Patent ID: 9171215
Filing Date: 2015-10-27
Classification: B60R,G06K,H04N

Abstract:
1. An image processing device comprising: a camera configured to capture an image using an imaging element including an arrangement of a plurality of color light-receiving pixels which receive light through a color filter and a plurality of transparent light-receiving pixels which receive light without using the color filter; a camera control unit configured to capture an image by the camera at a predetermined exposure level for each predetermined control cycle; a region of interest setting unit configured to set at least one predetermined region of interest with respect to an original image captured by the camera and including an arrangement of a plurality of color pixels with each color pixel being assigned with a gradation value according to a light-receiving level of each of the color light-receiving pixels and a plurality of transparent pixels with each transparent pixel being assigned with a gradation value according to a light-receiving level of each of the transparent light-receiving pixels; and an exposure level determination unit configured, for the region of interest of the original image captured by the camera using a first exposure level in a control cycle of a predetermined time point, to calculate a transparent pixel saturation rate which is a ratio of transparent pixels whose gradation value is saturated among the transparent pixels in the region of interest, and to determine a second exposure level which is an exposure level of a next control cycle by changing the first exposure level according to the transparent pixel saturation rate.