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Data Hiding Method Based on Graph Coloring and Pixel Block‘s Correlation in Color Image | ||
| AUT Journal of Electrical Engineering | ||
| مقاله 2، دوره 49، شماره 2، اسفند 2017، صفحه 123-130 اصل مقاله (909.25 K) | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22060/eej.2017.10676.4868 | ||
| نویسندگان | ||
| G. Ghadimi* 1؛ M. Nejati Jahromi2؛ E. Ghaemi Ghaemi3؛ A. H. Heydari4 | ||
| 1Dept. of Electrical Engineering, Emam Ali University, Tehran, Iran | ||
| 2Dept. of Electrical Engineering, Shahid Sattary Aeronautical University of Science and Technology, Tehran, Iran | ||
| 3Dept. of Electrical Engineering, Ahar University, Ahar, Iran | ||
| 4Department of Electrical and Electronic Engineering, Amirkabir University of Technology, Tehran, Iran | ||
| چکیده | ||
| An optimized method for data hiding into a digital color image in spatial domain is provided. The graph coloring theory with different color numbers is applied. To enhance the security of this method, block correlations method in an image is used. Experimental results show that with the same PSNR, the capacity is improved by %8, and also security has increased in the method compared with other methods. In the correlation block-based image method, data hiding capacity of the host image varies according to image type and defined threshold level. In the proposed algorithm, during graph explanation, independent pixels placed side by side were colored. Then, based on “pixel block correlation data hiding” process is done. This method grows the security and capacity of hiding process. Besides, this increases the effects of image format and correlation threshold on security and capacity. | ||
| کلیدواژهها | ||
| Data hiding؛ Graph coloring؛ Correlation؛ Threshold؛ Security؛ Color number | ||
| مراجع | ||
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