Property of Correlation between Entropy and Focus
It makes all the difference whether one recognizes objects through the clear or fuzzy image through a video. That is a so-called garbage in garbage out. In an imaging automatic identification system, in order to recognize the objects in a frame of a video correctly, it is very important to extract the clearest frame from the video. Based on observing the distribution of histogram for each frame from a section of video with the same scene, we find that the distribution range of histogram is wider if the frame is clear, otherwise, the distribution range of histogram is narrower when the frame is fuzzy. On the other hand, clear image contains higher entropy and fuzzy image contains lower entropy. According to this fact, the relationship between entropy and the clarity of an image is proposed in this paper. By using this property, the clearest image is extracted from a section of video with the same scene automatically. Experiments are carried out for some samples with scenes of different distance to demonstrate the correctness of the proposed property.
image processing entropy surveillance system pattern recognition video
Yu-Kumg Chen Tung-Han Yang Jian-Wei Ko
Department of Electronic Engineering Huafan University No. 1,Huafan Rd.,Shihding Township,Taipei County,Taiwan 223,R.O.C
国际会议
2010 IEEE信息与自动化国际会议(ICIA 2010)
哈尔滨
英文
1-6
2010-06-20（万方平台首次上网日期，不代表论文的发表时间）