Method and system of lens shading color correction using block matching

At least one non-transitory computer readable medium comprising instructions that, when executed, cause at least one processor to at least:

• cluster blocks of an image into at least one cluster based on a criterion;
• process the at least one cluster to determine at least one modification parameter;
• access first shade correction data stored in memory;
• modify the first shade correction data with the at least one modification parameter to determine second shade correction data;
• and
• correct a lens shade effect associated with the image based on the second shade correction data.

A system comprising:

• means for storing first shade correction data;
• and
• means for executing instructions to process an image, the executing means to:
• cluster blocks of an image into at least one cluster based on a criterion;
• process the at least one cluster to determine at least one modification parameter;
• modify the first shade correction data with the at least one modification parameter to determine second shade correction data;
• and
• correct lens shade effect associated with the image based on the second shade correction data.

A method comprising

• clustering blocks of an image into at least one cluster based on a criterion;
• processing the at least one cluster to determine at least one modification parameter;
• accessing first shade correction data from memory;
• modifying the first shade correction data with the at least one modification parameter to determine second shade correction data;
• and
• correcting lens shade effect associated with the image based on the second shade correction data.