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This paper proposes that multifractal analysis method be adopted for the analysis of edge images detected with classical edge detectors. We analyze the direct multifractal analysis method based on box-counting method with experimental images, and determine the value of f(q) and a(q). By using this method, we find that the edge images detected by difference edge detectors are similar, but, the multifractal micro-structures of them are different, and, that of edge images detected by Prewitt and Roberts detector are parallel, and so do that by Log and Zerocross detector.

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