DEPTH SIGNAL GENERATING DEVICE, PSEUDO-STEREOSCOPIC IMAGE SIGNAL GENERATING DEVICE, DEPTH SIGNAL GENERATING METHOD, PSEUDO-STEREOSCOPIC IMAGE SIGNAL GENERATING METHOD, DEPTH SIGNAL GENERATING PROGRAM, PSEUDO STEREOSCOPIC IMAGE SIGNAL GENERATING PROGRAM

摘要

The depth signal generating device (1) has a depth signal estimator (11), a depth signal histogram generator (12), and a depth signal level converter (13). The depth signal estimator (11) estimates the depth signal for every pixel of a predetermined unit on the basis of the input video signal of a non-stereoscopic image. The depth signal histogram generator (12) divides the range of depth signal levels assumable by the estimated depth signals into a plurality of depth signal level regions of a predetermined range size, determines which depth signal will be included in which depth signal level region for every pixel, counts the number of pixels included in each of the divided depth signal level regions, and generates depth signal histogram data on the basis of the count value. The depth signal level converter (13) generates a depth signal level conversion curve on the basis of the depth signal histogram data, converts the depth signal levels on the basis of the depth signal level conversion curve, and generates a level-converted depth signal.