Visual inspection of cylindrical product's lateral surface using cameras and image processing

Abstract

Visual inspection using cameras is used here for testing the lateral surface of cylindrical products. The inspection can be carried out according to available resources by: line scan camera system, matrix camera with conical mirror system and matrix camera with multi flat mirrors system. The research is aimed to use the previous systems for testing the objects surface and making comparison between the mentioned systems. This requires suitable setting of each system to perform experiments and getting images, includes: setting of camera, light, object and mirrors. The image of each system has a different view from each other and it is quite difficult to make directly comparison between them. For this reason, the images should have the same view for its lateral surface, so called the developed view. The image of the line scan camera is used as a reference for the developed view and the images coming from matrix camera with conical mirror and multi flat mirrors are manipulated using image processing in MATLAB program to find the developed view of lateral surface of the inspected object. The developed view of the images from the previous systems is compared in terms of their resolution and accuracy, for the same tested object, in order to choose which system is suitable for the inspection task.

Publication Title

International Journal of Mathematical Models and Methods in Applied Sciences

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