Patent application number | Description | Published |
20080225949 | VIDEO ENCODING METHOD, VIDEO DECODING METHOD, VIDEO ENCODING APPARATUS, VIDEO DECODING APPARATUS, VIDEO ENCODING PROGRAM, AND VIDEO DECODING PROGRAM - A video processing system is provided with video encoding apparatus | 09-18-2008 |
20090028450 | IMAGE ENCODING METHOD, IMAGE DECODING METHOD, IMAGE ENCODING APPARATUS, IMAGE DECODING APPARATUS, IMAGE ENCODING PROGRAM, AND IMAGE DECODING PROGRAM - Image encoding apparatus | 01-29-2009 |
20090310675 | VIDEO ENCODING METHOD, VIDEO DECODING METHOD, VIDEO ENCODING APPARATUS, VIDEO DECODING APPARATUS, VIDEO ENCODING PROGRAM, AND VIDEO DECODING PROGRAM - A video processing system is provided with video encoding apparatus | 12-17-2009 |
20100098174 | VIDEO ENCODING METHOD, VIDEO DECODING METHOD, VIDEO ENCODING APPARATUS, VIDEO DECODING APPARATUS, VIDEO ENCODING PROGRAM, AND VIDEO DECODING PROGRAM - A video processing system | 04-22-2010 |
20100150239 | MOVING PICTURE ENCODING APPARATUS, MOVING PICTURE ENCODING METHOD, MOVING PICTURE ENCODING PROGRAM, MOVING PICTURE DECODING APPARATUS, MOVING PICTURE DECODING METHOD, AND MOVING PICTURE DECODING PROGRAM - In a moving picture encoding apparatus | 06-17-2010 |
20110019730 | IMAGE ENCODING METHOD, IMAGE DECODING METHOD, IMAGE ENCODING APPARATUS, IMAGE DECODING APPARATUS, IMAGE ENCODING PROGRAM, AND IMAGE DECODING PROGRAM - Image encoding apparatus | 01-27-2011 |
20110019744 | VIDEO ENCODING METHOD, VIDEO DECODING METHOD, VIDEO ENCODING PROGRAM, VIDEO DECODING PROGRAM, VIDEO ENCODING APPARATUS, AND VIDEO DECODING APPARATUS - In a video encoding method according to the present invention, an encoding mode controller | 01-27-2011 |
20110019745 | IMAGE ENCODING METHOD, IMAGE DECODING METHOD, IMAGE ENCODING APPARATUS, IMAGE DECODING APPARATUS, IMAGE ENCODING PROGRAM, AND IMAGE DECODING PROGRAM - Image encoding apparatus 10 according to the present invention is an image encoding apparatus 10 for dividing image signals into blocks, performing an orthogonal transform of each block, reading resultant orthogonal transform coefficients to obtain a coefficient string, and performing entropy coding, which has block selector 14 for selecting a size of a block for the orthogonal transform, out of a plurality of blocks of different sizes; coefficient string divider 12 for, when a block of a size larger than a minimum size is selected by block selector 14, dividing a coefficient string in the block into a plurality of coefficient strings of a length equal to that of a coefficient string in a block of the minimum size; and encoder 13 for performing entropy coding adapted to the coefficient string in the block of the minimum size. This substantializes the image encoding apparatus capable of achieving efficient entropy coding in the orthogonal transform of variable sizes. | 01-27-2011 |
20110097005 | IMAGE ENCODING METHOD, IMAGE DECODING METHOD, IMAGE ENCODING APPARATUS, IMAGE DECODING APPARATUS, IMAGE ENCODING PROGRAM, AND IMAGE DECODING PROGRAM - An image decoding method, apparatus and program for decoding coded picture data is disclosed. In the method, apparatus and program, the coded picture data is entropy-decoded to derive four transform coefficient strings each comprising entropy-decoded sixteen (16) transform coefficients. The four transform coefficient strings are combined into an 8×8 block of entropy-decoded sixty four (64) transform coefficients by de-interleaving the four strings in such a manner as to select a lower frequency transform coefficient alternately from the four strings and arrange it in the 8×8 block in an order of a low frequency to a high frequency. An inverse orthogonal transform is then performed on the 8×8 block of the entropy-decoded sixty four (64) transform coefficients. | 04-28-2011 |
20110286679 | IMAGE ENCODING/DECODING SYSTEM - A picture prediction encoding device includes: a region division unit for dividing an input picture into a plurality of blocks; a prediction signal generation unit for generating a prediction signal with respect to a pixel signal that is included in a subject block to be processed among the blocks; a residual signal generation unit for generating a residual signal between the pixel signal of the subject block and the generated prediction signal; a signal encoding unit for generating a compressed signal by encoding the residual signal; and a storage unit for decompressing the compressed signal and storing the decompressed signal as a reproduced pixel signal. The prediction signal generation unit is configured to sub-divide the subject block into a plurality of small regions, at least one of the small regions is non-square, and a length of a first side of the non-square small region is longer than a length of a second side that is different from the first side. | 11-24-2011 |
20110299788 | IMAGE ENCODING AND DECODING DEVICE - A picture encoding device ( | 12-08-2011 |
20120045141 | IMAGE ENCODING APPARATUS AND DECODING APPARATUS - A picture encoding apparatus divides an input picture into a plurality of regions and produces quantized transform coefficients of one of the regions. A zero/non-zero coefficient information encoding unit included in the picture encoding apparatus encodes information representing the respective quantized transform coefficients of the one region as either a zero coefficient or a non-zero coefficient. A non-zero coefficient encoding unit included in the picture encoding apparatus encodes non-zero quantized transform coefficient included among the quantized transform coefficients of the one region. The non-zero coefficient encoding unit is configured to select, from a probability model composed of a plurality of estimated probabilities, an estimated probability used to encode an absolute value of a next non-zero quantized transform coefficient of the one region. The estimated probability is selected from the probability model based on a quantity of already encoded non-zero quantized transform coefficients of the one region. | 02-23-2012 |
20130114713 | LOW-COMPLEXITY INTRA PREDICTION FOR VIDEO CODING - The present invention provides a unique intra prediction process which improves the efficiency of video coding. H.264/AVC uses reference pixels in a horizontal boundary located immediately above a target block to be predicted and reference pixels in a vertical boundary located immediately left of the target block. In the present invention, at least some of one of an array of horizontal boundary pixels and an array of vertical boundary pixels are retrieved. Then, the retrieved pixels are added to the other boundary pixels to extend the array thereof. Intra prediction is performed, based solely on the extended array of boundary pixels. | 05-09-2013 |
20130216148 | IMAGE PREDICTIVE ENCODING AND DECODING SYSTEM - In image predictive encoding according to an embodiment, one or more motion information sets are derived from plural pieces of motion information stored in a computer readable storage medium. Each of the one or more information sets includes two pieces of motion information between which any one of constituent elements differ in value. A predicted signal of a target region in a picture is generated by motion compensation, using two pieces of motion information in a motion information set selected from the one or more motion information sets. The two pieces of motion information in the selected motion information set are stored in the computer readable storage medium, and are used for generation of a predicted signal of another region. | 08-22-2013 |
20130301708 | IMAGE PREDICTIVE CODING DEVICE, IMAGE PREDICTIVE CODING METHOD, IMAGE PREDICTIVE CODING PROGRAM, IMAGE PREDICTIVE DECODING DEVICE, IMAGE PREDICTIVE DECODING METHOD, AND IMAGE PREDICTIVE DECODING PROGRAM - An image predictive encoding device of an embodiment obtains motion information, for acquiring from a previously-reconstructed reference picture, a signal highly correlated with a pixel signal of a target region serving as an encoding target. The motion information contains prediction modes of candidates for selection, the prediction modes being a uni-prediction using one reference picture and a bi-prediction using two reference pictures. When a prediction mode that is selected from the candidates of the two prediction modes is the uni-prediction, the motion information is obtained from one reference picture set in a single reference picture list used for uni-prediction in which frame numbers of a plurality of reference pictures are registered. At least the prediction mode is encoded as the motion information. | 11-14-2013 |
20130301724 | Image Predict Coding Method, Image Predict Coding Device, Image Predict Coding Program, Image Predict Decoding Method, Image Predict Decoding Device, and Image Predict Decoding Program - A predictive coding system performs predictive encoding by determination of an optimum prediction mode from prediction methods for a pixel signal of a target block. A predicted signal is generated according to the determined mode, and a residual signal is determined. The residual signal and the optimum prediction mode are encoded to generate a compressed signal, which is decoded. The decoded signal is stored as a reconstructed picture sample. During encoding, a candidate prediction mode list is generated that contains elements of optimum prediction modes of previously-reproduced blocks neighboring the target block. A flag indicating whether the list contains an element corresponding to the optimum prediction mode is encoded, and an index to the corresponding element is encoded if the corresponding element is included in the list. The optimum prediction mode can be encoded based on identifying the elements in the list, unless no corresponding element appears on the list. | 11-14-2013 |
20140369616 | IMAGE PREDICTIVE ENCODING AND DECODING SYSTEM - In image predictive encoding according to an embodiment, one or more motion information sets are derived from plural pieces of motion information stored in a computer readable storage medium. Each of the one or more information sets includes two pieces of motion information between which any one of constituent elements differ in value. A predicted signal of a target region in a picture is generated by motion compensation, using two pieces of motion information in a motion information set selected from the one or more motion information sets. The two pieces of motion information in the selected motion information set are stored in the computer readable storage medium, and are used for generation of a predicted signal of another region. | 12-18-2014 |