Patent application number | Description | Published |
20080310511 | Moving picture signal coding method, decoding method, coding apparatus, and decoding apparatus - Moving picture motion compensation coding/decoding predicts a motion vector in a coding block from a motion vector of the adjacent position and codes a differential motion vector calculated from the motion vector to be coded and its prediction motion vector. The coding is performed by switching the coding accuracy between a coding accuracy of the differential motion vector ( | 12-18-2008 |
20090116759 | VIDEO ENCODING DEVICE, VIDEO ENCODING METHOD, VIDEO ENCODING PROGRAM, VIDEO DECODING DEVICE, VIDEO DECODING METHOD, AND VIDEO DECODING PROGRAM - A video encoding device including a region division section for dividing a frame image constituting video data into a plurality of regions as encoding target regions, an encoding section for encoding an image of each region, an inverse transformation section and an addition section for generating reproduced image of the encoded image, a storage section for storing reproduced images, a prediction generation section for searching a region which is highly correlated to a reproduced image of a template region, which is adjacent to the region of the encoding target image in a predetermined positional relationship and is a part of the reproduced image, from the reproduced image, and determining a prediction signal based on the searched region and the above-mentioned positional relationship, and a subtraction section for generating a difference signal between the prediction signal and the encoding target image as a signal for encoding. | 05-07-2009 |
20090116760 | 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 - A block divider divides an input image into a plurality of regions. A prediction signal generator generates a prediction signal for the pixel signal contained in an object region, which is the object of processing, among the plurality of regions, and generates a prediction signal by using a texture synthesis method for forming a texture signal for the object region. A subtracter determines a residual signal between the pixel signal of the object region and the prediction signal, and a transformer and quantizer encode the residual signal to generate a compressed signal. | 05-07-2009 |
20100091846 | IMAGE PREDICTION/ENCODING DEVICE, IMAGE PREDICTION/ENCODING METHOD, IMAGE PREDICTION/ENCODING PROGRAM, IMAGE PREDICTION/DECODING DEVICE, IMAGE PREDICTION/DECODING METHOD, AND IMAGE PREDICTION DECODING PROGRAM - An objective is to provide an image predictive encoding device, image predictive encoding method, image predictive encoding program, image predictive decoding device, image predictive decoding method, and image predictive decoding program for selecting a plurality of candidate prediction signals, without increase in information amount. A weighting unit | 04-15-2010 |
20110261886 | IMAGE PREDICTION ENCODING DEVICE, IMAGE PREDICTION ENCODING METHOD, IMAGE PREDICTION ENCODING PROGRAM, IMAGE PREDICTION DECODING DEVICE, IMAGE PREDICTION DECODING METHOD, AND IMAGE PREDICTION DECODING PROGRAM - An image prediction encoding device | 10-27-2011 |
20110280310 | MOVING PICTURE ENCODING METHOD AND DECODING METHOD - A moving picture decoding method, which generates a predicted image using information on motion vectors and information on reference images, the moving picture decoding method having multiple prediction modes including a mode without motion vector decoding, including: a step of selecting a frame(s) to be referenced to in the prediction of each prediction direction in the prediction mode from among multiple candidate reference frames, and a step of selecting motion vector information used in the prediction mode, wherein said step of selecting motion vector information is performed based on whether candidate blocks including the block adjacent to the left side of or the upper side of a current block have a motion vector; and moving picture decoding is performed by generating said predicted image using the information on said selected reference frame and the information on said selected motion vectors in said prediction mode. | 11-17-2011 |
20110293008 | Moving Picture Encoding Method and Decoding Method - A moving picture decoding method including a prediction mode, including: in said prediction mode, in which prediction mode motion vector information of a current block in a current frame is not transmitted from an encoding side; selecting, from among multiple candidate reference frames, a frame(s) to be referenced to in the prediction mode; determining motion vector information to be used in the prediction mode, and performing prediction processing using the selected reference frame and the determined motion vector, wherein when candidate blocks within a current frame and adjacent to a current block include blocks that use forward reference frames and blocks that use backward reference frames, a forward reference frame having a smallest index number is selected as the forward reference frame for the current block from the forward reference frames that said blocks using the forward reference frames have, and a backward reference frame having a smallest index number is selected as the backward reference frame for the current block from the backward reference frames that said blocks using the backward reference frames have. | 12-01-2011 |
20110293016 | Moving Picture Encoding Method And Decoding Method - A moving picture decoding method including a prediction mode, including: in said prediction mode, in which prediction mode motion vector information of a current block in a current frame is not transmitted from an encoding side: selecting, from among multiple candidate reference frames, a frame(s) to be referenced to in the prediction mode; determining motion vector information to be used in the prediction mode; and performing prediction processing using the selected reference frame and the determined motion vector, wherein-when candidate blocks within a current frame and adjacent to a current block include blocks that use forward reference frames, a forward reference frame having a smallest index number is selected as the forward reference frame for the current block from the forward reference frames that said blocks using the forward reference frames have, wherein determining motion vector information to be used for the current block in the prediction mode, based on availability of motion vector(s) of predetermined adjacent blocks and the current block belonging to the current picture and the predetermined adjacent blocks are decoded earlier than the current block. | 12-01-2011 |
20110293017 | Moving Picture Encoding Method And Decoding Method - A moving picture decoding method including a prediction mode, including: in said prediction mode, in which prediction mode motion vector information of a current block in a current frame is not transmitted from an encoding side: selecting, from among multiple candidate reference frames, a frame(s) to be referenced to in the prediction mode; and determining motion vector information to be used in the prediction mode; and performing prediction processing using the selected reference frame and the determined motion vector, wherein when candidate blocks within a current frame and adjacent to a current block include blocks that use backward reference frames, a backward reference frame having a smallest index number is selected as the backward reference frame for the current block from the backward reference frames that said blocks using the backward reference frames have, wherein determining motion vector information to be used for the current block in the prediction mode, based on availability of motion vector(s) of predetermined adjacent blocks and the current block belonging to the current picture and the predetermined adjacent blocks are decoded earlier than the current block. | 12-01-2011 |
20110299600 | Moving Picture Encoding Method And Decoding Method - A moving picture decoding method including a prediction mode, in which prediction mode motion vector information of a current block in a current frame is not transmitted from an encoding side, including: in said prediction mode: selecting one reference frame from among a plurality of candidate reference frames including: a reference frame referenced by one or a plurality of adjacent blocks within a current frame and adjacent to a current block; and a prescribed reference frame not based on the reference frame referenced by the adjacent blocks, as the reference frame to be used in the prediction mode; determining a motion vector to be used in the prediction mode; and performing prediction processing using the selected reference frame and the determined motion vector, wherein determining motion vector information to be used for the current block in the prediction mode, based on availability of motion vector(s) of predetermined adjacent blocks and the current block belonging to the current picture and the predetermined adjacent blocks are decoded earlier than the current block. | 12-08-2011 |
20120281763 | Moving Picture Encoding Method and Decoding Method - Moving picture decoding arrangements where the motion vector for the target block of decoding is calculated on a decoding side. A reference frame is selected dependent on whether candidate blocks adjacent to the target block of decoding have a motion vector for forward prediction or backward prediction. In calculating the motion vector, a median of motion vectors of the adjacent blocks is set as the motion vector. Decoding of a moving picture is performed by using information of the selected reference frame and the calculated motion vector. | 11-08-2012 |
20130003854 | METHOD, APPARATUS AND PROGRAM FOR EFFICIENT GENERATION OF PREDICTION SIGNALS - A block divider divides an input image into a plurality of regions. A prediction signal generator generates a prediction signal for the pixel signal contained in an object region, which is the object of processing, among the plurality of regions, and generates a prediction signal by using a texture synthesis method for forming a texture signal for the object region. A subtracter determines a residual signal between the pixel signal of the object region and the prediction signal, and a transformer and a quantizer encode the residual signal to generate a compressed signal. | 01-03-2013 |
20140286425 | IMAGE DECODING DEVICE AND METHOD THEREOF USING INTER-CODED PREDICTIVE ENCODING CODE - An image encoding device and corresponding decoding device are disclosed for achieving a high rate of compression. The encoding device includes an image conversion module that converts the direction of the images using right-left symmetry mode convention or up-down symmetry mode conversion. Encoding modules are used to encode both the unconverted and converted images. A mode selector module compares the quantity of codes in the encoded unconverted images and the quantity of codes in the encoded converted images, and selects codes that are smaller in the quantity of codes for output. | 09-25-2014 |
20150077636 | IMAGE DECODING DEVICE AND METHOD THEREOF USING INTER-CODED PREDICTIVE ENCODING CODE - An image encoding device and corresponding decoding device are disclosed for achieving a high rate of compression. The encoding device includes an image conversion module that converts the direction of the images using right-left symmetry mode convention or up-down symmetry mode conversion. Encoding modules are used to encode both the unconverted and converted images. A mode selector module compares the quantity of codes in the encoded unconverted images and the quantity of codes in the encoded converted images, and selects codes that are smaller in the quantity of codes for output. | 03-19-2015 |