| CPC H04N 25/63 (2023.01) [H01L 27/14621 (2013.01); H04N 25/46 (2023.01)] | 18 Claims |
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1. An image pickup apparatus comprising:
an image sensor in which a plurality of pixels are arranged in a row direction and in a direction intersecting with the row direction, assuming that n is an integer equal to or greater than 2, each of the plurality of pixels including one micro lens and n photoelectric conversion elements, the plurality of pixels including a normal pixel that is not shaded and an OB pixel that is a shaded optical black pixel, the image sensor being configured to output an image pickup signal relating to n divided pixel signals generated by performing photoelectric conversion on light from the micro lens by the n photoelectric conversion elements; and
an image processing circuit configured to perform image processing on the image pickup signal outputted from the image sensor, wherein
the image sensor can read the image pickup signal relating to the n divided pixel signals for each pixel row including a plurality of pixels arranged in the row direction in a first read mode or a second read mode,
the first read mode is a mode in which the n divided pixel signals are added to generate one pixel signal, and one pixel row is read in one row,
the second read mode is a mode in which n signals are generated from the n divided pixel signals, and one pixel row is read in n rows,
the image pickup signal of the normal pixel is read in the first read mode and the second read mode, and the image pickup signal of the OB pixel is read in the first read mode and the second read mode,
the image processing circuit includes a first circuit configured to generate a first pixel data array from a pixel signal in a pixel row read in the first read mode, generate or extract one pixel signal from the n signals in a pixel row read in the second read mode to generate a second pixel data array having an arrangement order of pixel data that is a same as an arrangement order of pixel data of the first pixel data array and generate image data in which pixel data is arranged in a predetermined order for each pixel row, and
the first circuit performs OB level correction processing on a normal pixel signal generated or extracted from the n signals read from the normal pixel in the second read mode using an OB pixel signal generated or extracted from the n signals read from the OB pixel in the second read mode and an OB pixel signal read from the OB pixel in the first read mode.
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