Patent
Method for encoding and decoding video signals
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TLDR
In this paper, a method for encoding video signals by inverse motion compensated temporal filtering where video frames of a base layer are used to encode video frames from an enhanced layer into predicted images was proposed.Abstract:
A method for encoding video signals by inverse motion compensated temporal filtering where video frames of a base layer are used to encode video frames of an enhanced layer into predicted images. For each image block in an arbitrary frame in an enhanced layer frame sequence, an area including a block, which is present in a base layer frame temporally coincident with the arbitrary frame and is at the same position as the image block, is enlarged according to the ratio between screen sizes of the two layers. A reference block most highly correlated with the image block is searched for in the enlarged area in the temporally coincident base layer frame through motion estimation and is used to obtain pixel difference values and a motion vector of the image block for encoding the image block into a predicted image, thereby improving coding efficiency.read more
Citations
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References
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Patent
Video encoding method and apparatus and video decoding method and apparatus
TL;DR: In this paper, a video picture is encoded by adaptively switching between the operation of using a plurality of decoded video signals as reference frames and generating a predictive macroblock picture from each macroblock.
Patent
Motion vector calculating method
TL;DR: In this paper, a block (MB22) of which motion vector is referred to in the direct mode contains a plurality of motion vectors, 2 motion vectors MV23 and MV24 which are used for inter picture prediction of a current picture (P23) to be coded, are determined by scaling a value obtained from averaging or selecting one of the plurality of the motion vectors.
Patent
Picture encoding and/or decoding apparatus and method for providing scalability of a video object whose position changes with time and a recording medium having the same recorded thereon
Teruhiko Suzuki,Yoichi Yagasaki +1 more
TL;DR: In this paper, an apparatus and method for obtaining scalability of a video object (VO) whose position and size changes with time is presented, where the position of an upper layer picture and that of a lower layer picture in an absolute coordinate system are determined so that corresponding pixels in an enlarged picture and in the upper layer pictures may be arranged at the same positions in the absolute coordinate systems.
Patent
Drifting reduction and macroblock-based control in progressive fine granularity scalable video coding
TL;DR: In this paper, a motion-compensated video encoding scheme employs progressive fine-granularity layered coding to encode macroblocks of video data into frames having multiple layers, including a base layer of comparatively low quality video and multiple enhancement layers of increasingly higher quality video.
Patent
Method for calculation motion vector
TL;DR: In this article, the motion vector of a macroblock pair to be coded in a frame structure referring to frame preceding in display order, in a mode selecting unit (1109), is calculated by substituting 0 into the MB.