Patent application number | Description | Published |
20090052536 | Video Decoding Device, Decoded Image Recording Device, Their Method and Program - [Problems] To provide a video decoding device and a decoded image recording device, having a recompression unit capable of suppressing propagation of distortion caused by temporal and spatial recompression, that is, image deterioration, and their methods and programs. | 02-26-2009 |
20130121408 | VIDEO IMAGE ENCODING DEVICE AND VIDEO IMAGE DECODING DEVICE - When injecting pseudo random noise to an area centered on a block boundary, a video encoding device and a video decoding device prevent injection of pseudo random noise to an area including a reference image for subsequent planar mode filtering, in order to suppress linear artifacts. The video encoding device includes: an inverse quantization unit for inverse-quantizing a quantization index to obtain a quantization representative value; an inverse frequency transform unit for inverse-transforming the quantization representative value obtained by the inverse quantization unit, to obtain a reconstructed image block; and an adaptive distortion removal filter unit for injecting pseudo random noise to an area centered on a boundary of the reconstructed image block, wherein the adaptive distortion removal filter unit does not inject pseudo random noise to an area including a reference image for planar mode filtering. | 05-16-2013 |
20130136177 | VIDEO DECODING APPARATUS, VIDEO CODING APPARATUS, VIDEO DECODING METHOD, VIDEO CODING METHOD, AND PROGRAM - In the present invention, reconstructed images for prediction are stored in uncompressed reference picture memory and compressed reference picture memory. A video decoder stores in uncompressed reference picture memory a reconstructed image of a frame to be decoded which has been generated on the basis of a prediction, and among reconstructed images which have been stored in the uncompressed reference picture memory, compresses a reconstructed image that will not be used for prediction of the frame to be decoded and stores the image in the compressed reference picture memory. Using the reconstructed images which are stored in the uncompressed reference picture memory and the compressed reference picture memory, the video bitstream is decoded into a video. | 05-30-2013 |
20130170548 | VIDEO ENCODING DEVICE, VIDEO DECODING DEVICE, VIDEO ENCODING METHOD, VIDEO DECODING METHOD AND PROGRAM - The present invention is a video encoding device having: video encoder for encoding an inputted video on the basis of a prediction; reference picture compressor for compressing a reference picture used for the prediction; storage for storing the compressed reference picture; reference picture decompressor for decompressing the compressed reference picture stored in the storage; compression and decompression controller for controlling the reference picture compressor and the reference picture decompressor on the basis of predetermined control information; quantized information encoder for encoding a portion of the control information of the compression and decompression control means by means of a predetermined method and for generating a quantized information bitstream; and multiplexer for multiplexing the video bitstream from the video encoder, at least a portion of the control information excluding the portion that was encoded by means of the quantized information encoder, and the quantized information bitstream. | 07-04-2013 |
Patent application number | Description | Published |
20120307898 | VIDEO ENCODING DEVICE AND VIDEO DECODING DEVICE - To efficiently reduce contour and stair-step artifacts. | 12-06-2012 |
20130101037 | VIDEO ENCODING DEVICE, VIDEO DECODING DEVICE, VIDEO ENCODING METHOD, VIDEO DECODING METHOD, AND PROGRAM - A video encoding device includes: pixel bit length increasing means for increasing a pixel bit length of an input image based on pixel bit length increase information; transform means for transforming output data of the pixel bit length increasing means; entropy encoding means for entropy-encoding output data of the transform means; non-compression encoding means for non-compression-encoding input data; multiplexed data selection means for selecting output data of the entropy encoding means or output data of the non-compression encoding means; and multiplexing means for multiplexing the pixel bit length increase information in a bitstream, wherein a pixel bit length of an image corresponding to the output data of the entropy encoding means and a pixel bit length of an image corresponding to the output data of the non-compression encoding means are different from each other. | 04-25-2013 |
20130114690 | VIDEO ENCODING DEVICE AND VIDEO DECODING DEVICE - To efficiently reduce contour and stair-step artifacts. | 05-09-2013 |
20130121407 | VIDEO ENCODING DEVICE AND VIDEO DECODING DEVICE - A video encoding device and a video decoding device prevent an increase in the number of lines of a reference line buffer in a pseudo random noise injection process. The video encoding device includes: an inverse quantization unit for inverse-quantizing a quantization index to obtain a quantization representative value; an inverse frequency transform unit for inverse-transforming the quantization representative value obtained by the inverse quantization unit, to obtain a reconstructed image block; and an asymmetrical distortion removal filter unit for injecting pseudo random noise to an area asymmetrical about a boundary of the reconstructed image block. | 05-16-2013 |
20130223514 | VIDEO ENCODING DEVICE, VIDEO DECODING DEVICE, VIDEO ENCODING METHOD, VIDEO DECODING METHOD, AND PROGRAM - A video encoding device includes: transform means | 08-29-2013 |