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Abstract

A method enabling reconstitution of the luminance values of a frame from the luminance values of the pixels of two known frames. The method includes estimating a velocity vector for each pixel of a single frame corresponding with an instant T.sub.1 between T.sub.a and T.sub.b, or being T.sub.a or T.sub.b. For each pixel of this image, called the father pixel, the coordinates of the center of a pixel to be interpolated, called the son pixel, are successively determined, corresponding with the center of the father pixel by a translation whose vector is a function of the velocity vector of the father pixel, multiplied by the duration T.sub.1 -T.sub.j. Each pixel to be interpolated has successively associated therewith a velocity vector which is constituted by the velocity vector of its father pixel, and in the two known frames, the coordinates and then the luminance of two points corresponding with the center of the pixel to be interpolated are determined, by a translation in the plane of one of the known images. The vector of this translation is a function of the velocity vector associated with the pixel to be interpolated, respectively multiplied by the durations T.sub.j -T.sub.a and T.sub.b -T.sub.j. Then, a luminance value for the pixel to be interpolated is determined by computing a linear combination of the luminance values of these two points.

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