Motion vector detection apparatus and predictive coding system for compensating for movement with the apparatus

A motion vector detection apparatus, comprising:

• reference odd-field block feature extraction means for dividing a reference odd-field block into a plurality of minor blocks and for determining a value for an odd-field matching element, which value represents pixels constituting each of said minor blocks;
• search odd-field block feature extraction means for dividing a search odd-field block into a plurality of minor blocks and for determining a value for an odd-field matching element, which value represents pixels constituting each of said minor blocks;
• odd-field motion vector generating means for generating an odd-field motion vector in order to search for a search odd-field block which best matches said reference odd-field block, based on said odd-field matching elements provided from said reference odd-field block feature extraction means and said search odd-field block feature extraction means;
• reference even-field block feature extraction means for dividing a reference even-field block into a plurality of minor blocks and for determining a value for an even-field matching element, which value represents pixels constituting each of said minor blocks;
• search even-field block feature extraction means for dividing a search even-field block into a plurality of minor blocks and for determining a value for an even-field matching element, which value represents pixels constituting each of said minor blocks;
• even-field motion vector generating means for generating an even-field motion vector in order to search for a search even-field block which best matches said reference even-field block, based on said even-field matching elements provided from said reference even-field block feature extraction means and said search even-field block feature extraction means;
• first data synthesis means for synthesizing together into frame matching elements said odd-field matching elements and even-field matching elements which are provided from said reference odd-field block feature extraction means and said reference even-field block feature extraction means;
• second data synthesis means for synthesizing together into frame matching elements said odd-field matching elements and even-field matching elements which are provided from said search odd-field block feature extraction means and said search even-field block feature extraction means;
• and
• frame motion vector generating means for generating a frame motion vector in order to search for a search frame block which best matches a reference frame block, based on said frame matching elements provided from said first and second data synthesis means.