Patent ID: 8421914

Claim:
A moving image converting apparatus for converting moving image data, comprising: a block segmentator for segmenting a frame of the moving image data into at least one block; a shift detector for detecting a shift of an image of a subject contained in each of segmented blocks as a block shift distance; a controller for inputting the block shift distance detected by the shift detector, determining a sampling phase change rate (ΔP) as a process parameter to the block in a down-sampling operation, and determining an order K of a stop target harmonic component based on a super-resolution effect, K being an integral; a pre-filter for inputting each block segmented by the block segmentator, and removing from each block a high-frequency component equal to or higher than a stop band frequency (fs) calculated based on K; and a down-sampler for inputting a block with the high-frequency component removed therefrom by the pre-filter and downsampling the input block in accordance with the sampling phase change rate (ΔP) in order to reduce the number of pixels of each block by 1/M times, M being an integer greater than 2, wherein K is determined to satisfy: 1<K<M; wherein the controller determines the stop target harmonic component order (K) in order to enable the down-sampling operation to be performed with block movement speed range information applied, the down-sampling operation performed within a subject speed range generating the super-resolution effect, the block movement speed range information generating the super-resolution effect in response to a time integration effect of vision calculated with respect to harmonic component data of each order generated in the 1/M time down-sampling operation, and supplies the determined stop target harmonic component order (K) to the pre-filter; and wherein the pre-filter inputs the stop target harmonic component order, and performs a band limitation process of a low-pass filter in order to remove the high frequency component equal to or higher than the stop band frequency (fs), the stop band frequency (fs) being set so that a harmonic component having a K-th order or higher, of the harmonic components generated in the 1/M time down-sampling operation performed by the down-sampler, is free from overlapping an original signal component.