发明授权
- 专利标题: Method and apparatus for illumination compensation of digital images
- 专利标题(中): 数字图像照明补偿的方法和装置
-
申请号: US11541711申请日: 2006-09-29
-
公开(公告)号: US07787709B2公开(公告)日: 2010-08-31
- 发明人: Narayan Srinivasa
- 申请人: Narayan Srinivasa
- 申请人地址: US CA Malibu
- 专利权人: HRL Laboratories, LLC
- 当前专利权人: HRL Laboratories, LLC
- 当前专利权人地址: US CA Malibu
- 代理机构: Ladas and Parry, LLP
- 主分类号: G06K9/32
- IPC分类号: G06K9/32 ; G06K9/40 ; G06K9/36
摘要:
A method for enhancing the quality of a digital image by using a single user-defined parameter. A virtual image is created based on the single user-defined parameter and the original digital image. An adaptive contrast enhancement algorithm operates on a logarithmically compressed version of the virtual image to produce adaptive contrast values for each pixel in the virtual image. A dynamic range adjustment algorithm is used to generate logarithmic enhanced pixels based on the adaptive contrast values and the pixels of the logarithmically compressed version of the virtual image. The logarithmic enhanced pixels are exponentially expanded and scaled to produce a compensated digital image.
公开/授权文献
信息查询