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Image Representation and display are important problems in the fields of image processing and image analysis,computer cartography and computer graphics.The paper presents a way of representing images based on vertex chain code.This way successes to represent a binary image.After that,an algorithm of filling the region represented by the way is also presented.The algorithm deals with the points of the vertex chain code around a region,matches points in the same scan lines and uses scan lines to fill the region,and then the binary image will be reconstructed.