Perceptual image hashing sensitive to content modification
A perceptual image hashing method based on the image content and color distribution was proposed.The image was scaled to a fixed size and divided into blocks.Each block was then classified semantically into complex or plain according to the ratio of the first two singular values of its luminance mat...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Journal on Communications
2012-11-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2012.11.023/ |
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| Summary: | A perceptual image hashing method based on the image content and color distribution was proposed.The image was scaled to a fixed size and divided into blocks.Each block was then classified semantically into complex or plain according to the ratio of the first two singular values of its luminance matrix so as to give a table of complexity indices.RGB components of each complex block were used to form a color-feature vector,which was combined with the complexity table and encrypted to produce the image hash.Experiments show that the hash is robust against content-preserving image manipulations such as JPEG compression,smoothing and re-scaling,and sensitive to tampering of the image content. |
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| ISSN: | 1000-436X |