Image conversion method and conversion device

Abstract

To realize image conversion processing by means of filtering using a multi-tap structure without requiring that a memory to use has a high-speed capability, a merge circuit merges sampled input image signals for every plurality pieces of continuous pixel data and outputs signals, and a memory element stores approximately one frame of output data from the merge circuit The memory element outputs signals to a memory element in accordance with outputs from a memory element which stores control data which are calculated in advance. The memory element stores a larger number of input signals received from the memory element than the number of taps of a filtering circuit and outputs signals to a selection circuit The selection circuit selects signals required by the filtering circuit from input signals received from the memory element and outputs signals to the filtering circuit The filtering circuit generates output image signals, using input signals received from the selection circuit