Invention Grant
- Patent Title: Highlight recovery in images
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Application No.: US15198354Application Date: 2016-06-30
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Publication No.: US10070109B2Publication Date: 2018-09-04
- Inventor: Suk Hwan Lim , Frederic Cao , Touraj Tajbakhsh
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Fenwick & West LLP
- Main IPC: G06T5/00
- IPC: G06T5/00 ; H04N9/64 ; H04N5/235 ; H04N9/68 ; H04N9/04

Abstract:
Embodiments of the present disclosure relate to highlight recovery of a high-resolution image using a single low-resolution image captured at a lower exposure. An example apparatus includes a hue target circuit that receives an input image at a high-resolution including at least one pixel with a clipped color channel. For example, the input image is a Blue sky image with a pixel having clipped Blue channel. The hue target circuit also receives a set of candidate hue maps having a pixel resolution lower than the high-resolution of the input image. The hue target circuit generates a target hue value for the at least one pixel using the pixel information of the set of candidate hue maps. The apparatus also includes a hue recovery circuit that generates a recovered version of the input image by adjusting hue information of the clipped color channel based on the generated target hue.
Public/Granted literature
- US20180007332A1 HIGHLIGHT RECOVERY IN IMAGES Public/Granted day:2018-01-04
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