Camera device, image processing device, image processing method, and image processing program

Abstract

The object of the present invention is to perform correction to improve the image quality of image data obtained from an image pickup device in which a plurality of phase difference detection pixels are arranged at high density and in a wide area while reducing the circuit scale. The image pickup device of the present invention ( 1) It has: an imaging element (17), which is formed by arranging a plurality of pixels with different spectral sensitivities in a two-dimensional matrix, and disposing phase difference detection pixels on some pixels of the plurality of spectral sensitivities; the phase difference pixels a discrimination unit that divides the phase difference detection pixels disposed on the imaging element (17) into a first pixel and a second pixel other than the first pixel, and the first pixel has an image quality that is more difficult for human eyes to discriminate than other spectral sensitivities; and a phase difference pixel value correcting section that performs correction processing on each of the first pixels classified by the phase difference pixel discrimination section, the accuracy of which correction processing is lower than that of the correction processing performed on each of the second pixels precision.

Description

technical field [0001] The present invention relates to an imaging device, an image processing device, an image processing method, and an image processing program. Background technique [0002] An imaging element is known that converts an optical image formed optically into an electrical signal and has pixels that output signals for focus detection (for example, refer to Patent Document 1). [0003] This imaging element shields a part of the light-receiving surface of the phase difference detection pixel so that some of the pixels (hereinafter referred to as phase difference detection pixel) are provided with a distance measurement function by the pupil phase difference method. [0004] It is desirable that phase difference detection pixels be arranged on the entire surface of the imaging element in order to accurately measure the distance of objects of all frequencies. However, if the number of phase difference detection pixels increases, the number of pixels constituting t...

AI Technical Summary

Problems solved by technology

[0005] For example, in a so-called Bayer array imaging element, when the phase difference detection pixels are arranged at a high density, if the phase difference detection pixels are arranged only for pixels with a specific spectral sensitivity, the information on the spectral sensitivity will deteriorate. becomes conspicuous, so phase difference detection pixels are not arranged over pixels with different spectral sensitivities

[0006] In addition, since the output of the phase difference detection pixel is partially blocked as described above, it cannot be directly used as image data. Therefore, a method of performing correction using output values ​​of peripheral pixels has been proposed (for example, refer to Patent Document 2).

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