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Journal of Information Science and Engineering, Vol. 22 No. 1, pp. 163-174 (January 2006)

A Robust Image Hiding Method Using Wavelet Technique*

Chih-Yang Lin and Yu-Tai Ching
Department of Computer and Information Science
National Chiao Tung University
Hsinchu, 300 Taiwan

A robust wavelet-based image hiding methods, that hide still images, E, inside a covered image, C, to establish a composite image, P, are presented. We can hide up to three full-size embedded images inside a cover image while maintaining the quality of the composite image. The embedded images retain easily recognizable when extracted. The embedded images can be extracted fairly completely even when lossy compression or cropping is applied to the composite image. The proposed method does not require the original cover image to extract the embedded image.

Keywords: image hiding, wavelet transform, watermark, compression, multiresolution

Full Text () Retrieve PDF document (200601_09.pdf)

Received August 4, 2003; revised December 17, 2004; accepted February 24, 2005.
Communicated by Pao-Choo Chung.
* This work was supported in part by the National Science Council of Taiwan, R.O.C., under grant No. NSC-90-2213-E-009-119.