| 摘要 |
PURPOSE:To upgrade resolution in an output field and to obtain a moving image with least obscurity by determining the movings of an image at points apants from each other for lengths equal to a prescribed numbers of picture elements in the horizontal and vertical directions by block matching method to obtain a moving vector, and determining sub-picture element offset representing the moving in such a field of image data as not equal to the cipher-times of the interval between said picture elements. CONSTITUTION:The moving of a television picture at the points distant from each other for the lengths equal to the prescribed numbers of picture elements in the horizontal and vertical directions are determined by block matching method to obtain a moving vector, and a discrimination for selecting a moving vector is provided by determining sub-picture element offset representing the moving in such a field of picture data not equal to the integer- times of the interval between said picture elements. Respective sub-picture element offsets are determined correlatively with the moving in the horizontal and vertical directions. In the block matching method, the minimum differences at just three positions that are a point in the center of the block, a point shifted to the left by 16-sample length, and a point shifted to the right by also 16-sample length are tested. The method is started from these points, subsequently, the minimum differences among the nine pieces of positions disposed symmetrically around these stating points are tested with less prescribed number of samples or lines for a step. |
