Apparatus and method for performing color transformation on raw sensor images

A method for processing image data, the method comprising:

• obtaining a raw input image that is captured under an input illumination;
• obtaining a target illumination from a user input;
• obtaining an intermediate image having colors captured under a reference illumination, from the raw input image, based on a first color transform that maps the input illumination to the reference illumination in an illumination dataset of raw sensor images that are captured under a plurality of different illuminations;
• and
• obtaining an output image having colors captured under the target illumination, from the intermediate image, based on a second color transform that maps the reference illumination in the illumination dataset to the target illumination.

A non-transitory computer-readable storage medium storing a program that is executable by at least one processor to perform a method for processing image data, the method comprising:

• obtaining a raw input image that is captured under an input illumination;
• obtaining a target illumination from a user input;
• obtaining an intermediate image having colors captured under a reference illumination, from the raw input image, based on a first color transform that maps the input illumination to the reference illumination in an illumination dataset of raw sensor images that are captured under a plurality of different illuminations;
• and
• obtaining an output image having colors captured under the target illumination, from the intermediate image, based on a second color transform that maps the reference illumination in the illumination dataset to the target illumination.