Method for Processing Highlights and Saturated Regions in a Digital Image

摘要

A method for performing highlight restoration on a digital image includes comparing the pixels in the image with a saturation level value to identify saturated pixels. A saturation map of saturated pixels is generated. Each selected saturated pixel is identified as a restorable pixel only if at least one color channel of the pixel is unsaturated. For each restorable pixel, a group of the closest unsaturated pixels above, below, to the left, and to the right of the select saturated pixel is identified. A replacement pixel value is generated for each saturated color channel of the restorable pixel, using a combination of the pixel values of the unsaturated color channels of the restorable pixel and the pixel values of the corresponding color channels of the nearby unsaturated pixels.

主权项

1. A method for performing at least one of highlight restoration and highlight neutralization of an image from a digital camera, comprising:
generating a blending value within a predetermined range; if the blending value is equal to a first one of the minimum and maximum in the predetermined range, performing highlight restoration; if the blending is equal to a second one of the maximum and minimum in the predetermined range, performing highlight neutralization; and if the blending value is within a predetermined range, performing both highlight restoration and highlight neutralization, and blending the results of the highlight restoration and highlight neutralization according to the blending value.