Patent ID: 8090025

Claim:
A moving-picture coding apparatus comprising: a predictive encoder to produce and encode a residual picture that is a residual signal between a picture to be coded that is an input moving-picture video signal to be subjected to coding and a predictive picture produced from a reference picture that is a local decoded video signal for each of a plurality of rectangular zones, each composed of a specific number of pixels, into which a video area of the moving-picture video signal is divided; a zone-border motion estimator to obtain a boundary condition of each of a plurality of borders between the rectangular zones and another plurality of rectangular zones adjacent to the rectangular zones, find a border, of the reference picture, having a boundary condition that matches the boundary condition, by motion-vector search in the reference picture, and generate border motion-vector data that is data on a motion vector from a border of the rectangular zone in the picture to be coded to the border of the reference picture thus found; and a zone-border motion compensator to define a boundary condition of a border that corresponds to the border motion vector data, from the reference picture based on the border motion-vector data, and generate an estimated video signal in each rectangular zone in the picture to be coded, that satisfies Poisson's Equation, thus producing a first predictive picture, wherein the predictive encoder produces the residual picture with the first predictive picture as the predictive picture and encodes the residual picture; said predictive encoder including a first subtractor to produce a first residual picture from a difference between the picture to be coded and the first predictive picture; an orthogonal transformer to perform orthogonal transform to the first residual picture, thus generating orthogonal-transform coefficients data; a quantizer to perform quantization to the orthogonal-transform coefficients data based on a specific quantization parameter, thus generating post-quantization data; an inverse-quantizer to perform inverse-quantization to the post-quantization data based on a specific quantization parameter, thus generating post-inverse-quantization data; and an inverse-orthogonal transformer to perform inverse-orthogonal transform to the post-inverse-quantization data, thus producing a decoded residual picture.