机械研究与应用
機械研究與應用
궤계연구여응용
MECHANICAL RESEARCH & APPLICATION
2014年
1期
79-81,84
,共4页
李世成%娄磊%顾海明%刘志新
李世成%婁磊%顧海明%劉誌新
리세성%루뢰%고해명%류지신
图像分析%成像模型%景深%摄像机摆放位置%参考平面
圖像分析%成像模型%景深%攝像機襬放位置%參攷平麵
도상분석%성상모형%경심%섭상궤파방위치%삼고평면
image analysis%imaging model%depth of field%camera position%reference plane
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。
針對視覺偏差導緻汽車踫撞試驗中結果誤差較大的缺點，選取景深、攝像機襬放位置、攝像機偏轉角度等因素為分析對象，推導得齣三項因素對測試結果誤差的影響規律。結閤幾何分析結果，設計瞭攜帶有激光髮射裝置的可移動式攝像夾具，從而剋服瞭攝像機位置及角度對誤差的影響，提高瞭汽車踫撞試驗中圖像分析的精度。
침대시각편차도치기차팽당시험중결과오차교대적결점，선취경심、섭상궤파방위치、섭상궤편전각도등인소위분석대상，추도득출삼항인소대측시결과오차적영향규률。결합궤하분석결과，설계료휴대유격광발사장치적가이동식섭상협구，종이극복료섭상궤위치급각도대오차적영향，제고료기차팽당시험중도상분석적정도。
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.
