Studying the Effect of Errors in Matching Video Frames on 3D Measurements of Moving Objects using Close-Range PhotogrammetryStudying the Effect of Errors in Matching Video Frames on 3D Measurements of Moving Objects using Close-Range Photogrammetry

要旨

Digital close-range photogrammetry became one of the most important measurements tools for the moving objects. To take measurements of moving objects, at least two images must be taken from different positions at the same instance. To take images at the same instant, two cameras must be connected together using special equipment to give the order to the camera once a button has been pressed. To avoid complication and to save money, two video cameras can be used from different positions. Once the movies are transferred to the computer, two images (one frame from each movie) can be selected as right and left images. Miss-selection of any of the frames or both will affect the 3D measurements accuracy. Theoretical analysis and practical test have been done to find out the influence of this miss-selection on the accuracy of the close-range photogrammetric 3D measurements for the moving objects using two video cameras from different locations.