Map converting method, map converting apparatus, and computer program product for map conversion

摘要

According to an embodiment, a map converting method includes calculating existing frequency of depths in a first map, the first map corresponding to at least an image area of an image and each pixel of the first map representing a depth corresponding to a pixel of the image area; and first converting the first map into a second map that represents a depth in a first range for each pixel by using the existing frequency.

主权项

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.