IMAGE DATA PROCESSING METHOD AND IMAGE DATA PROCESSING CIRCUIT, ESPECIALLY CAPABLE OF PERFORMING ACCURATE CALIBRATION WITHOUT REGARD TO IMAGE VARIATION

摘要

PURPOSE: An image data processing method and an image data processing circuit are provided to perform calibration of image data accurately. CONSTITUTION: A previous frame image data first restore unit compresses the original present frame image data, and delays the compressed image data for 1 frame period, and extends the delayed image data, and thus generates the first restore previous frame image data indicating an image of the previous frame. A variation calculation circuit(8) calculates the variation between the image of the present frame and the image of the previous frame. A previous frame image data second restore unit(9) generates the second restore previous frame image data indicating the image of the previous frame, on the ground of the original present frame image data and the variation. A restore previous frame image data generation unit(10) generates restore previous frame image data indicating the image of the previous frame. A calibration image data generation unit(11) generates calibration image data.