PREVENTION OF HIGHLIGHT CLIPPING

摘要

A system determines for each color channel of each portion of the image, a corresponding adjustment value to apply to the color channel to correct for a color irregularity. The system determines a corrected adjustment value based on a difference between twice the pixel value and the maximum saturation value. If the adjustment value as applied is larger than the corrected adjustment value, the system applies the adjustment value to the corresponding color channel of the image portion to produce the adjusted color channel. Otherwise, the system applies the corrected adjustment to the corresponding color channel of the image portion to produce an adjusted color channel. The system generates a modified image based on the adjusted color channel.

主权项

1. A method for processing an image captured by a camera comprising:
accessing an image from an image sensor; determining, for each color channel of each portion of the image, a corresponding adjustment value to apply to the color channel to correct for a color irregularity, each color channel comprising a set of pixels each with a pixel value between zero and a maximum saturation value; determining a corrected adjustment value based on a difference between twice the pixel value and the maximum saturation value; in response to a determination that the adjustment value as applied is larger than the corrected adjustment value, applying the adjustment value to the corresponding color channel of the image portion to produce the adjusted color channel; in response to a determination that the adjustment value as applied is larger than the corrected adjustment value, applying the corrected adjustment to the corresponding color channel of the image portion to produce an adjusted color channel; and generating a modified image based on the adjusted color channel.