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Being the motion vector method of detection which motion vector method of detection, calculates the SAD value while the motion vector detection device and computer reading possible
Being the motion vector method of detection which motion vector method of detection, calculates the SAD value while the motion vector detection device and computer reading possible
PROBLEM TO BE SOLVED: To provide a novel motion vector detecting technology for realizing reduction of a motion vector detection processing time of an image block.;SOLUTION: In a motion vector detecting method, each of pixel values of an image being a detection object is divided by a numerical value of 1 or over at first to produce an image comprising a reduced number of bits wherein the integer part of each quotient is used for each of new pixel values. Succeedingly, SAD values are calculated by using the images comprising a reduced number of bits for processing objects and a minimum SAD value is extracted among them. Then the SAD values of the images comprising a reduced number of bits are evaluated on the basis of the extracted minimum SAD value to discriminate whether or not an image block is to be a calculation object of a true SAD value. Further, the SAD values of true pixel values are calculated by using the image block being a calculation object of the true SAD value for the processing object to particularize the minimum value among them. Finally, a motion vector of the image block is detected on the basis of the image block being the calculation source of the particularized true SAD value.;COPYRIGHT: (C)2005,JPO&NCIPI
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