Patent application number | Description | Published |
20120195515 | IMAGE ENCODING DEVICE AND IMAGE DECODING DEVICE - Disclosed is an image encoding device that aims to increase encoding efficiency and to increase mode estimation accuracy using the characteristics of transformation coefficients. In response to an assessment value calculated on the basis of the characteristics of transformation coefficients, the range of estimated modes and selectable modes is limited, a mode that minimizes encoding cost is selected from among predetermined modes within the limited range of modes, when the number of the aforementioned limited modes is one, a flag for mode identification is not encoded, and when there are a plurality of modes, the aforementioned selected mode is encoded. As a result, the amount of encoding cost of the mode-identifying flag is decreased and encoding can be performed with a high encoding efficiency, mode estimation accuracy is increased, and furthermore, the amount of flag encoding is decreased and encoding efficiency is increased. | 08-02-2012 |
20120207221 | VIDEO CODING DEVICE AND VIDEO DECODING DEVICE - The present invention relates to a device including (i) a spatial-direction prediction vector generating section ( | 08-16-2012 |
20120213288 | VIDEO ENCODING DEVICE, VIDEO DECODING DEVICE, AND DATA STRUCTURE - As a prediction vector is set a prediction vector selected from one of a first prediction vector candidate and a prediction vector candidate in accordance with an encoding cost. The prediction vector candidate is a prediction vector candidate selected from one of a second prediction vector candidate and a third prediction vector candidate in accordance with a predictive accuracy of the third prediction vector candidate. The first prediction vector candidate is a median of motion vectors assigned to respective partitions surrounding a target partition. The second prediction vector candidate is a motion vector assigned to a partition adjacent to a left side of the target partition. The third prediction vector candidate is a motion vector assigned to a collocate partition identical in location to the target partition of a decoded frame. | 08-23-2012 |
20120219232 | IMAGE ENCODING APPARATUS, IMAGE DECODING APPARATUS, AND DATA STRUCTURE OF ENCODED DATA - An image encoding apparatus of the present invention includes a TM prediction section ( | 08-30-2012 |
20120251012 | IMAGE FILTER, ENCODING DEVICE, DECODING DEVICE, AND DATA STRUCTURE - An image filter ( | 10-04-2012 |
20120281749 | ENCODER, DECODER, AND DATA CONFIGURATION - A moving image encoder ( | 11-08-2012 |
20120300849 | ENCODER APPARATUS, DECODER APPARATUS, AND DATA STRUCTURE - An encoding device of the present embodiment includes: an adaptive filter ( | 11-29-2012 |
20130058410 | ENCODING DEVICE, DECODING DEVICE, AND DATA STRUCTURE - A video encoding device includes a side information determination section and a side information encoding section. The side information determination section sets a quantization parameter for each macroblock in such a manner that a difference between quantization parameters for each pair of macroblocks with successive encoding orders is equal to one of n difference values, and transforms the difference into one of n indices with respect to each pair. The side information encoding section generates a binary sequence having a length corresponding to the size of the absolute value of the index. The total of absolute values of the n indices is smaller than the total of absolute values of the n difference values. | 03-07-2013 |
20130058417 | PREDICTION IMAGE GENERATION DEVICE, MOVING IMAGE DECODING DEVICE, AND MOVING IMAGE CODING DEVICE - An inter-predicted image generation section ( | 03-07-2013 |
20130077884 | FILTER DEVICE, IMAGE DECODING DEVICE, IMAGE ENCODING DEVICE, AND FILTER PARAMETER DATA STRUCTURE - A loop filter section according to an embodiment of the present invention includes: a BF section selectively acting on a block boundary of an image processed block by block; and an adaptive filter section including a first linear filter section that acts on an input image to be supplied to the BF section and a second linear filter section that acts on an output image of the BF section. The adaptive filter section performs addition of an output image of the first linear filter section and an output image of the second linear filter section to output a result of the addition. | 03-28-2013 |
20130114712 | DECODING DEVICE AND CODING DEVICE - A moving image decoder ( | 05-09-2013 |
20130136371 | IMAGE FILTER DEVICE, DECODING APPARATUS, ENCODING APPARATUS, AND DATA STRUCTURE - An adaptive filter includes: an edge direction detection section which discriminates directionality of an input image in each of a plurality of unit regions constituting the input image; a region classification section which classifies the each of the plurality of unit regions into one of a plurality of unit region groups in accordance with to which of a plurality of predetermined groups the directionality of the input image in the each of the plurality of unit regions belongs, the directionality having been discriminated by the edge direction detection section; and a filter process section which calculates a pixel value of the each pixel of an output image by use of a filter coefficient group optimized for a unit region group to which a unit region including the each pixel belongs. | 05-30-2013 |
20130251051 | IMAGE FILTER DEVICE, DECODING DEVICE, ENCODING DEVICE, AND DATA STRUCTURE - A loop filter ( | 09-26-2013 |
20140140416 | OFFSET DECODING DEVICE, OFFSET CODING DEVICE, IMAGE FILTERING DEVICE, AND DATA STRUCTURE - An adaptive offset filter ( | 05-22-2014 |
20140307801 | ARITHMETIC DECODING DEVICE, IMAGE DECODING DEVICE, ARITHMETIC CODING DEVICE, IMAGE CODING DEVICE, AND ARITHMETIC DECODING METHOD - The amount of processing is reduced with high coding efficiency maintained. There is provided an arithmetic decoding device including syntax decoding means for decoding each of at least a first syntax element and a second syntax element indicating a transform coefficient using arithmetic decoding with a context or arithmetic decoding without a context. The syntax decoding means performs decoding that at least includes not decoding the first syntax element and decoding the second syntax element using the arithmetic decoding without a context, and decoding the first syntax element using the arithmetic decoding with a context and decoding the second syntax element using the arithmetic decoding without a context. | 10-16-2014 |
20140348247 | ARITHMETIC DECODING DEVICE, IMAGE DECODING DEVICE, AND ARITHMETIC CODING DEVICE - To reduce the amount of processing related to coding and decoding of transform coefficients, a sub-block coefficient presence/absence flag indicating whether or not at least one non-zero transform coefficient is included is decoded for each of two or more sub-blocks obtained by dividing a unit region, and a context index of a target sub-block is derived on the basis of transform coefficient presence/absence flags each indicating whether or not a transform coefficient is 0. In accordance with the sub-block coefficient presence/absence flags of adjacent sub-blocks that are adjacent to the target sub-block, the context index of the target sub-block is derived. | 11-27-2014 |