MOTION VECTOR DETECTOR

摘要

PURPOSE: To detect a motion vector with a small hardware scale in real time without lowering the detection accuracy of the motion vector. CONSTITUTION: A difference absolute value calculation part 25 calculates the difference absolute value of the image data of this picture element and the image data of the picture element of the reference block corresponding to this picture element for every picture element of a motion vector detection block. A bit reduction part 26 reduces the number of the bits of the digital data showing the calculated difference absolute value. A accumulated addition part 27 accumulates and adds the difference absolute value from which this number of bits is reduced corresponding to the number of picture elements of the block. Registers 28 and 29 and a comparison part 30 detect the motion vector based on the accumulated and added value.