Study On The Method Of Image Change Detection

Change detection campare the image of different time, getting the information needed of the target according to the difference of the image.Change detection can be used to the detecton of the still targe tand moving target.The topic of the article is the detection of moving target, and this also means how to get the whole target from the image sequence.The moving target detection is the important content of computer vision,used in video survillance ,navagation and so on.In this article ,the video vidicon used to get image sequence is still,many real circumstance also fit this condition.With the development of computer vision,video survillance is used on police,custom,bank,hotel,airport,intelligent building and so on. It plays a important role more and more in public safety.Moving object detection is an important procedure in video survillance.The pricise of the target detection has an important effect on the tracking and recognition.The method of moving target detection has two class,one is based on character,the other is based on intensity.The method based on character detect the moving target according to the character of the image.This method most be used in condition that the target is large and the character is easy to get.The method based on the intensity detect moving target according to the change of the intensity of the image.The common method are the frame subtraction,the background subtraction,the optical flow.This article first tell about the common method of the detection of moving target,also preesenting a new method of the detection of moving taget.This article analysis the process of the method ,also pointing out the good and disadvantage of the method .In the end this article tell how to improve the method.This method is tested on the personal computer,proved to be real in time and steady. This method can be used in reality in the future.