Table 1: The embedding method by prime .

Range Embedding technique Pixel block

LSB1 per 1 pixel
LSB2 per 1 pixel
LSB1 and LSB2 per 2 pixels
LSB2 per 2 pixels
LSB1 and LSB2 per 3 pixels
LSB2 per 3 pixels
LSB1 and LSB2 per 4 pixels
LSB2 per 4 pixels