A NEW APPROACH FOR PRECISE AND STABLE DETECTION OF IMAGE SCALING CHANGES(INTERNATIONAL Workshop on Advanced Image Technology 2008)

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概要

• 論文の詳細を見る

• This paper describes a new approach for precisely and stably detecting changes in image scaling factors. DFT amplitudes for reference and input images are first transformed to a polar expression. In the transformation, the cause of detection errors is analyzed and optimal frequency filtering for reducing errors is found. Then, the shift between polar spectra for reference and test images is detected by our PSA method to estimate the scaling change. Experimental results for some typical synthetic images clearly show that the scaling factor can be stably detected with a much higher accuracy than that it can by the conventional method. Accuracy dependences on the image pattern structure and the scaling factor are also made clear.

• 一般社団法人電子情報通信学会の論文
• 2007-12-31

著者

• ITO Minoru

  Kogakuin University

• Matsunaga Issei

  Kogakuin University

• Kusajima Tomomichi

  Kogakuin University

関連論文

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• New Passive and Precise Detection of Ranges and Shapes for Both Front and Rear Surfaces of Transparent Glass Plates
• A NEW APPROACH FOR HIGHLY ACCURATE DETECTION OF IMAGE ROTATION(International Workshop on Advanced Image Technology 2006)
• A NEW APPROACH FOR PRECISE AND STABLE DETECTION OF IMAGE SCALING CHANGES(INTERNATIONAL Workshop on Advanced Image Technology 2008)
• RAPID AND PRECISE DETECTION OF ROTATION CENTER POSITIONS IN ROTATED IMAGES(INTERNATIONAL Workshop on Advanced Image Technology 2008)

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