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Accurate hand-eye calibration is a very significant task in robotics. Many algorithms focus on L optimization, and Least Square Estimation (LSE) is usually employed to deal with this problem. For the reason that LSE can only be applied to occasions that errors obey normal distribution, LSE can lead to a lower precision of calibration result when gross errors occur. Different from the existing approaches,...
At present, the edge-cutting of Wilton Carpet mainly rely on manual operation. Artificial cutting method has the disadvantages of low production efficiency, poor cutting quality, and is easy to be affected by human factors. The edge-cutting system with computer vision can overcome the disadvantages of manual cutting, but the existing systems have the disadvantages of high cost, low efficiency and...
Whether it is for ship design and manufacture, domestic and international trade of ship transportation, or to accurately judge the ship for further navigation, the accurate and fast measurement of cabin capacity are a crucial thing. This paper presents a method and system for non-contact measurement of cabin capacity. In this method, the line scan CCD camera is used to match the line structured light...
Due to the external acceleration interference/magnetic disturbance, the inertial/magnetic measurements are usually fused with visual data for drift-free orientation estimation, which plays an important role in a wide variety of applications, ranging from virtual reality, robot, and computer vision to biomotion analysis and navigation. However, in order to perform data fusion, alignment calibration...
In order to achieve accurate attitude measurement and smooth navigation controlling of unmanned surface vehicle (USV), a visual horizon tracking method based on Kalman filter has been proposed. Firstly, the approximate parameters of the visual horizon are estimated according to the predictive camera attitude, and the candidate image pixels are obtained in a small region of interest around the predicted...
Recent studies have shown that 3D imaging provides some unique advantages over traditional 2D imaging for minimal invasive surgery. However, most existing endoscopes still use single-lens cameras, and the use of dual-lens 3D imaging techniques is still limited. This paper proposes an approach to enabling 3D imaging from a single-lens endoscope by automatically synthesizing stereoscopic views from...
In reverse engineering (RE) or rapid prototyping of a complex 3D object, there is often a need to scan a complete 3D model using laser digitizers. However, most digitizers scan objects in a 2.5D way such that the multiple data sets need to be aligned and integrated. In this paper a kind of new method applying to RE which composed of digital close-range industrial photogrammetry and surface scanner...
While the wireless endoscopic capsule examining human's large gastrointestinal (GI) cavity, such as stomach and large intestine, many interested spots are omitted by only one or two cameras due to its limited field of view. This paper proposes the new system architecture of the Micro-Ball for medical endoscopy application. Six cameras are embedded in the Micro-Ball for multiple fields of view, which...
The design and application of a DSP-based high speed dynamic image sampling and processing system is presented. In this system RS-422A has been designed to sample high speed image and transfer high speed data. High speed DSP(TMS320C40) and high frame rate CCD are used as the sensor of image. The optical image can conveniently be converted into digital image in this image sampling and processing system...
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