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Surgical instrument sorting is a repetitive work with a high risk of infection, which requires medical staffs to classify them after cleaning. Currently, the surgical instrument sorting is usually accomplished by medical staffs' manual operation. It is a time costing work, which may cause operators' fatigue even classification errors. Meanwhile, surgical instruments are relatively sharp and often...
This paper introduces an improved method of nonlinear distortion correction for wide-angle lens. The method is to cast chessboard image to the billiard table by the projector according to the given parameters, then to extract sub-pixel corners from the chessboard image collected by camera and establish fitting relations between coordinates of camera image and that of computer screen with the binary...
In this paper, an efficient stereo vision based visual odometry algorithm is proposed to solve the long-range outdoor localization problem of a mobile robot using a binocular camera. An improved method of feature matching and tracking based on SIFT algorithm is presented. The color information is used to effectively eliminate wrong feature matching, and the BBF tree is adopted to speed up the search...
A visual servo control system based on CAN-bus is designed to fulfil the manipulation for blocking plate in nuclear power plant. In the past, workers have to stay in the steam generator for a long time to assemble the blocking plate, which will have a great of harmful influence on the health of workers. In order to reduce the residence time in high radioactive region, a kind of robot is demanded to...
This paper presents a fully automated system for realtime 3D human visual hull reconstruction and skeleton voxels extraction. The main contributions include: (1) A novel network based system is presented, which uses AXIS network cameras as video capture device, and performs a parallel processing among data capture, 3D voxel reconstruction and display. (2) A new human visual hull reconstruction algorithm...
Radiometric compensation has made it possible for a projector to display on ordinary surface with colors and textures. For previous methods, itpsilas necessary to calibrate both the projector and camera at first. The calibration can be time-consuming and needs to be redone once the system settings change. We present a method that simplifies the calibration process. As a result, the system is more...
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