distortion of the image

Introduction. The purpose of work is: an assessment of distortions of images of traces on the shot bullets caused by curvature of the studied surface; working off of a technique of compensation of distortions. Theoretical analysis. Nodal point method was selected for the evaluation of image distortion and compensation. The method is based on the principle that each nodal point in the distorted image must comply with clearly known one anchor point to the undistorted image.

Introduction. The purpose of work is: a research of ability of compensation of distortions caused by deformation of bullets. Theoretical analysis. In work examined bullets with deformation in the type of local annular expansion. This type of deformation is basis for compensation of complex distortions. Nodal point method selected for the evaluation of image distortion and compensation. Model experiment. Model of deformed 9 mm bullet obtained in 1:50 scale for determination of transformation coefficients.