Technology Research To Capture The Monocular Machine Vision Based Human Shull

In this paper in view of the monocular machine vision of human head capturetechnology is studied，Expectations for the development of research results can besuited to the old people’s food，clothing，shelter，transportation，medical，culturalentertainment needs of assistive devices and rehabilitation，Clothing accessories suchas elderly supplies utensils，And old houses，old apartment，old living facilities， etc.，provides the basis，safe and effective technical support.According to the head capture technology based on monocular vision taskrequirements and the technical index of the whole system，Main design the humanhead location based on monocular vision capture system overall structure，Determinethe structure of a positioning system based on monocular vision and the structure ofthe manipulator capture system. Through analyzing the world coordinate system，plane coordinate system and image coordinate system and the relationship between thecamera coordinate system，Established the model of image sensor，through theparameter calculation and calibration experiment to determine the focal length of theimage sensor， the main point coordinate matrix and other parameters. The acquisitionof human skull image grayscale images using the weighted average method，Byaverage method to get the image binarization threshold，The airspace method toenhance the image，The extraction of feature points，Using the least squares fittingcircle curve to calculate the center of the human head，locate the human head.Through the capture system has carried on the kinematics and dynamics analysisand simulation，To determine the structure of the mechanical system，For motor，electric putter，motion controller is composed of capture system has carried on thedesign and type selection. Capture system driven by servo motor rotate the capturesystem，Electric draw stem drive head up and down，Combination of machine visionto the human body head positioning，The system automatically put a hood in sittingposition on the head of the human body，Capture to realize the human head. On the basis of the hardware and software design，for on-line debuggingexperiment. The experimental results show that the，Design of positioning system canfast accurate real-time positioning the head to the human body. Based on monocularvision is verified to head the feasibility of the positioning of the capture system design.