摘要
针对视觉偏差导致汽车碰撞试验中结果误差较大的缺点,选取景深、摄像机摆放位置、摄像机偏转角度等因素为分析对象,推导得出三项因素对测试结果误差的影响规律。结合几何分析结果,设计了携带有激光发射装置的可移动式摄像夹具,从而克服了摄像机位置及角度对误差的影响,提高了汽车碰撞试验中图像分析的精度。
Aiming at the error in the car crash test result that caused by visual deviations, depth of field, camera position and camera deflection are selected as analysis objects and the influence law on the test result is found by derivation.Combined with the geometric analysis result, a portable camera fixture which carries a laser device is designed so that the influence on test er-ror that brought by camera position and deflection is overcome and the accuracy of image analysis in car crash test is improved.
出处
《机械研究与应用》
2014年第1期79-81,84,共4页
Mechanical Research & Application
关键词
图像分析
成像模型
景深
摄像机摆放位置
参考平面
image analysis, imaging model, depth of field, camera position, reference plane
