从公安现场勘查的实际情况出发,在已知焦距,未知拍照时的物距、像距和圆柱体半径的条件下,给出变形矫正的解析算法利用计算机成功地对圆柱体上痕迹变形影像进行了矫正,它不仅改善、祢补了光学矫正方法的不足,还不受矫正条件的限制。提高了矫正的准确度,这对公安的实际办案是非常必要和十分有应用价值的。同时,对矫正后的痕迹变形影像信息增量给出了定量的计算方法。 Based on the actual situation of public security scene investigation, under the conditions of known focal length, unknown object distance, image distance and cylinder radius, an analytical algorithm of deformation correction is given. Correction, it not only improves, you make up for the lack of optical correction methods, but also not subject to correction conditions. Improve the accuracy of correction, which is very necessary and very practical value of the actual handling of public security. At the same time, a quantitative calculation method is given for the incremental image information of the deformed marks.