Vision-based Human Tracking Technology In Human-computer Interaction Applications

Now,for the single pattern of human-computer interaction in digital entertainment,in this thesis, computer vision is introduced into human-computer interaction in digital entertainment to perfect the practice of man-machine interface by the analysis on the body movement based on computer visual.The thesis introduce a simple 3D model of the upper half of the body which can imitate body movement and has an important direction in tracking and recovering of body model.The experiment is performanced that USB camera is used to get image data, to simultaneously calculate the depth information, then to apply a body track by using the information of depth and color and to perform a tracking algorithm of particle filtering based on color histogram. The results of the experiment indicate that the Robust tracking and recognizing of normal movement of the upper body can be realized in complicated background and such problems as automatic initialization and fault recovering can be resolved.Moreover,digital entertainment program framework is built and Stranded Game is developed through Direct X technology which applies the analysis system on the body movement and takes the body as a driver. It is the most important one of all input systems, a computer platform of human-computer Interaction which body tracking is applied based on visual in the Computer Game.It realizes the human-computer function by taking hand movement recognizing and tracking for example which head recognizing and tracking is also carried out referring to the method and program mentioned above.The system of the game takes real-time body image by USB in the telecamera, gets different fault value of characteristic feature of head and hand and then chooses the most suitabl fault value to be recognized for decision tree and at last realizes human-computer interaction by taking window controll as input system taking the place of mouse and keyboard in the game. .The above all build a new digital entertainment system with the specialty of human-computer Interaction.