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In recent years, with new hardware and applications are emerging , computer everyday human contact is becoming more and more closely , and human-computer interaction is still limited to the keyboard , mouse , light pen , these interact more and more familiar , but they limit the speed and nature of the man-machine communication . Thus , vision-based gesture interaction gradually become a hot topic in computer games, robot control and household appliances control has broad application prospects . Interaction method based on a single camera finger positioning , it comes to gesture image segmentation , gesture feature extraction and gesture recognition , and other fields , the study of this paper include the following aspects : 1 , the gesture segmentation stage , research A gesture image preprocessing method under complex background . This article by motion and color information in the image sequence of continuous gesture segmentation. First , poor shadow method of treatment, and then the divided image , the characteristics of the complexion clustering , using the RGB space model rough segmentation , then improved HSV space model fine splitting . The experimental results show that this method is simple , easy to implement , better segmentation results , and can be used for real-time image processing . 2, the gesture feature extraction stage, bilateral secondary scan traversal method fingertip positioned in the image plane . First , determine the area where the segmentation gesture gesture image divided scanning analysis uses bilateral traversal secondary scanning method , thereby to obtain the coordinate position of the fingertip , by calculating the barycentric coordinates of the hand image and gesture direction . The experimental results show that this approach not only has high positioning accuracy is also greatly improved , under the background of strong noise interference immunity . 3 , the establishment of a human-computer interaction system based on a single camera finger trigger . The system uses a camera image acquisition , completed through the fingers moving in interactive panel and click natural , effective operation of human-computer interaction . It is based on the position of the fingertip and the residence time for the parameter to determine whether to trigger a fingertip , may be used to implement a virtual mouse cursor positioning .
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