METHOD AND DEVICE FOR COMPARISON OF PICTURE SIGNAL BETWEEN ADJACENT FRAMES AND EVALUATION OF IMAGE MOVEMENT

摘要

FIELD: TV equipment. SUBSTANCE: method involves comparison of picture signals in image blocks of current and previous frames. Image block of previous frame is produced by movement vector which is detected between deviation values, which are used for detection of single pixel movement vector, and in adjacent image blocks which are provided by movement of reference image block respectively in all directions by single pixel. Movement in image block in current frame is estimated and used for calculation of deviation values. Comparison of generated deviation values in vertical direction provides vertical constituent of movement vector in one half of pixel. Comparison of generated deviation values in horizontal direction provides horizontal constituent of movement vector in one half of pixel. EFFECT: increased efficiency and decreased information volume to be processed for calculation of half-pixel movement. 6 cl, 5 dwge