基于图像的自动曝光算法研究

相机的曝光综合测试是相机参数测量中最为关键的参数测量之一,相机要进行曝光的控制,首先就要进行曝光量的测试。为了得到精确的测光,一些相机采用测光计或其他光电设备测光,这不但使用不方便而且使得相机的生产成本提高。因此,对数码相机的液晶取景器上所显示的图像进行采样、处理具有很重要的意义。着重介绍了一种基于图像的自动曝光控制算法。

Study on auto-exposure algorithm based on images analysis

In digital camera, the synthesized test of exposure is one of key parameter selections. In order to control the exposure of the camera, first of all we must test the exposure value. Some cameras are equipped with metering and photocell devices, which leads to difficult application and enhances the cost. Therefore, it is very significative to sample and process the images displayed on the liquid crystal display(LCD) of the camera. This paper presents an auto exposure algorithm based on the images displayed on the LCD of the camera.