【摘要】 在精度要求不高的情况下,可以利用照片成像的原理解决很多测距问题。首先讨论在拍照过程中照相机外框底边与需要测量线段所在的平面平行情况,接着将问题扩展到不平行的一般情况。在此过程中,同时建立了所测平面与成像平面的坐标点转换关系,以及求解线段长度的一般表达式。然后分析了该方法在实际运用中可能产生的测量误差及其产生的原因,并提出了切实可行的减小误差的方法。更多还原

【Abstract】 Based on the mechanism of photo imaging, this paper analyzed the distance measuring method of photo imaging and built a general model of distance measuring. During the course of taking photos, it is first discussed that the camera outline border is parallel with the plane, then, the unparallel is extended. A coordinate transformation relation between imaging plane and the measured plane, and a expression of line length were built. The errors and the causation of the errors were both analyzed for the method. Finally, a feasible method to reducing these errors was presented.更多还原