PICTURE ALIGNING PROCESSOR AND INTER-PICTURE ARITHMETIC PROCESSING UNIT

摘要

PURPOSE: To efficiently and highly accurately execute aligning processing between time-sequential pictures. CONSTITUTION: A lung field is extracted from a chest radiation image and plural partial areas are set up based upon the contour of the lung field (S1). Then, aligning information expressed preferably by linear transformation is determined in each partial area (S2) and the aligning information is stored correspondingly to each partial area (S3). After independently executing the coordinate transformation of an image in each partial area based upon the aligning information of each partial area (S4), differential processing is executed (S5) and an image emphasized for a part changing with the lapse of time in the partial area is displayed (S6).