发明名称 |
Method and system for contrast enhancement of digital video |
摘要 |
A method for enhancing the contrast of video pictures that includes the steps of receiving an input video signal; extracting a picture from said input video signal; determining an active window for said picture; calculating a histogram for luminance values of pixels in said active window of said picture; determining characteristics of said histogram; selecting one suitable mapping function from a plurality of mapping functions based on the determined characteristics of said histogram; and mapping the luminance value of each pixel in said picture in accordance with said selected mapping function.
|
申请公布号 |
US2005031201(A1) |
申请公布日期 |
2005.02.10 |
申请号 |
US20040878981 |
申请日期 |
2004.06.28 |
申请人 |
STMICROELECTRONICS ASIA PACIFIC PTE LTD. |
发明人 |
GOH KWONG HUANG |
分类号 |
G06T5/00;G06T5/40;(IPC1-7):G06K9/00;H04N5/14;G06K9/40 |
主分类号 |
G06T5/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|