IMAGE SENSOR, CALCULATION METHOD, AND ELECTRONIC DEVICE

摘要

The present disclosure relates to an image sensor, calculation method, and electronic device that increase flexibility of the arrangement of light-shielded pixels and detect the phase difference with high precision. —According to an aspect of the present disclosure, an image sensor includes: a pixel unit in which light-shielded pixels are arranged among normal pixels; a setting unit (texture determination unit) configured to determine texture around the light-shielded pixel as a pixel of interest present in a region of interest, and set a weighting coefficient on the basis of the texture; a calculation unit (correlation calculation unit) configured to calculate a correlation value between a pixel value of the light-shielded pixel and a pixel value of the normal pixel around the light-shielded pixel; and a generation unit (phase difference calculation unit) configured to generate a degree-of-correlation histogram. The present disclosure is applicable to an imaging apparatus with focal plane phase detection AF.

主权项

1. An image sensor comprising:
a pixel unit in which light-shielded pixels are arranged among normal pixels arranged in a matrix; a setting unit configured to determine texture around the light-shielded pixel as a pixel of interest present in a region of interest, and set a weighting coefficient on the basis of the texture; a calculation unit configured to calculate a correlation value between a pixel value of the light-shielded pixel as the pixel of interest and a pixel value of the normal pixel around the light-shielded pixel; and a generation unit configured to multiply the correlation value calculated for the light-shielded pixel by the weighting coefficient, and calculate integration for the light-shielded pixels present in the region of interest, to generate a degree-of-correlation histogram.