The paper presents a variant grayscalehistogram (VGH) for the purpose of detecting and locating captions in video images.
为实现视频图像中字幕的快速检测与定位，本文提出一种变异灰度直方图vgh。
2
The thresholding of betterment grayscalehistogram is a method that improve on the traditional thresholding of grayscalehistogram, which result is very well.
其中改进的灰度直方图法就是在传统的灰度直方图法基础上改进的算法，效果较好。
3
Traditional histogram equalization and gray-scale transformation algorithms can't realize the enhancement of the target in the infrared image effectively.