Hiding secret data in images via predictive coding

  • Authors:
  • Yuan-Hui Yu;Chin-Chen Chang;Yu-Chen Hu

  • Affiliations:
  • Department of Computer Science and Information Engineering, National Chung Cheng University, Chiayi, Taiwan 621, ROC;Department of Computer Science and Information Engineering, National Chung Cheng University, Chiayi, Taiwan 621, ROC;Department of Computer Science and Information Engineering, Providence University, Taichung, Taiwan 433, ROC

  • Venue:
  • Pattern Recognition
  • Year:
  • 2005

Quantified Score

Hi-index 0.01

Visualization

Abstract

This paper presents a prediction-based image-hiding scheme that embeds secret data into compression codes during image compression. This scheme employs a two-stage structure: a prediction stage and an entropy coding stage. The secret data is embedded into the difference values of a given image after the prediction stage is performed. According to the experimental results, the image quality is better than Jpeg-Jsteg and its improved scheme (Inform. Sci. 141 (1-2) (2002) 123). The average image quality of the stego-images in the proposed scheme is greater than 50dB when the hiding capacity is 1 bit per pixel, whereas those values in Jpeg-Jsteg and scheme in Chang et al. (Inform. Sci. 141 (1-2) (2002) 123) are 37.04 and 33.73dB, respectively. The hiding capacity of the proposed scheme is 65,536 bits when the hiding capacity is 1 bit per pixel, whereas it is 53,248 bits in scheme (Inform. Sci. 141 (1-2) (2002) 123) and less than 3000 bits in Jpeg-Jsteg.