Video encoding device and video decoding device
A moving image and encoding device technology, which is applied in image communication, television, electrical components, etc., can solve the problem of reduced encoding efficiency
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Embodiment approach 1
[0035] In the first embodiment, it is described that motion compensation prediction is performed between adjacent frames by taking each frame image of a video as an input, and the variable-length A moving picture encoding device that encodes to generate a bit stream, and a moving picture decoding device that decodes the bit stream.
[0036] figure 1 It is a block diagram showing the configuration of the video encoding device according to Embodiment 1 of the present invention. figure 1 The moving image encoding device shown includes: a block dividing unit 2, which outputs a macroblock image obtained by dividing each frame image of an input video signal 1 into a plurality of blocks with a macroblock size of 4; The macro / sub-block image 5 obtained from the sub-block; the intra prediction unit 8, if the macro / sub-block image 5 is input, performs intra-frame prediction on the macro / sub-block image 5 using the image signal of the memory 28 for intra prediction. Generating the pred...
Embodiment approach 2
[0138] In this second embodiment, a modified example of the variable-length coding unit 23 of the video coding device according to the above-mentioned first embodiment, and a variable-length decoding unit of the video decoding device according to the above-mentioned first embodiment similarly will be described. Modification of 61.
[0139] First, the variable length coding unit 23 of the video coding device according to Embodiment 2 will be described.
[0140] Figure 9 It is a block diagram showing the internal configuration of the variable-length coding unit 23 of the video coding device according to Embodiment 2 of the present invention. In addition, in Figure 9 in, right with figure 1 The same or corresponding parts are attached with the same symbols and descriptions thereof are omitted. In addition, the structure of the video encoding device according to the second embodiment is the same as that of the first embodiment, and the operation of each component except the ...
Embodiment approach 3
[0207] In the third embodiment, a modified example of the prediction image generation process performed by the motion compensation prediction by the motion compensation prediction unit 9 in the video encoding device and the video decoding device according to the first and second embodiments described above will be described.
[0208] First, the motion compensation prediction unit 9 of the video encoding device according to Embodiment 3 will be described. In addition, since the structure of the video encoding device according to Embodiment 3 is the same as that of Embodiment 1 or Embodiment 2 above, and the operation of each constituent element other than the motion compensation prediction unit 9 is also the same, the Figure 1~Figure 15 .
[0209] In the motion compensation predicting unit 9 of the third embodiment, the configuration and operation related to the prediction image generation process with pseudo-sampling accuracy are different from those of the first and second e...
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