کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
494249 862229 2007 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Novel image copy detection with rotating tolerance
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
پیش نمایش صفحه اول مقاله
Novel image copy detection with rotating tolerance
چکیده انگلیسی

In 2003, Kim applied the discrete cosine transform (DCT) technique to propose a content-based image copy detection method. He successfully detected the copies both with and without modifications, and his method is the first to detect the copies with water coloring and twirling modifications. However, Kim’s method can only detect copies having a 180° rotation. When copies have a 90° or 270° rotation, Kim’s method fails to discover them. Also, his method cannot deal with copies having only minor rotations of 1° or 5°, and so on. To conquer this weakness, we propose an elliptical track division strategy to extract two kinds of features in the design of our proposed methods. Furthermore, we propose a dynamic center point detection mechanism for the elliptical track of each image to deal with the shifting process. The experimental results confirm that both proposed methods can successfully capture the features of an image even if it is shifted, cropped or rotated to any degree. In addition, our hybrid method can further provide accurate detection performance for a variety of manipulations.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Systems and Software - Volume 80, Issue 7, July 2007, Pages 1057–1069
نویسندگان
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