發(fā)布時(shí)間：2018-07-17 05:16

【摘要】：針對單目大視場平面測量時(shí),測量平面內(nèi)不便布置靶標(biāo)和大尺寸靶標(biāo)難以制作的問題,提出一種利用布設(shè)在平行面上的小尺寸平面靶標(biāo)進(jìn)行標(biāo)定的方法。選定一個(gè)平行面為標(biāo)定平面,將單個(gè)小尺寸平面靶標(biāo)合理放置在標(biāo)定平面的多個(gè)位置拍攝,整合構(gòu)造出一個(gè)大尺寸平面靶標(biāo),采用非線性優(yōu)化的方法進(jìn)行攝像機(jī)內(nèi)、外參的優(yōu)化求解。結(jié)合平行約束和距離參數(shù)得到測量平面與圖像平面的單應(yīng)矩陣,實(shí)現(xiàn)大視場平面測量。建立平面測量的精度模型,對測量區(qū)域各處精度的分布以及影響測量精度的攝像機(jī)內(nèi)參、安裝角度和高度等因素進(jìn)行理論分析和實(shí)驗(yàn)驗(yàn)證。實(shí)驗(yàn)結(jié)果表明:該方法可有效保證整體測量精度;在上底920mm、下底1360mm、高920mm的梯形視場內(nèi)標(biāo)定,距標(biāo)定平面200mm的測量平面內(nèi)的測量誤差低于0.6%;測量區(qū)域內(nèi)各處誤差的分布趨勢與精度模型一致。此方法完全適用于大視場平面測量。
[Abstract]:In order to solve the problem that it is difficult to make the target and the large size target in the measurement plane, a calibration method is proposed by using the small size target placed on the parallel surface. A parallel plane is chosen as the calibration plane, and a single small plane target is reasonably placed in several locations of the calibration plane for shooting, and a large size plane target is integrated and constructed, and the nonlinear optimization method is used to carry out the camera. Optimization of external parameters. Combining parallel constraints and distance parameters, the monoclinic matrix of the measurement plane and the image plane is obtained, and the large field of view plane measurement is realized. The precision model of plane measurement is established. The theoretical analysis and experimental verification are carried out on the distribution of accuracy in different parts of the measurement area and the factors affecting the measurement accuracy, such as camera internal parameters, installation angle and height, and so on. The experimental results show that this method can effectively guarantee the overall measurement accuracy, and calibrate in the trapezoidal field of view with the upper bottom 920mm, the lower bottom 1360mm and the high 920mm field of view. The measurement error in the measurement plane of 200mm from the calibrated plane is less than 0.6, and the distribution trend of the errors in the measurement area is consistent with the precision model. This method is fully applicable to the measurement of large field of view plane.
【作者單位】： 北京航空航天大學(xué)機(jī)器人研究所;
【分類號】：TP391.41

【相似文獻(xiàn)】

相關(guān)期刊論文 前3條

1 陳龍飛,胡軍;高等級公路平面測量中BASIC程序應(yīng)用探討[J];安徽水利水電職業(yè)技術(shù)學(xué)院學(xué)報(bào);2004年04期

2 劉潤,阮宗才,韋穗;平面測量問題中單應(yīng)矩陣的算法研究[J];系統(tǒng)仿真學(xué)報(bào);2001年S2期

3 張振;徐楓;沈潔;韓磊;徐立中;;基于變高單應(yīng)的單目視覺平面測量方法[J];儀器儀表學(xué)報(bào);2014年08期

，

本文編號：2129181