本文選題：D測量 + 雙線投影��； 參考：《紅外與激光工程》2017年04期

【摘要】：將雙目傳感器和線結(jié)構(gòu)光有機地結(jié)合到一起,設(shè)計了一套能夠?qū)Υ蟪叽绫粶y物進行無導(dǎo)軌三維掃描的測量系統(tǒng)。通過標(biāo)定實現(xiàn)雙目傳感器與結(jié)構(gòu)光傳感器坐標(biāo)系的統(tǒng)一。提出了一種雙線投影模型,實現(xiàn)了雙目標(biāo)記點的立體匹配和標(biāo)記點傳感器坐標(biāo)的測量。設(shè)計了基于線面約束的結(jié)構(gòu)光測量模型,實現(xiàn)了物體表面光條三維信息的獲取。采用空間幾何相對不變性原則實現(xiàn)標(biāo)記點傳感器坐標(biāo)和世界坐標(biāo)的全局匹配,進而確定在測量位置處傳感器坐標(biāo)系與世界坐標(biāo)系的轉(zhuǎn)換關(guān)系。最終將傳感器實時掃描測量的物體表面的三維點云數(shù)據(jù)轉(zhuǎn)換到世界坐標(biāo)系下,實現(xiàn)對被測物三維的掃描測量,工作距離下掃描測量精度優(yōu)于0.08 mm。
[Abstract]:The binocular sensor and the linear structured light are combined organically to design a measuring system which can scan the large size object without guide rail. The coordinate system of binocular sensor and structured light sensor is unified by calibration. A bimline projection model is proposed to realize the stereo matching of binocular marker points and the measurement of sensor coordinates. The structure light measurement model based on line and surface constraints is designed, and the 3D information of the light strip on the surface of the object is obtained. The principle of relative invariance of space geometry is used to realize the global matching between the sensor coordinates and the world coordinates, and the transformation relationship between the sensor coordinate system and the world coordinate system at the measuring position is determined. Finally, the 3D point cloud data of the object surface measured by the sensor are converted to the world coordinate system, and the 3D scanning measurement of the object is realized. The precision of scanning measurement is better than 0.08 mm. at the working distance.
【作者單位】： 天津大學(xué)精密測試技術(shù)及儀器國家重點實驗室;
【基金】：國家自然科學(xué)基金(51375339)
【分類號】：TH741;TP212
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本文編號：1804906