A visually-lossless data hiding method based on histogram modification

This paper proposes a new method of visually-lossless data hiding. The proposed method firstly applies a nonlinear quantization to an original image accordingly to the size of a payload to be hidden. The method, then, embeds the payload to the quantized image based on a histogram modification-based lossless data hiding technique. The hidden payload can be extracted reversibly and be completely removed from the image to recover the quantized image. Experimental results show the effectiveness of the proposed method.