The purpose of this research is the search for the image processing techniques that are used to specify the image and edge image processing techniques, with the boundary will be used for research by the technique used to make the experiment. There are 5 techniques: Roberts, Prewitt, Sobel Method Method Method Method and the Laplacian of Gaussian, Canny technique is an experimental Method on the phapdok orchids, Paphiopedilum species species 14, 20 images, each species will use all four file extension in the Joint Photographic Experts Group, is the test (.JPEG), Portable Network Graphics (.PNG), Graphics Inter.Change Format (.GIF), Bitmap (.BMP), a total of 1120 photos, each image is processed on the MATHLAB R2008B program to compare the power of the image (the Image Energy) which is displayed in the Root Mean Square Error format (RMSE) to compare results of the Canny algorithm Method is appropriate because the image is applied to the value of the Method is less Canny RMSE than other algorithms.
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