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Image is an interesting object. Because image can be processed even manipulated. Image can not be separated from computer. With computer images can be processed so the value increases. Many computer applications can used to process images. Image development is so rapid. But it does not touch children. There are lot of books that can be used as references for children but not yet very interesting ones. By using computer technology image will more quality and beneficial for children. There must be innovation to change the dynamics. Edge detection concept combined with computerized based methods can be a solution. Edge detection can be used to recognize patterns from image. Edge detection can identify the image edge. In this study will be designed edge detection system using laplace operators and convolution techniques. The initial image will be constructed so that a pattern in the form of dots will be formed.