Imaging systems with image pixels having adjustable spectral responses

An image sensor, comprising:

• a substrate;
• an array of image pixels formed in the substrate, wherein the array of image pixels includes first and second groups of image pixels and comprises a color filter array;
• and
• spectral response adjustment structures adjacent to the color filter array, wherein the spectral response adjustment structures are configured to adjust respective spectral responses of image pixels in the first group of image pixels.

A method for operating an imaging device having an image sensor and processing circuitry, wherein the image sensor comprises an image pixel array having spectral response adjustment structures that are configured to adjust a spectral response of at least one image pixel in the image pixel array, the method comprising:

• with the processing circuitry, determining illuminant information and light level information for an image;
• with the processing circuitry, determining a state of the spectral response adjustment structures;
• and
• with the processing circuitry, generating a color correction matrix for the image based on the illuminant information, the light level information, and the state of the spectral response adjustment structures.