A Measuring System For Pyramid Prism's Angle Error

In order to satisfy the need of efficiency and cost in manufacturing pyramid prism, we should study its measuring system so that we improve the measuring system. This paper dedicates to these studies: mathematics modeling, image processing, image gathering and data management, test data and its analysis.In the part of mathematics modeling, firstly, we get the relationships between rectangular error of pyramid prism and crossing angle where the pyramid prism's incidence beam intersects its emergence beam by reflection law and refraction law in the vector form on the basis of establishing rectangular coordinate frame, secondly, we compute corresponding area in every pyramid prism's plane to which 6 emergence beams come from pyramid prim by the ray's traveling path across pyramid prism, finally, we gain the relationships between images and errors of the crossing angles where each two pyramid prism's planes intersect on the foundation of combining optical system with the situations and directions of the 6 emergence beams.In the part of image processing, firstly, such as image enhancement technique, image segmentation technique, object edge detection, image matching arithmetic, binary image processing, and image measuring method , etc. are introduced; then the image processing course including image reading, image conversion, grayscale image converted binary image, conforming image positional coordinate, image reparation, image preprocessing(it is petal), extracting diagnostic parameters, and outputting results is described basing images gotten actuallyIn the part of image gathering and data management, the paper introduces how to gather and analyze images in VC environment and how to manage database using ACCESS.Data gotten from test are cleared up and analyzed, then tolerance analysis is made, lastly the inclusion is educed in the part of test and their analysis.