Patent application number | Description | Published |
20080212675 | Motion Vector Estimating Device, and Motion Vector Estimating Method - To provide a motion vector estimating device which is capable of calculating the optimum motion vector by a trade-off between the bit rate of a motion vector and a differential amount, and estimating a motion vector in a pipeline structure at high speed, a motion vector estimating method which enables the same. The motion vector estimating device ( | 09-04-2008 |
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 |
20100027964 | STREAM GENERATION APPARATUS, STREAM GENERATION METHOD, CODING APPARATUS, CODING METHOD, RECORDING MEDIUM AND PROGRAM THEREOF - A stream generation apparatus of the present invention is a stream generation apparatus which generates a stream including coded pictures and a command for managing a buffer which holds a decoded picture, the command being added to one of the coded pictures as a reference picture. It includes a judging unit which judges whether or not the coded picture to which the command is added is skipped at the time of trick-play, an adding unit which adds, in the case where the coded picture is judged to be skipped, repetition information indicating the same contents as the command to another coded picture that follows, in decoding order, the coded picture judged to be skipped and that is not skipped at the time of the trick-play, and a generating unit which generates the stream including the coded pictures, the command and the repetition information. | 02-04-2010 |
20100027971 | MOVING IMAGE ENCODING METHOD AND APPARATUS - A moving image encoding method of encoding a moving image while switching between variable-length encoding schemes. In this method, a continuous unit to be continuously reproduced is determined (S | 02-04-2010 |
20100046610 | IMAGE ENCODING DEVICE, AND IMAGE DECODING DEVICE - The image encoding device of the present invention is an image encoding device that encodes a still image and a moving image, the device including: a determination unit that determines a first upper limit and a second upper limit, the first upper limit indicating an upper limit of the amount of code per picture of still images, and the second upper limit indicating an upper limit of the amount of code per picture in a moving image; an encoding unit that encodes each of the still images and the moving image in such a manner that the first and second upper limits are satisfied; a multiplexing unit that generates a stream by multiplexing the encoded still images and the encoded moving image; a generation unit that generates management information that identifies the first and second upper limits; and an output unit that outputs the stream and the management information. | 02-25-2010 |
20100046611 | IMAGE ENCODING DEVICE, AND IMAGE DECODING DEVICE - The image encoding device of the present invention is an image encoding device that encodes a still image and a moving image, the device including: a determination unit that determines a first upper limit and a second upper limit, the first upper limit indicating an upper limit of the amount of code per picture of still images, and the second upper limit indicating an upper limit of the amount of code per picture in a moving image; an encoding unit that encodes each of the still images and the moving image in such a manner that the first and second upper limits are satisfied; a multiplexing unit that generates a stream by multiplexing the encoded still images and the encoded moving image; a generation unit that generates management information that identifies the first and second upper limits; and an output unit that outputs the stream and the management information. | 02-25-2010 |
20100046922 | STREAM GENERATION APPARATUS, STREAM GENERATION METHOD, CODING APPARATUS, CODING METHOD, RECORDING MEDIUM AND PROGRAM THEREOF - A stream generation apparatus of the present invention is a stream generation apparatus which generates a stream including coded pictures and a command for managing a buffer which holds a decoded picture, the command being added to one of the coded pictures as a reference picture. It includes a judging unit which judges whether or not the coded picture to which the command is added is skipped at the time of trick-play, an adding unit which adds, in the case where the coded picture is judged to be skipped, repetition information indicating the same contents as the command to another coded picture that follows, in decoding order, the coded picture judged to be skipped and that is not skipped at the time of the trick-play, and a generating unit which generates the stream including the coded pictures, the command and the repetition information. | 02-25-2010 |
20100054330 | PICTURE CODING METHOD, PICTURE DECODING METHOD, PICTURE CODING APPARATUS, PICTURE DECODING APPARATUS, AND PROGRAM THEREOF - The picture decoding method according to the present invention is a decoding method for decoding coded pictures by inverse quantization and inverse orthogonal transformation, in which a quantization matrix which defines a scaling ratio of a quantization step for each component is multiplied by a multiplier, which is a coefficient for frequency transformation or a quantization step, and also, a result of the multiplication is multiplied by a quantized value, as a process of inverse quantization. | 03-04-2010 |
20100080478 | IMAGE CODING APPARATUS AND IMAGE CODING METHOD - An image coding apparatus is mainly characterized by (i) dividing each of fields into an I-slice and P-slices, and determining the position of the I-slice in each of a predetermined number of first fields such that a current I-slice is sequentially shifted from the first end of a starting first field to the second end of an ending first field and such that a similar shift is repeated for each predetermined number of first fields, when a current field is a first field, and further (ii) determining, when the current field is the first field, that each P-slice located closer to the first end than a corresponding I-slice can refer to only a first field coded immediately before, and determining, when the current field is the second field, that at least one second field in the predetermined number of fields can refer to only a first field coded immediately before. | 04-01-2010 |
20100150240 | REFERENCE PICTURE SELECTION METHOD AND APPARATUS - The reference picture selection method according to the present invention is a method for selecting a reference picture for a current bottom field, and includes: predicting a degree of a motion of the current bottom field using a specific field which precedes the current bottom field in coding order; setting reference picture candidates suitable for coding the current bottom field based on the predicted degree of motion; and selecting a reference picture of the current bottom field among the set reference picture candidates. | 06-17-2010 |
20100165069 | IMAGE CODEC APPARATUS - Provided is an image codec apparatus that allows a user to check his own-image properly while feeling a strong sense of presence. The image codec apparatus ( | 07-01-2010 |
20100290523 | MOVING IMAGE ENCODING METHOD AND APPARATUS - A moving image encoding method of encoding a moving image while switching between variable-length encoding schemes. In this method, a continuous unit to be continuously reproduced is determined (S | 11-18-2010 |
20100290758 | MOVING IMAGE ENCODING METHOD AND APPARATUS - A moving image encoding method of encoding a moving image while switching between variable-length encoding schemes. In this method, a continuous unit to be continuously reproduced is determined (S | 11-18-2010 |
20100303153 | PICTURE CODING METHOD AND PICTURE CODING APPARATUS - A picture coding apparatus that reduces a computational complexity, improves a compression rate, and reduces frequency of stream transmission loss without interfering with pipelining and paralleling includes: a dividing unit that divides a picture into an I-slice and a P slice, each of the I-slice and P slice including blocks; and a coding unit that codes each slice per block so as to code temporally consecutive pictures, wherein the dividing unit changes a position of the I-slice in each of the temporally consecutive pictures so that positions of I-slices circulate in a to-be-determined number of pictures among the temporally consecutive pictures, and divides each of the temporally consecutive pictures so that a sum of the number of blocks included in the I-slice and the number of blocks included in one or more P slices between the I-slice and an I-slice subsequent to the I-slice becomes a predetermined value. | 12-02-2010 |
20110122943 | MOVING PICTURE CODING METHOD AND MOVING PICTURE CODING DEVICE - A moving picture coding device according to the present invention includes: a QP deriving unit ( | 05-26-2011 |
20110164679 | MOVING IMAGE CODING METHOD, MOVING IMAGE CODING APPARATUS, PROGRAM, AND INTEGRATED CIRCUIT - The moving image coding method includes: changing at least one of a resolution and a frame rate of an input image, according to a degree of difficulty in coding the input image, and outputting an image to be coded (S | 07-07-2011 |
20110205328 | VIDEO CONFERENCING SYSTEM, VIDEO CONFERENCING APPARATUS, VIDEO CONFERENCING CONTROL METHOD, AND VIDEO CONFERENCING CONTROL PROGRAM - To provide a video conferencing system that a user can continue to use even when the user leaves for a different location. The video conferencing system includes: a takeover information generation unit ( | 08-25-2011 |
20120275518 | MOVING PICTURE CODING METHOD, APPARATUS, PROGRAM, AND INTEGRATED CIRCUIT - A moving picture coding method in which the position of a current I-slice for a current picture is shifted in the vertical direction of the current picture, and which includes (i) performing inter coding on a first P-slice without using a motion vector (Sa | 11-01-2012 |
20130058409 | MOVING PICTURE CODING APPARATUS AND MOVING PICTURE DECODING APPARATUS - A moving picture coding apparatus includes: a coding unit which codes pictures with reference to decoded pictures of previously coded pictures to generate coded data of the pictures; a transmission unit which transmits the coded data to a moving picture decoding apparatus; and a control unit. When an acknowledgement signal indicating successful receiving of coded data of all of a predetermined number of consecutive pictures is received from a receiver apparatus, the control unit stores, as a key picture in a memory, a decoded picture of a current picture being coded when the acknowledgement signal is received. When a negative-acknowledgement signal indicating unsuccessful receiving of coded data of any of the consecutive pictures is received, the control unit causes the coding unit to code the current picture with reference to a key picture stored in the memory. | 03-07-2013 |
20130076979 | VIDEO TRANSMITTING APPARATUS, VIDEO TRANSMITTING METHOD, VIDEO RECEIVING APPARATUS, VIDEO RECEIVING METHOD, AND VIDEO TRANSMITTING-RECEIVING APPARATUS - A video transmitting-receiving apparatus has a simple configuration to transmit and receive high-quality video via two-way communication between 50 Hz and 60 Hz regions. A 50 Hz-60 Hz arrangement unit determines whether an operating frequency of a receiving-side video transmitting-receiving apparatus is 50 Hz or 60 Hz from received information. The 50 Hz-60 Hz arrangement unit obtains an operating frequency of a transmitting-side transmitting-receiving apparatus from a display unit (or an input unit) and determines whether the transmitting-side frequency is the same as the receiving-side frequency. When the frequencies are the same, a coding unit codes interlaced video outputted from the input unit. When the frequencies are different, the coding unit codes progressive video obtained by IP conversion of the input unit and generates a progressive video stream. A transmission unit transmits, to the receiving side, the coded stream and information indicating the transmitting-side frequency. | 03-28-2013 |
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 |
20130100248 | VIDEO TRANSMITTING APPARATUS AND VIDEO TRANSMITTING METHOD - A video transmitting apparatus includes: a video coder configured to compression-code a video signal to generate coded parameter information and coded pixel data; a supplemental information coder configured to code supplemental information for controlling display of a video to generate coded supplemental information; a coding unit multiplexing unit configured to output, in order, the coded parameter information and the coded supplemental information; and a stream transmitting unit configured to generate a coded stream which includes a packet including the coded parameter information and the coded supplemental information, using the data output from the coding unit multiplexing unit, and transmits the generated coded stream. | 04-25-2013 |
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 |
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 |
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 |
20140010298 | MOVING PICTURE PREDICTION METHOD, MOVING PICTURE CODING METHOD AND APPARATUS, AND MOVING PICTURE DECODING METHOD AND APPARATUS - An image decoding method is provided which includes a time information determination step of determining time information of a current picture, a first reference picture referred to by the current picture and a second reference picture referred to by the current picture; a scaling parameter calculation step of calculating a scaling parameter based on a time distance between the first reference picture and a second reference picture; a weighting coefficient determination step of determining two weighting coefficients based on the scaling parameter; a predictive pixel value generation step of generating a predictive pixel value of the current picture by scaling a pixel value of the first reference picture and a pixel value of the second reference picture using the two weighting coefficients determined in the weighting coefficient determination step; and a decoding step of decoding the current picture using the predictive pixel value. | 01-09-2014 |
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 |
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 |
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 |
20140126632 | PICTURE CODING METHOD AND PICTURE DECODING METHOD - The picture coding method of the present invention is a picture coding method for coding a picture on a block-by-block basis, comprising: a selection step of selecting one of at least two sizes as a size of a block on which orthogonal transformation should be performed; a transformation step of performing orthogonal transformation on a block having the selected size; a coding step of coding data of said block obtained in the transformation step; and a generation step of generating a coded stream that includes the coded data of the block and size information concerning the size selected in the selection step, wherein the size information indicates whether or not the size is a fixed block size within a predetermined section in the coded stream, and the predetermined section is one of a sequence, a group of pictures, a picture, a slice, and a macroblock. | 05-08-2014 |
20140133549 | PICTURE CODING METHOD, PICTURE DECODING METHOD, PICTURE CODING APPARATUS, PICTURE DECODING APPARATUS, AND PROGRAM THEREOF - A picture coding method of the present invention codes a picture signal and a ratio of a number of luminance pixels and a number of chrominance pixels for the picture signal, and then one coding method out of at least two coding methods is selected depending on the ratio. Next, data related to a picture size is coded in accordance with the selected coding method. The data related to the picture size indicates a size of the picture corresponding to the picture signal or an output area, which is a pixel area to be outputted in decoding in a whole pixel area coded in the picture signal coding. | 05-15-2014 |
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 |
20140177705 | PICTURE CODING AND DECODING APPARATUSES AND METHODS PERFORMING VARIABLE LENGTH CODING AND DECODING ON A SLICE HEADER STREAM AND ARITHMETIC CODING AND DECODING ON A SLICE DATA STREAM - A frame coding unit generates individual picture signal information from a moving picture signal, and outputs a frame code value which is a numeric value to be obtained as a result of coding picture signal information of each frame. A variable length coding unit decomposes the frame code value into unit frame code values which are basic units of coding, converts the unit frame code values into frame code words using only a single code table, and constructs a frame stream by combining the converted frame code words. A multiplexing unit multiplexes a header stream which is constructed through a method equivalent to a conventional method and the frame stream, and constructs a picture coded signal. | 06-26-2014 |