摘要:
A video image decoding device (1) is equipped with a TT information decoder (14) that, in the case where encoded data includes merge/skip information that merges or skips presence information indicating whether or not frequency-domain transform coefficients are included in the quantized transform coefficients, does not decode the presence information, and a TT information inference unit (33) that, in the case where the encoded data includes merge/skip information that merges or skips the presence information, infers the presence information. The TT information decoder (14) uses presence information inferred by the TT information inference unit (33) to decode the encoded and quantized transform coefficients.
摘要:
The present invention is related to a hash-based distributed video coding architecture. At the encoder, the input video sequence is organized in Groups of Pictures (GOPs) and is decomposed into key frames, i.e., the first frame in each GOP, and WZ frames. The key frames are encoded using H264/AVC Intra frame coding. The Wyner-Ziv (WZ) frames are encoded in two parts, a hash layer and a WZ layer. To construct the hash information, the WZ frames are quantized and each quantized frame is then decorrelated using spatio-temporal prediction and entropy coded, and then multiplexed with the encoded key frames. At the decoder, the intra bit stream is H264/AVC decoded and the intra frames are stored in a reference frame buffer. The hash is decoded by inverting the tasks applied at the encoder, i.e. entropy decoding and inverse spatio-temporal prediction, and the obtained bit planes are stored. Next, Overlapped Block Motion Estimation and Probalistic Compensation (OBMEPC) is used to estimate the missing bit planes in the side - information. The decoder utilizes the hash information and the side information frame created by OBMEPC to perform online estimation of the correlation channel, and produces soft estimates used to decode the WZ bit planes.
摘要:
Multiplexing means of an image encoding device multiplexes display speed information or information indicating absolute time, and an image decoding device performs processing on the basis of the multiplexed display speed information or information indicating absolute time, whereby image decoding process can be performed smoothly and accurately.
摘要:
Multiplexing means of an image encoding device multiplexes display speed information or information indicating absolute time, and an image decoding device performs processing on the basis of the multiplexed display speed information or information indicating absolute time.
摘要:
In a decoding apparatus in accordance with H.264, when the POC type is determined as "1" and a recovery point SEI is detected, the maximum frame number MaxFrameNum (or its integral multiple) is set as the initial value of the frame number offset (FrameNumOffset).
摘要:
An image decoding device is provided which decodes an encoded bit stream of a video object. The device comprises a VOP decoding part decoding a VOP that is image data serving as an encoding unit of a video object; a GOV header analyzing part (1007) decoding a time code; and a VOL header analyzing part (1006) decoding VOP rate information, contained in encoded form in a header information part of a VOL layer composed of several VOPs, indicative of the number of the VOP to be displayed per unit time in the VOL, and defining an absolute time of the VOP to be decoded by the VOP decoding part in combination with the time code decoded by the GOV header analyzing part.
摘要:
A signal transmission system according to the present invention comprises: a signal transmission unit (101) that includes a MPEG decoder (101) which receives digital broadcasting and outputs a luminance signal Y and two color difference signals P B /P R , and a transmission path encoding circuit (103) which encodes the YP B P R outputted from the MPEGU decoder (102) into signals in the forms suited to a transmission path and transmits the encoded signals; and a signal reception unit (104) that includes a transmission path decoding circuit (105) which receives the encoded YP B P R and decodes them, a Y processing circuit (106) which processes the decoded luminance signal Y, a chrominance processing circuit (107) which processes the respective decoded color difference signals P B /P R , a signal conversion circuit (108) which converts the YP B P R outputted from the Y processing circuit (106) and the chrominance processing circuit (107) into RGB signals, and a display device (108) which displays the RGB signals. According to the so-configured signal transmission system, it is possible to realize a signal transmission system in which hardware configurations of the video signal transmitting end and receiving end can be simplified.
摘要:
A parallel processing starting unit 3 that partitions an inputted image into tiles each having a predetermined size, and distributes tiles obtained through the partitioning, and N tile encoding units 5-1 to 5-N each of that carries out a prediction difference encoding process on a tile distributed thereto by the parallel processing starting unit 3 to generate a local decoded image are disposed, and each of N tile loop filter units 7-1 to 7-N determines a filter per tile suitable for a filtering process on the local decoded image generated by the corresponding one of the tile encoding units 5-1 to 5-N, and carries out the filtering process on the local decoded image by using the filter