Abstract: The commonly-used methods of imperceptibility evaluation for information hiding algorithms can not express
the subjective evaluation comprehensively and evaluate the performance of the algorithms accurately. To solve this problem,a new method based on visual masking is proposed. It combines the linear relationship between the perceptual quality of image and its Mean Square Error(MSE),and the perceptual properties of texture and luminance,with the aim of improving the perceptual quality. In this method,the linear expression between the perceptual quality and MSE is given,among which the luminance and the gradient can be used to calculate the luminance and the texture weight coefficients respectively. By weighting the expression linearly,a global performance of imperceptibility of the stego image is obtained. Experimental results demonstrate that the proposal outperforms the conventional Peak Signal to Noise Ratio (PSNR) in higher efficiency and realizing the consistency of image quality of subjective and objective evaluation.
to Noise Ratio(PSNR)