Distance estimation device, distance estimation method, integrated circuit, and computer program

摘要

A distance estimation device (1x) prevents the variation in distance estimation accuracy that has been a problem in distance estimation performed using an all-in-focus image and an arbitrary-focal-depth image. The distance estimation device can estimate a focal distance of any subject with a high degree of accuracy, and includes: a first generation unit (10w) generating a first distance map indicating a focal depth determined from an all-in-focus image and a first focal-depth image; a second generation unit (11w) generating a second distance map indicating a focal depth determined from the all-in-focus image and a second focal-depth image; and a distance map synthesis unit (14) synthesizing the generated first distance map and the generated second distance map to generate a synthetic distance map.