Signal processing device and signal processing method

A signal processing device, comprising:

• a pixel array unit comprising a plurality of pixels,
• wherein the plurality of pixels, in a matrix arrangement, includes a plurality of first pixels, a plurality of second pixels, a plurality of third pixels, and a plurality of fourth pixels,
• wherein the plurality of pixels have different spectral sensitivity characteristics;
• and
• circuitry configured to:
• obtain a plurality of pixel signals from the plurality of pixels,
• wherein a plurality of first pixel signals of the plurality of pixel signals are obtained from the plurality of first pixels;
• read the obtained plurality of pixel signals,
• wherein:
• the plurality of first pixels are adjacent to the plurality of second pixels in a row direction of the matrix arrangement and a column direction of the matrix arrangement,
• the plurality of second pixels are at a two-pixel pitch in the row direction of the matrix arrangement and the column direction of the matrix arrangement,
• the plurality of third pixels are adjacent to the plurality of second pixels in a first diagonal direction of the matrix arrangement, and
• the plurality of fourth pixels are adjacent to the plurality of second pixels in a second diagonal direction of the matrix arrangement;
• add, the plurality of first pixel signals obtained from the plurality of first pixels, to determine a first addition result corresponding to the plurality of first pixel signals;
• read the first addition result corresponding to the plurality of first pixel signals;
• and
• correct the plurality of pixel signals such that a first signal array corresponding to the corrected plurality of pixel signals is equal to a second signal array corresponding to the pixel array unit.