Summary
International Technical Conference on Circuits/Systems, Computers and Communications
2008
Session Number:A3
Session:
Number:A3-3
A Scrambling Method for JPEG Coded Images Enabling Image Retrieval from Scrambled Images
Ryo Hosaka, Fitri Arnia, Masaaki Fujiyoshi, Hitoshi Kiya,
pp.-
Publication Date:2008/7/7
Online ISSN:2188-5079
Summary:
This paper proposes a scrambling method for JPEG coded images and an image retrieval method for scrambled JPEG images. The proposed method scrambles JPEG images and retrieves a identical image or similar images from scrambled images. By utilizing the positive and negative signs of discrete cosine transformed coefficients as the characteristics, the method is able to retrieve the images which are compressed with the same and different ratios as the query image, without descrambling and JPEG decording.