Patent ID: 11972538
Assignee: APPLE INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 19:
20. The electronic device of claim 15, the guided filter circuit is configured to generate the demosaiced image data by combining the full-resolution green channel image data with red and blue channel image data to generate the demosaiced image data, wherein the red channel image data is generated by, for each non-red pixel of the raw image data:
determining a red value based upon an aggregation of values of a plurality of red pixels of the raw image data within a neighborhood of the non-red pixel;
determining a green value based upon an aggregation of a plurality of pixels of the full-resolution green channel image data corresponding to the plurality of red pixels; and
modifying the red value based upon a covariance of the plurality of red pixels and the plurality of pixels of the full-resolution green channel image data.