Patent application number | Description | Published |
20080199090 | CODING METHOD CONVERSION APPARATUS - A coding method conversion apparatus converts the first coded data coded by the first coding method into the second coded data. The coding method conversion apparatus includes: an H.264 decoder which decodes the first coded data; a deblocking filter strength calculation unit which calculates a filter strength of deblocking filtering of a second coding method, using at least one piece of decoding information except a coding type of the first coded data, the decoding information being obtained by decoding the first coded data; and a deblocking filter which performs the deblocking filtering to reduce noise in a boundary of blocks according to the filter strength calculated by the deblocking filter strength calculation unit. | 08-21-2008 |
20080317377 | IMAGE CODING APPARATUS AND IMAGE CODING METHOD - The image coding apparatus according to the present invention is an image coding apparatus, including an imaging unit, a chroma quantization width adjustment unit configured to determine a chroma quantization width using a first method when the amount of the incident light on the imaging unit is larger than the predetermined amount, and to adjust the chroma quantization width such that the chroma quantization width is larger than a quantization width determined using the first method when the light amount judging unit judges that the amount of the incident light is smaller than the predetermined amount, and a luma quantization width adjustment unit configured to determine a luma quantization width using a second method without being dependent on the amount of the incident light. | 12-25-2008 |
20090010322 | PICTURE CODING APPARATUS - The picture coding apparatus, which optimizes data amount of coded picture data without entailing an increase in circuit size and/or power consumption, includes: a picture input unit which obtains a moving picture signal Vin; a buffer; a lead detecting unit which detects a lead portion from the moving picture represented by the moving picture signal Vin; a coding unit which codes the moving picture signal Vin in the lead portion detected by the lead detecting unit, according to a coding condition for temporary coding; and a coding condition generating unit which generates a coding condition for actual coding, based on the result of the coding by the coding unit and the coding condition for temporary coding. Then, coding unit codes the moving picture signal Vin representing the moving picture including the aforementioned lead portion, according to the coding condition for actual coding. | 01-08-2009 |
20090103618 | PICTURE CODING APPARATUS AND PICTURE CODING METHOD - The picture coding apparatus includes: a picture feature amount extracting unit which extracts respective feature amounts of the current picture and a picture having a specific relationship with the current picture; a correlation degree calculating unit which calculates, based on the feature amount extracted by the feature amount extracting unit, a correlation degree indicating a degree of image similarity between the current picture and the picture having a specific relationship with the current picture; a picture type determining unit which determines, depending on the calculated correlation degree, a picture type for the current picture, from two picture types on which different inter-picture prediction is performed; and a coding unit which codes the current picture according to the determined picture type. | 04-23-2009 |
20090245350 | IMAGE CODING APPARATUS AND IMAGE CODING METHOD - To provide an image coding apparatus and an image coding method for reliably suppressing delays in image coding processing while suppressing increases in circuit size. An image coding apparatus ( | 10-01-2009 |
20100026829 | IMAGE CODING APPARATUS, IMAGE CODING METHOD, INTEGRATED CIRCUIT, AND CAMERA - An image coding apparatus which compression-codes moving picture data including a current image to be coded, the image coding apparatus including an accumulating unit which accumulates a reference image, a predicted image generating unit which generates a predicted image of the current image to be coded, based on the reference image accumulated in the accumulating unit, by performing motion compensation with weighted prediction or motion compensation without the weighted prediction, the weighted prediction being a process of adding a predetermined offset value to a pixel value of the reference image, a coding unit which codes a difference between the predicted image generated by the predicted image generating unit and the current image to be coded, and a determining unit which determines whether or not the current image to be coded is included in, among the moving picture data, a picture group which is a group of successive pictures and indicates motion equal to or larger than a predetermined amount of motion, in which the predicted image generating unit generates the predicted image by performing the motion compensation without the weighted prediction when the determining unit determines that the current image to be coded is included in the picture group, and to generate the predicted image by performing the motion compensation with the weighted prediction when it is determined that the current image to be coded is not included in the picture group. | 02-04-2010 |
20100033594 | IMAGE CODING APPARATUS, IMAGE CODING METHOD, IMAGE CODING INTEGRATED CIRCUIT, AND CAMERA - An image coding apparatus including: a reference index assignment unit configured to assign reference indices to plural reference pictures which can be referred to by a current picture to be coded, each of the reference indices having a different value and being assigned to a corresponding one of the plural reference pictures; and an image coding unit configured to perform field-coding on the current picture to be coded, by referring to the reference pictures indicated by the reference indices assigned by the reference index assignment unit, and to code the reference indices, wherein the reference index assignment unit is configured to assign, to one of two reference pictures included in the plural reference pictures, a reference index having a value smaller than a value of a reference index to be assigned to the other reference picture, the one of the two reference pictures being temporally closer to the current picture to be coded than the other reference picture. | 02-11-2010 |
20100202513 | VIDEO SIGNAL CODING APPARATUS AND VIDEO SIGNAL CODING METHOD - Video signal coding apparatus includes: a quantization unit which quantizes, using coefficient values in a first quantization matrix, a luminance signal of each of a first picture and a second picture coded after the first picture, and quantizes, using coefficient values in a second quantization matrix, a chrominance signal of each of the first picture and the second picture; a code amount obtainment unit which obtains a luminance code amount and a chrominance code amount of each of the first picture and the second picture; a rate calculation unit which calculates a rate of the chrominance code amount with respect to the luminance code amount for each of the first picture and the second picture, obtained by the code amount obtainment unit; and a rate control unit which changes a coefficient value of at least one of the first matrix and the second matrix used in quantizing the second picture, before the quantization unit quantizes the second picture, so that the rate for the second picture becomes smaller than the rate for the first picture. | 08-12-2010 |
20100303155 | IMAGE CODING DEVICE, IMAGE CODING METHOD, IMAGE CODING INTEGRATED CIRCUIT AND IMAGE CODING PROGRAM - An image coding device ( | 12-02-2010 |
20110274163 | VIDEO CODING APPARATUS AND VIDEO CODING METHOD - A video coding apparatus includes: a change amount detection unit that detects, based on pixel data included in a target block to be coded, an amount of change indicating a displacement between a top field and a bottom field caused by a difference in image capture time between the top field and the bottom field which are consecutive; a quantization width determination unit that determines, as a quantization width used for the target block, a first quantization width when the amount of change is a first value, and a second quantization width when the amount of change is a second value that is larger than the first value, the second quantization width being smaller than the first quantization width; and a quantization unit that quantizes the target block using the quantization width determined by the quantization width determination unit. | 11-10-2011 |
20110292998 | IMAGE CODING APPARATUS AND IMAGE CODING METHOD - To provide an image coding apparatus and an image coding method that allow selecting, according to an image in a macroblock to be coded, a most appropriate intra prediction mode for controlling the amount of generated code. | 12-01-2011 |
20120002022 | IMAGE CODING APPARATUS, IMAGE CODING METHOD, PROGRAM, AND INTEGRATED CIRCUIT - An image coding apparatus records stereoscopic video partially as 2D video so as to enable display to be performed while seamlessly switching between 3D video and 2D video, and includes: a control unit that sets one of a 2D coding mode and a 3D coding mode which are modes of coding the stereoscopic video so that, when displayed in 3D, the stereoscopic video is displayed as 2D video and 3D video respectively; and a coding unit that, in the case where the control unit switches from the 3D coding mode to the 2D coding mode, codes the to stereoscopic video according to a 3D coding standard in the 3D coding mode, and codes the stereoscopic video according to the 3D coding standard using a coding condition in the 2D coding mode, the coding condition being a condition for causing the stereoscopic video to be viewed as the 2D video when displayed. | 01-05-2012 |
20120002723 | STEREO VIDEO CODING APPARATUS AND STEREO VIDEO CODING METHOD - A stereo video coding apparatus which codes, out of a first viewpoint video and second viewpoint video, at least a second image included in the second viewpoint video, and includes: a judgment unit and a selection unit which output one of a prediction image generated by applying motion compensation to the second viewpoint video and a prediction image generated by applying disparity compensation to the first viewpoint video, by selectively switching between the prediction images; a subtractor; an orthogonal transform unit; a quantization unit; and a control unit which determines a quantization step size to be used by the quantization unit. The control unit determines a quantization step size to be applied to the second image to be a value smaller than a quantization step size to be applied to a first image that is paired with the second image, when the judgment unit selects the prediction image generated by applying disparity compensation. | 01-05-2012 |
20120140036 | STEREO IMAGE ENCODING DEVICE AND METHOD - Provided is a stereo image coding apparatus ( | 06-07-2012 |
20120182401 | DEVICE, METHOD, AND COMPUTER PROGRAM FOR THREE-DIMENSIONAL VIDEO PROCESSING | 07-19-2012 |
20120194643 | VIDEO CODING DEVICE AND VIDEO CODING METHOD - A video coding device includes a three-dimensional video detection unit that determines whether an input video is a three-dimensional video or a two-dimensional video, a coding parameter setting unit that sets an upper limit value of a quantization width to be used in coding on the basis of the result of the determination by the three-dimensional video detection unit, and a coding unit that codes the input video at a quantization width not more than the upper limit value set in the coding parameter setting unit, wherein when the three-dimensional video detection unit determines that the input video is the three-dimensional video, the coding parameter setting unit sets the upper limit value of the quantization width for the three-dimensional video at a different value from the upper limit value of the quantization width for two-dimensional video. | 08-02-2012 |
20120200668 | VIDEO REPRODUCING APPARATUS AND VIDEO REPRODUCING METHOD - A video reproducing apparatus includes: a decoding unit configured to decode the coded images for stereoscopic viewing, and output the decoded images for stereoscopic viewing and coding-related information which is used in the coding of the images for stereoscopic viewing and is related to compression distortion which occurs due to the coding; a quality determining unit configured to determine whether the decoded images for stereoscopic viewing should be output as a two-dimensional video or as a three-dimensional video, based on the coding-related information related to the compression distortion; and a screen generating unit configured to output the decoded images for stereoscopic viewing as the two-dimensional video or the three-dimensional video, according to the determination by the quality determining unit. | 08-09-2012 |
20130044191 | DEVICE AND METHOD FOR GENERATING STEREOSCOPIC IMAGE - A rotation angle obtaining unit obtains an angle by which a stereoscopic image of a subject is to be rotated around a line-of-sight direction. A multi-viewpoint image accumulation unit accumulates a plurality of images of the subject obtained in one direction by changing capturing positions, as multi-viewpoint images. A selection unit selects base images for the stereoscopic image from the multi-viewpoint images accumulated in the multi-viewpoint image accumulation unit, based on the rotation angle. A rotation unit rotates the selected base images based on the rotation angle to generate images which are to form the stereoscopic image of the subject. | 02-21-2013 |
20130121667 | VIDEO SIGNAL CONVERTING APPARATUS AND VIDEO SIGNAL CONVERTING METHOD - The recorder apparatus includes the controller that sets conversion mode used when input stream is processed and converted into recording stream to any of two-dimensional mode that converts the input stream into two-dimensional recording stream and three-dimensional mode that converts the input stream into three-dimensional recording stream, the controller that sets one recording mode that can be used when the video signal is converted and processed in the two-dimensional mode and the three-dimensional mode and specifies recording rate, and the signal processor that processes the video signal based on the set conversion mode and the set recording mode to convert the video signal into recording video signal. The controller sets the recording modes such that combination of the recording modes that can be set when the two-dimensional mode is set is different from combination of recording modes that can be set when the three-dimensional mode is set. | 05-16-2013 |
20130162770 | 3D ENCODING APPARATUS - A 3D encoding apparatus encodes an input image and generates and outputs a three dimensional stream including a basic stream and an extended stream including a plurality of image groups. A 3D encoding apparatus includes a setter that sets a specific delay value for each image group based on the a first delay value as a delay value of the basic stream and a second delay value as a delay value of the three dimensional stream. The setter sets the specific delay value to a value not more than smaller one of the first delay value and the second delay value. The first virtual buffer and the second virtual buffer perform the buffer simulation for n+1th image group based on information about the specific delay value of the nth image group set by the setter in the basic stream and three dimensional stream. | 06-27-2013 |
20130258053 | THREE-DIMENSIONAL VIDEO ENCODING APPARATUS, THREE-DIMENSIONAL VIDEO CAPTURING APPARATUS, AND THREE-DIMENSIONAL VIDEO ENCODING METHOD - A provided three-dimensional video encoding apparatus adaptively switches a method of setting a reference picture according to a parallax between right and left sides, thereby improving encoding efficiency. A parallax acquisition unit | 10-03-2013 |
20130258061 | STEREOSCOPIC IMAGE INSPECTION DEVICE, STEREOSCOPIC IMAGE PROCESSING DEVICE, AND STEREOSCOPIC IMAGE INSPECTION METHOD - A stereoscopic image inspection device configured to determine that a stereoscopic image or part of the stereoscopic image is horizontally reversed is provided. A depth obtaining unit obtains depth information of the stereoscopic image. An occlusion detection unit detects an occlusion area of the stereoscopic image. A determination unit evaluates image continuity between the occlusion area and adjacent areas adjacent to the occlusion area, and identifies a first area to which the occlusion area belongs among the adjacent areas based on the evaluated image continuity, and determines whether or not the stereoscopic image has a depth contradiction based on a depth position of the first area included in the depth information. | 10-03-2013 |
20140044186 | IMAGE CODING DEVICE, IMAGE CODING METHOD, IMAGE CODING INTEGRATED CIRCUIT AND IMAGE CODING PROGRAM - An image coding device which codes input image data includes a coding flag generation unit which determines whether or not the input image data is image data included in data of a moving picture showing a motion of a predetermined motion amount or greater, and generates coding flag information which indicates a result of the determination. A coding method determination unit determines a coding method in which the input image data references coded image data that the coded image data indicates is the input image data included in the data of the moving picture that is closer to the input image data. An image coding unit compression-codes the input image data using the coding method determined by the coding method determination unit. | 02-13-2014 |
20140049544 | THREE-DIMENSIONAL VIDEO IMAGE PROCESSING DEVICE AND THREE-DIMENSIONAL VIDEO IMAGE PROCESSING METHOD - A displacement map generation section generates, for a stereoscopic image, a displacement map indicating a displacement of a second viewpoint image relative to a first viewpoint image. A first new image generation section performs rotation processing in accordance with a given rotation angle on the first viewpoint image to generate a new first viewpoint image. A displacement map correction section performs correction processing on the displacement map on the basis of the rotation angle to generate a corrected displacement map. A second new image generation section generates a new second viewpoint image from the new first viewpoint image on the basis of the corrected displacement map. | 02-20-2014 |
20140049608 | VIDEO PROCESSING DEVICE AND VIDEO PROCESSING METHOD - A video processing device allows a viewer to suitably see an image in reproducing a compression coded stereoscopic image signal. A decoder decodes the compression coded signal of a stereoscopic image received as an input stream. A determiner evaluates a degree of a difference between a first viewpoint image and a second viewpoint image of the decoded stereoscopic image signal, and determines a display mode of the stereoscopic image signal based on the evaluation result. A picture generator generates an output image according to the determined display mode. | 02-20-2014 |