Spread-spectrum embedding for video

which can resist many attacks such as video compression and noise addition

is a representative steganography method. In order to effectively detect the hidden information embedded by the method

the steganography procedure is modeled as the addition of additive Gaussian noise. By analyzing the influence on temporal correlation and spatial correlation of video owing to noise addition

a steganalysis algorithm based on spatial-temporal correlation is proposed. The algorithm uses a difference image histogram of four directions to measure the influence of spatial correlation

and temporal correlation is measured by the histogram of frame difference. Experimental results show the algorithm is easier to implement and better in detection performance than other methods.