Invention Grant
- Patent Title: Contrast enhancement
- Patent Title (中): 对比度增强
-
Application No.: US13376920Application Date: 2010-06-28
-
Publication No.: US08639056B2Publication Date: 2014-01-28
- Inventor: Jiefu Zhai , Joan Llach
- Applicant: Jiefu Zhai , Joan Llach
- Applicant Address: FR Issy les Moulineaux
- Assignee: Thomson Licensing
- Current Assignee: Thomson Licensing
- Current Assignee Address: FR Issy les Moulineaux
- Agent Robert D. Shedd; Richard LaPeruta
- International Application: PCT/US2010/001848 WO 20100628
- International Announcement: WO2011/008239 WO 20110120
- Main IPC: G06K9/40
- IPC: G06K9/40

Abstract:
A method according to the invention enhances contrast of an image by accessing an original image, and establishing, assigning, or initializing pixel values and pixel coordinates of pixels of the image. Then, a Laplacian pyramid having an integral number of levels is generated for the image. A contrast boost pyramid is generated and applied to the Laplacian pyramid to obtain a modified Laplacian pyramid wherein values in the levels of the Laplacian pyramid are enhanced. An enhanced image is then constructed from the modified Laplacian pyramid.
Public/Granted literature
- US20120082397A1 CONTRAST ENHANCEMENT Public/Granted day:2012-04-05
Information query