Histogram anabolism device and its manner for contrast improvement of dynamic picture image

摘要

(57) Abstract It updates the level anabolism at the scope unit, the histogram which corresponds to this according to the level of the entry image it constitutes with from the look-up table which reads out the level anabolism, it possesses the simple hardware at the same time frame memory, with the PDF operation vessel and abbreviating the ratio circuit the circuit where it counts concerning the entry image of the scope unit, to picture prime below maximum gray level vis-a-vis respectively from picture prime of the smallest gray level, the histogram which corresponds to each gray level of the entry image on the basis of the CDF value of the CDF operation vessel and each gray level operation the CDF value of each gray levelIt can offer.