Patent ID: 9154764
Filing Date: 2015-10-06
Classification: H04N

Abstract:
1. A map converting method, comprising: obtaining a first map, the first map corresponding to a particular image and representing depths of pixels in at least part of the particular image; calculating existing frequencies of depths in the first map and a cumulative histogram that represents cumulative existing frequencies of the depths of the first map; first converting the first map into a second map by using the cumulative histogram, each depth in the second map being within a first range; second converting the first map into a third map that represents the depth in the first range for each pixel by a basic conversion with which an entire depth represented by the first map is evenly converted, each depth in the third map being within the first range; and generating a fourth map by combining the second map multiplied by a blend constant with the third map multiplied by a complement of the blend constant, wherein the blend constant is a predetermined value.