Title :
Study of automatic exposure algorithm based on HD ip camera
Author :
Jie Liu ; Dayun Ren ; Junwei Zou ; Yuexin Wu ; Shan Li
Author_Institution :
School of Electronic Engineering, Beijing University of Posts and Telecommunications, China
Abstract :
The proposed automatic exposure algorithm calculated the image´s average brightness based on the uniform partion with weight, then controlled shutter and gain by a gradual approximation with different adjusting step-size and achieved a wide range control of automatic exposure based on high definition ip camera. For high definition ip camera´s different scene, the results based on TI´s davinci platform shows that the proposed algorithm reached good auto exposure effect in normal lit, back lit and excessive front lit. At the same time, algorithm´s complexity is reduced and its efficiency is improved.
Keywords :
discontinuous step-size; uniform partition; weight;
Conference_Titel :
Advanced Intelligence and Awarenss Internet (AIAI 2010), 2010 International Conference on
Conference_Location :
Beijing, China
DOI :
10.1049/cp.2010.0766