of the high-frequency band.

Abstract: An exposure controller comprises a discharge pulse calculation circuit for calculating a discharge pulse count to be output to a solid-state image pickup device within one field period, and a coring circuit for defining the quotient obtained from the discharge pulse count divided by a predetermined setting value and plus 1 as a coring value. In an electronic camera system incorporating an electronic iris, when one discharge pulse changes, the amount of change in the luminance level of an image signal becomes larger as an exposure time becomes shorter, whereby hunting is prevented from occurring at the convergent point of the luminance level, and an exposure controller which is compact and has excellent characteristics can be embodied.