Invention Grant
- Patent Title: Method for processing highlights and saturated regions in a digital image
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Application No.: US14168155Application Date: 2014-01-30
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Publication No.: US09530194B2Publication Date: 2016-12-27
- Inventor: Rastislav Lukac , Ken Doyle
- Applicant: Foveon, Inc.
- Applicant Address: US CA Santa Clara
- Assignee: Foveon, Inc.
- Current Assignee: Foveon, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Leech Tishman Fuscaldo & Lampl
- Agent Kenneth D'Alessandro, Esq.
- Main IPC: G06K9/00
- IPC: G06K9/00 ; G06T5/00 ; G06K9/40 ; H04N9/64 ; H04N9/68

Abstract:
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.
Public/Granted literature
- US20140321742A1 Method for Processing Highlights and Saturated Regions in a Digital Image Public/Granted day:2014-10-30
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