Patent application number | Description | Published |
20080232467 | Image Decoding Method - There is provided an image decoding method for decoding a picture to be decoded by referencing an appropriate picture even when random access reproduction is performed. The method includes: a first storage step (S | 09-25-2008 |
20090141798 | Image Decoding Apparatus and Image Decoding Method - An image decoding apparatus and an image decoding method capable of generating a decoded image even in the case where a pixel in a block is necessary as a reference pixel, the block where an intra prediction mode specified in a stream is unavailable according to a standard, due to a transmission error, a coding-method error, or the like. An image decoding apparatus ( | 06-04-2009 |
20090168886 | MOVING PICTURE DECODING DEVICE - A moving picture decoding device | 07-02-2009 |
20090268064 | VIDEO SIGNAL PROCESSING APPARATUS - A video signal processing apparatus includes: an imaging section for imaging a subject to generate a video signal; an outline emphasis processing section for emphasizing an outline portion within the imaged image, the outline emphasis processing section detecting the outline portion based on the video signal which is output from the imaging section and emphasizing the outline portion by using an externally-input outline emphasis control signal; an imaging control section for generating at least one imaging control signal for controlling an imaging operation of the imaging section; and an outline emphasis control section for generating an outline emphasis control signal for determining a level of emphasizing the outline portion in accordance with the at least one imaging control signal, and transmitting the outline emphasis control signal to the outline emphasis processing section. The video signal processing apparatus is able to perform an appropriate outline emphasis process under any imaging condition and provide a good image quality. | 10-29-2009 |
20090323821 | MOVING PICTURE DECODING APPARATUS - Provided is a moving picture decoding apparatus including: a picture memory ( | 12-31-2009 |
20100104011 | MOVING PICTURE CODING METHOD - A moving picture coding method for coding a moving picture includes: determining a luminance change (S | 04-29-2010 |
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 |
20100232496 | DECODING-PROCESSING APPARATUS AND METHOD - A decoding-processing apparatus that decodes bitstreams using an intermediate format. The apparatus includes a context-calculating unit ( | 09-16-2010 |
20100232516 | DECODING-PROCESSING APPARATUS AND METHOD - A decoding-processing apparatus that decodes bitstreams using an intermediate format. The apparatus includes a context-calculating unit ( | 09-16-2010 |
20100296588 | DYNAMIC IMAGE COMPRESSION DEVICE - A deblock filter as defined by the MPEG-4 AVC/H. 264 standard is effectively controlled, and an increase of a compression strain is prevented while the resolution or details are preserved to realize compression of a moving image with high image quality. | 11-25-2010 |
20100316120 | MOVING PICTURE CODING DEVICE AND BROADCAST WAVE RECORDING DEVICE - A device coding a moving picture in units of a group including pictures, including: a generation unit generating quantization matrices; a selection unit selecting a quantization matrix for a current picture; a unit storing the quantization matrices in a header part of the group, and coding the current picture; a unit including a virtual buffer, and performing buffer simulation based on an amount of bits to be outputted; and a unit determining whether bit amount reducing is required for the current picture, based on a result of the buffer simulation, wherein the generation unit generates a normal quantization matrix used in common for at least one of the pictures, and a quantization matrix for bit amount reducing used only when the bit amount reducing is required, and the selection unit selecting the quantization matrix for bit amount reducing used for the current picture, when the bit amount reducing is required. | 12-16-2010 |
20110142134 | IMAGE CODING METHOD AND IMAGE CODING APPARATUS - A method of coding an original image, including: partitioning (S | 06-16-2011 |
20110176740 | IMAGE CODING METHOD, IMAGE CODING APPARATUS, PROGRAM, AND INTEGRATED CIRCUIT - Provided is an image coding method for determining one of frame coding and field coding while suppressing increase in the complexity. The image coding method includes: coding a current picture included in the pictures (S | 07-21-2011 |
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 |
20120183072 | MOVING PICTURE DECODING APPARATUS - Provided is a moving picture decoding apparatus including: a picture memory ( | 07-19-2012 |
20130094583 | MOVING PICTURE CODING METHOD AND MOVING PICTURE DECODING METHOD - According to a picture coding method, a coded picture is stored, as a reference picture, into a storage unit; commands indicating correspondence between reference pictures and reference indices for designating reference pictures and coefficients used for generation of predictive images are generated; a reference picture being used when motion compensation is performed on a current block in a current picture to be coded is designated by a reference index; a predictive image is generated by performing linear prediction on a block being obtained by motion estimation within the designated reference picture, by use of a coefficient corresponding to the reference index; a coded image signal including a coded signal obtained by coding a prediction error being a difference between the current block in the current picture to be coded and the predictive image, the commands, the reference index and the coefficient is outputted. | 04-18-2013 |
20130101045 | MOVING PICTURE CODING METHOD AND MOVING PICTURE DECODING METHOD - According to a picture coding method, a coded picture is stored, as a reference picture, into a storage unit; commands indicating correspondence between reference pictures and reference indices for designating reference pictures and coefficients used for generation of predictive images are generated; a reference picture being used when motion compensation is performed on a current block in a current picture to be coded is designated by a reference index; a predictive image is generated by performing linear prediction on a block being obtained by motion estimation within the designated reference picture, by use of a coefficient corresponding to the reference index; a coded image signal including a coded signal obtained by coding a prediction error being a difference between the current block in the current picture to be coded and the predictive image, the commands, the reference index and the coefficient is outputted. | 04-25-2013 |
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 |
20130272382 | FIELD/FRAME ADAPTIVE DECODING WITH FIELD/FRAME INDEX - A moving picture coding method for coding a picture with switching between frame coding and field coding adaptively on a block-by-block basis includes: determining the maximum number of reference indices for field coding for specifying fields which are to be referred to at the time of field coding, using the maximum number of reference indices for frame coding for specifying frames which are to be referred to at the time of frame coding; and assigning to fields the reference indices for field coding for specifying fields which are to be referred to at the time of field coding, within a range of the determined maximum number thereof, using the reference indices for frame coding for specifying frames which are to be referred to at the time of frame coding. | 10-17-2013 |
20130301723 | VIDEO ENCODING APPARATUS AND VIDEO ENCODING METHOD - A video encoding apparatus includes: an obtaining unit which sequentially obtains pictures included in video signals; and an encoding unit which (i) encodes an anchor picture in a first video signal using only an intra prediction, and outputs the anchor picture in an I-picture format, (ii) encodes an anchor picture in a second video signal using only the intra prediction, and outputs the anchor picture in a P-picture format, and (iii) encodes pictures other than the anchor pictures and included in the first and second video signals using the intra prediction or an inter prediction in a temporal direction. | 11-14-2013 |
20130315495 | PICTURE CODING METHOD AND PICTURE DECODING METHOD - The method includes the following units: a coefficient number detecting unit ( | 11-28-2013 |
20130322541 | MOTION VECTOR CODING METHOD AND MOTION VECTOR DECODING METHOD - A motion vector coding unit executes processing including a neighboring block specification step of specifying a neighboring block which is located in the neighborhood of a current block; a judgment step of judging whether or not the neighboring block has been coded using a motion vector of another block; a prediction step of deriving a predictive motion vector of the current block using a motion vector calculated from the motion vector of the other block as a motion vector of the neighboring block; and a coding step of coding the motion vector of the current block using the predictive motion vector. | 12-05-2013 |
20130329801 | MOTION VECTOR CODING METHOD AND MOTION VECTOR DECODING METHOD - A motion vector coding unit executes processing including a neighboring block specification step of specifying a neighboring block which is located in the neighborhood of a current block; a judgment step of judging whether or not the neighboring block has been coded using a motion vector of another block; a prediction step of deriving a predictive motion vector of the current block using a motion vector calculated from the motion vector of the other block as a motion vector of the neighboring block; and a coding step of coding the motion vector of the current block using the predictive motion vector. | 12-12-2013 |
20130329802 | MOTION VECTOR CODING METHOD AND MOTION VECTOR DECODING METHOD - A motion vector coding unit executes processing including a neighboring block specification step of specifying a neighboring block which is located in the neighborhood of a current block; a judgment step of judging whether or not the neighboring block has been coded using a motion vector of another block; a prediction step of deriving a predictive motion vector of the current block using a motion vector calculated from the motion vector of the other block as a motion vector of the neighboring block; and a coding step of coding the motion vector of the current block using the predictive motion vector. | 12-12-2013 |
20130329803 | MOTION VECTOR CODING METHOD AND MOTION VECTOR DECODING METHOD - A motion vector coding unit executes processing including a neighboring block specification step of specifying a neighboring block which is located in the neighborhood of a current block; a judgment step of judging whether or not the neighboring block has been coded using a motion vector of another block; a prediction step of deriving a predictive motion vector of the current block using a motion vector calculated from the motion vector of the other block as a motion vector of the neighboring block; and a coding step of coding the motion vector of the current block using the predictive motion vector. | 12-12-2013 |
20130329804 | MOTION VECTOR CODING METHOD AND MOTION VECTOR DECODING METHOD - A motion vector coding unit executes processing including a neighboring block specification step of specifying a neighboring block which is located in the neighborhood of a current block; a judgment step of judging whether or not the neighboring block has been coded using a motion vector of another block; a prediction step of deriving a predictive motion vector of the current block using a motion vector calculated from the motion vector of the other block as a motion vector of the neighboring block; and a coding step of coding the motion vector of the current block using the predictive motion vector. | 12-12-2013 |
20130329805 | MOTION VECTOR CODING METHOD AND MOTION VECTOR DECODING METHOD - A motion vector coding unit executes processing including a neighboring block specification step of specifying a neighboring block which is located in the neighborhood of a current block; a judgment step of judging whether or not the neighboring block has been coded using a motion vector of another block; a prediction step of deriving a predictive motion vector of the current block using a motion vector calculated from the motion vector of the other block as a motion vector of the neighboring block; and a coding step of coding the motion vector of the current block using the predictive motion vector. | 12-12-2013 |
20140003515 | VIDEO IMAGE DECODING DEVICE AND VIDEO IMAGE DECODING METHOD | 01-02-2014 |
20140037003 | MOTION COMPENSATION METHOD, PICTURE CODING METHOD AND PICTURE DECODING METHOD - A picture coding apparatus includes a motion vector estimation unit and a motion compensation unit. The motion vector estimation unit selects one method for deriving a motion vector of a block to be motion-compensated, depending on a motion vector of a block located in a corner of a decoded macroblock from among a group of blocks that compose the decoded macroblock corresponding to the current macroblock to be coded and determines the motion vector derived by the selected method for derivation to be a candidate of the motion vector of the current macroblock to be coded. The motion compensation unit generates a predictive image of the block to be motion-compensated based on the estimated motion vector. | 02-06-2014 |
20140037009 | MOTION COMPENSATION METHOD, PICTURE CODING METHOD AND PICTURE DECODING METHOD - A picture coding apparatus includes a motion vector estimation unit and a motion compensation unit. The motion vector estimation unit selects one method for deriving a motion vector of a block to be motion-compensated, depending on a motion vector of a block located in a corner of a decoded macroblock from among a group of blocks that compose the decoded macroblock corresponding to the current macroblock to be coded and determines the motion vector derived by the selected method for derivation to be a candidate of the motion vector of the current macroblock to be coded. The motion compensation unit generates a predictive image of the block to be motion-compensated based on the estimated motion vector. | 02-06-2014 |
20140044172 | MOTION VECTOR CODING AND DECODING METHODS - A motion vector coding apparatus includes a motion vector coding unit that codes a motion vector inputted from a motion vector detecting unit. A motion vector for each current block is coded based on a difference between the motion vector and a predicted vector obtained from motion vectors for previously coded neighboring blocks. The predicted vector is generated by one of: the motion vectors referring to the same picture are selected from among the motion vectors for the neighboring blocks; the motion vectors for neighboring blocks are ordered in the predetermined order and the motion vectors of the same order rank are selected; and the predicted vector for a second motion vector of the current block is the first motion vector, and when the second motion vector and the first motion vector refer to different pictures, the first motion vector is scaled based on temporal distance between the pictures. | 02-13-2014 |
20140044173 | MOTION VECTOR CODING AND DECODING METHODS - A motion vector coding apparatus includes a motion vector coding unit that codes a motion vector inputted from a motion vector detecting unit. A motion vector for each current block is coded based on a difference between the motion vector and a predicted vector obtained from motion vectors for previously coded neighboring blocks. The predicted vector is generated by one of: the motion vectors referring to the same picture are selected from among the motion vectors for the neighboring blocks; the motion vectors for neighboring blocks are ordered in the predetermined order and the motion vectors of the same order rank are selected; and the predicted vector for a second motion vector of the current block is the first motion vector, and when the second motion vector and the first motion vector refer to different pictures, the first motion vector is scaled based on temporal distance between the pictures. | 02-13-2014 |
20140044182 | MOTION VECTOR CODING AND DECODING METHODS - A motion vector coding apparatus includes a motion vector coding unit that codes a motion vector inputted from a motion vector detecting unit. A motion vector for each current block is coded based on a difference between the motion vector and a predicted vector obtained from motion vectors for previously coded neighboring blocks. The predicted vector is generated by one of: the motion vectors referring to the same picture are selected from among the motion vectors for the neighboring blocks; the motion vectors for neighboring blocks are ordered in the predetermined order and the motion vectors of the same order rank are selected; and the predicted vector for a second motion vector of the current block is the first motion vector, and when the second motion vector and the first motion vector refer to different pictures, the first motion vector is scaled based on temporal distance between the pictures. | 02-13-2014 |
20140044183 | MOTION VECTOR CODING AND DECODING METHODS - A motion vector coding apparatus includes a motion vector coding unit that codes a motion vector inputted from a motion vector detecting unit. A motion vector for each current block is coded based on a difference between the motion vector and a predicted vector obtained from motion vectors for previously coded neighboring blocks. The predicted vector is generated by one of: the motion vectors referring to the same picture are selected from among the motion vectors for the neighboring blocks; the motion vectors for neighboring blocks are ordered in the predetermined order and the motion vectors of the same order rank are selected; and the predicted vector for a second motion vector of the current block is the first motion vector, and when the second motion vector and the first motion vector refer to different pictures, the first motion vector is scaled based on temporal distance between the pictures. | 02-13-2014 |
20140044184 | MOTION VECTOR CODING AND DECODING METHODS - A motion vector coding apparatus includes a motion vector coding unit that codes a motion vector inputted from a motion vector detecting unit. A motion vector for each current block is coded based on a difference between the motion vector and a predicted vector obtained from motion vectors for previously coded neighboring blocks. The predicted vector is generated by one of: the motion vectors referring to the same picture are selected from among the motion vectors for the neighboring blocks; the motion vectors for neighboring blocks are ordered in the predetermined order and the motion vectors of the same order rank are selected; and the predicted vector for a second motion vector of the current block is the first motion vector, and when the second motion vector and the first motion vector refer to different pictures, the first motion vector is scaled based on temporal distance between the pictures. | 02-13-2014 |
20140044185 | MOTION VECTOR CODING AND DECODING METHODS - A motion vector coding apparatus includes a motion vector coding unit that codes a motion vector inputted from a motion vector detecting unit. A motion vector for each current block is coded based on a difference between the motion vector and a predicted vector obtained from motion vectors for previously coded neighboring blocks. The predicted vector is generated by one of: the motion vectors referring to the same picture are selected from among the motion vectors for the neighboring blocks; the motion vectors for neighboring blocks are ordered in the predetermined order and the motion vectors of the same order rank are selected; and the predicted vector for a second motion vector of the current block is the first motion vector, and when the second motion vector and the first motion vector refer to different pictures, the first motion vector is scaled based on temporal distance between the pictures. | 02-13-2014 |
20140056351 | MOVING PICTURE CODING METHOD AND MOVING PICTURE DECODING METHOD - According to a picture coding method, a coded picture is stored, as a reference picture, into a storage unit; commands indicating correspondence between reference pictures and reference indices for designating reference pictures and coefficients used for generation of predictive images are generated; a reference picture being used when motion compensation is performed on a current block in a current picture to be coded is designated by a reference index; a predictive image is generated by performing linear prediction on a block being obtained by motion estimation within the designated reference picture, by use of a coefficient corresponding to the reference index; a coded image signal including a coded signal obtained by coding a prediction error being a difference between the current block in the current picture to be coded and the predictive image, the commands, the reference index and the coefficient is outputted. | 02-27-2014 |
20140056359 | MOVING PICTURE CODING METHOD AND MOVING PICTURE DECODING METHOD - According to a picture coding method, a coded picture is stored, as a reference picture, into a storage unit; commands indicating correspondence between reference pictures and reference indices for designating reference pictures and coefficients used for generation of predictive images are generated; a reference picture being used when motion compensation is performed on a current block in a current picture to be coded is designated by a reference index; a predictive image is generated by performing linear prediction on a block being obtained by motion estimation within the designated reference picture, by use of a coefficient corresponding to the reference index; a coded image signal including a coded signal obtained by coding a prediction error being a difference between the current block in the current picture to be coded and the predictive image, the commands, the reference index and the coefficient is outputted. | 02-27-2014 |
20140064358 | DECODING METHOD FOR DECODING AN INCOMING BITSTREAM AND METHOD FOR PERFORMING THE SAME - There is disclosed a decoding method for decoding an incoming bitstream entropy-encoded according to an encoding method based on either of arithmetic encoding algorithm and non-arithmetic encoding algorithm, the incoming bitstream including syntax elements. The decoding method includes a first converting step of converting the incoming bitstream into an intermediate bitstream according to the encoding method, the first converting being capable of being omitted, a buffering step of selecting, according to the encoding method, either the intermediate bitstream or the incoming bitstream to store the selected bitstream onto a memory, and a second converting step of reading the selected bitstream from the memory to convert the read bitstream into syntax elements, the read bitstream being either the intermediate bitstream or the incoming bitstream. | 03-06-2014 |
20140064375 | MOTION VECTOR CALCULATION METHOD - When a block (MB | 03-06-2014 |
20140064376 | MOTION VECTOR CALCULATION METHOD - When a block (MB22) of which motion vector is referred to in the direct mode contains a plurality of motion vectors, 2 motion vectors MV23 and MV24, which are used for inter picture prediction of a current picture (P23) to be coded, are determined by scaling a value obtained from averaging the plurality of motion vectors or selecting one of the plurality of the motion vectors. | 03-06-2014 |
20140072046 | MOTION VECTOR CALCULATION METHOD - When a block (MB22) of which motion vector is referred to in the direct mode contains a plurality of motion vectors, 2 motion vectors MV23 and MV24, which are used for inter picture prediction of a current picture (P23) to be coded, are determined by scaling a value obtained from averaging the plurality of motion vectors or selecting one of the plurality of the motion vectors. | 03-13-2014 |
20140072047 | MOTION VECTOR CALCULATION METHOD - When a block (MB | 03-13-2014 |
20140098891 | VIDEO ENCODING DEVICE AND VIDEO ENCODING METHOD - A video encoding device, in the case where a video of the progressive format is inputted, processes a frame as a picture, in the case where a video of the interlace format is inputted, processes a field as a picture. A video encoding device generates code string by generating display control information corresponding to a format of the video and describing the display control information in the code string. The display control information includes sequence unit display control information which is commonly used in a display process of all pictures that belong to a sequence to be decoded and picture unit display control information which is individually used in a display process of a picture to be decoded. A second code string generator stores each of the sequence unit display control information and the picture unit display control information in an extended information area generated in units of pictures. | 04-10-2014 |
20140098892 | VIDEO DECODING DEVICE AND VIDEO DECODING METHOD - A video decoding device, in the case where a video of the progressive format is inputted, processes a frame as a picture, in the case where a video of the interlace format is inputted, processes a field as a picture. A video decoding device performs display control corresponding to a format of the both video by analyzing display control information in display control information analyzer. The display control information includes sequence unit display control information which is commonly used in a display process of all pictures that belong to a sequence to be decoded and picture unit display control information which is individually used in a display process of a picture to be decoded. A second code string analyzer acquires each of the sequence unit display control information and the picture unit display control information from an extended information area in units of pictures. | 04-10-2014 |
20140112592 | IMAGE CODING AND DECODING SYSTEM USING VARIABLE LENGTH CODING AND VARIABLE LENGTH DECODING - An image coding apparatus provides a run-length encoding unit RLE | 04-24-2014 |
20140133561 | PICTURE ENCODING METHOD AND PICTURE DECODING METHOD - A picture encoding method of the present invention is a picture encoding method of predictively encoding an input picture with reference to pictures stored in a picture buffer, decoding the encoded input picture, judging whether or not the decoded picture is a picture for reference and whether or not the decoded picture is a picture for output which needs to be stored until its display time, and storing, in the picture buffer, the picture for reference and the picture for output based on the determination result. | 05-15-2014 |
20140133572 | PICTURE ENCODING METHOD AND PICTURE DECODING METHOD - A picture encoding method of the present invention is a picture encoding method of predictively encoding an input picture with reference to pictures stored in a picture buffer, decoding the encoded input picture, judging whether or not the decoded picture is a picture for reference and whether or not the decoded picture is a picture for output which needs to be stored until its display time, and storing, in the picture buffer, the picture for reference and the picture for output based on the determination result. | 05-15-2014 |
20140133577 | PICTURE ENCODING METHOD AND PICTURE DECODING METHOD - A picture encoding method of the present invention is a picture encoding method of predictively encoding an input picture with reference to pictures stored in a picture buffer, decoding the encoded input picture, judging whether or not the decoded picture is a picture for reference and whether or not the decoded picture is a picture for output which needs to be stored until its display time, and storing, in the picture buffer, the picture for reference and the picture for output based on the determination result. | 05-15-2014 |
20140133578 | PICTURE ENCODING METHOD AND PICTURE DECODING METHOD - A picture encoding method of the present invention is a picture encoding method of predictively encoding an input picture with reference to pictures stored in a picture buffer, decoding the encoded input picture, judging whether or not the decoded picture is a picture for reference and whether or not the decoded picture is a picture for output which needs to be stored until its display time, and storing, in the picture buffer, the picture for reference and the picture for output based on the determination result. | 05-15-2014 |
20140286393 | PICTURE CODING METHOD AND PICTURE DECODING METHOD - In a picture coding method for generating a coded signal corresponding to each picture by coding a plurality of coded signals, a switching picture which is capable of switching a plurality of coded signals and subsequent pictures of the switching picture can refer to only a group of pictures of the same time in the coded signals. More specifically, the case where picture numbers of an adjacent picture of an S picture and the S picture are not continuous is not considered as an error. | 09-25-2014 |
20140301472 | MOTION COMPENSATION METHOD, PICTURE CODING METHOD AND PICTURE DECODING METHOD - A picture coding apparatus includes a motion vector estimation unit and a motion compensation unit. The motion vector estimation unit selects one method for deriving a motion vector of a block to be motion-compensated, depending on a motion vector of a block located in a corner of a decoded macroblock from among a group of blocks that compose the decoded macroblock corresponding to the current macroblock to be coded and determines the motion vector derived by the selected method for derivation to be a candidate of the motion vector of the current macroblock to be coded. The motion compensation unit generates a predictive image of the block to be motion-compensated based on the estimated motion vector. | 10-09-2014 |
20140321531 | VARIABLE LENGTH CODING METHOD AND VARIABLE LENGTH DECODING METHOD - A variable length coding method is comprised of: a coefficient value scanning step in which an RL sequence generation unit, a reordering unit, and a binarization unit scan coefficient values within a block in a predetermined scanning order starting at a higher-frequency component toward a lower-frequency component; and an arithmetic coding step in which an arithmetic coding unit and a table storage unit perform arithmetic coding on the absolute values of the coefficient values according to the scanning order used in the coefficient value scanning step, by switching between probability tables for use, wherein, in the arithmetic coding step, a probability table to be used is switched to another probability table in one direction, when the arithmetic-coded absolute values of the coefficient values include an absolute value exceeding a predetermined threshold value. | 10-30-2014 |
20150055713 | MOTION VECTOR CODING METHOD AND MOTION VECTOR DECODING METHOD - A motion vector coding unit executes processing including a neighboring block specification step of specifying a neighboring block which is located in the neighborhood of a current block; a judgment step of judging whether or not the neighboring block has been coded using a motion vector of another block; a prediction step of deriving a predictive motion vector of the current block using a motion vector calculated from the motion vector of the other block as a motion vector of the neighboring block; and a coding step of coding the motion vector of the current block using the predictive motion vector. | 02-26-2015 |
20150055714 | MOTION VECTOR CODING METHOD AND MOTION VECTOR DECODING METHOD - A motion vector coding unit executes processing including a neighboring block specification step of specifying a neighboring block which is located in the neighborhood of a current block; a judgment step of judging whether or not the neighboring block has been coded using a motion vector of another block; a prediction step of deriving a predictive motion vector of the current block using a motion vector calculated from the motion vector of the other block as a motion vector of the neighboring block; and a coding step of coding the motion vector of the current block using the predictive motion vector. | 02-26-2015 |
20150063458 | MOTION VECTOR CODING METHOD AND MOTION VECTOR DECODING METHOD - A motion vector coding unit executes processing including a neighboring block specification step of specifying a neighboring block which is located in the neighborhood of a current block; a judgment step of judging whether or not the neighboring block has been coded using a motion vector of another block; a prediction step of deriving a predictive motion vector of the current block using a motion vector calculated from the motion vector of the other block as a motion vector of the neighboring block; and a coding step of coding the motion vector of the current block using the predictive motion vector. | 03-05-2015 |