Invention Grant
- Patent Title: Color correction integrations for global tone mapping
-
Application No.: US15955855Application Date: 2018-04-18
-
Publication No.: US10692196B2Publication Date: 2020-06-23
- Inventor: Guillaume Matthieu Guérin , Giuseppe Moschetti
- Applicant: GoPro, Inc.
- Applicant Address: US CA San Mateo
- Assignee: GoPro, Inc.
- Current Assignee: GoPro, Inc.
- Current Assignee Address: US CA San Mateo
- Agency: Young Basile Hanlon & MacFarlane, P.C.
- Main IPC: G06T5/00
- IPC: G06T5/00 ; H04N9/64 ; H04N9/67 ; H04N9/68

Abstract:
Color correction is integrated within global tone mapping operations to modify an image captured using an image capture device. New luminance values are determined for the pixels of the image by performing global tone mapping against those pixels using one or more sets of color correction values, which are applied against respective luminance values and color components of those pixels. The sets of color correction values are identified within 3×3 color correction matrices. A gain curve for modifying contrast values of the image is determined based on at least one of the new luminance values. A modified image is then generated by modifying the contrast values according to the gain curve, for example, by applying a gamma curve against the contrast values using data stored in a three-dimensional lookup table.
Public/Granted literature
- US20190114750A1 Color Correction Integrations for Global Tone Mapping Public/Granted day:2019-04-18
Information query