IMAGE RECOGNITION DEVICE AND IMAGE RECOGNITION METHOD

摘要

An image recognition device includes: a plurality of first charge storage circuits that store signal charges generated by photoelectric conversion sections; a plurality of second charge storage circuits that store signal charges generated by the photoelectric conversion sections; a first charge read circuit section that reads a pixel signal and outputs an image as a first image; a second charge read circuit section that reads a pixel signal and outputs an image as a second image; a read circuit selection section that selects one of the first charge read circuit section and the second charge read circuit section; and a feature amount determination section, wherein the feature amount determination section determines a detection target subject according to a feature amount of a subject in the second image, and whether to perform the determination for a subject in the first image is determined based on the determination result.

主权项

1. An image recognition device, comprising:
a plurality of first charge storage circuits that store signal charges generated by photoelectric conversion sections provided in each of a plurality of pixels arranged in a two-dimensional matrix; a plurality of second charge storage circuits that store the signal charges generated by the photoelectric conversion sections provided in predetermined pixels of the plurality of pixels; a first charge read circuit section that reads a pixel signal corresponding to the signal charge stored in each of the first charge storage circuits and outputs an image according to the read pixel signal as a first image; a second charge read circuit section that reads a pixel signal corresponding to the signal charge stored in each of the second charge storage circuits and outputs an image according to the read pixel signal as a second image having a predetennined reduced number of pixels; a read circuit selection section that selects one of the first charge read circuit section and the second charge read circuit section as a charge read circuit section that reads an image; an image reading section that reads an image from the charge read circuit section selected by the read circuit selection section; and a feature amount determination section that calculates a feature amount of a subject included in the image read by the image reading section and determines a detection target subject according to the calculated feature amount, wherein the feature amount determination section determines the detection target subject according to a feature amount of each subject included in the second image read from the selected second charge read circuit section at first, and whether to select the first charge read circuit section and perform the determination for a subject included in the first image read from the selected first charge read circuit section is determined based on the determination result.