On Bas-relief Modeling Algorithm For Custom-tailored Portrait Based On 3D Models

Relief is a characteristic art,which has been developed from traditional artificial production to digital,but it mainly depends on manual design.However,with the development of 3D modeling technology,the combination of 3D portrait model and relief is conducive to the development of relief digitization,and meet the needs of people for customized portrait products.Therefore this is a meaningful research.In this paper,the method of building 3D model from original 2D photos is briefly introduced,and the process of obtaining bas-relief is analyzed in detail.Finally,a method of modeling bas-relief with watermark is proposed.The main contributions of this paper are:(1)A 3D model acquisition scheme is proposed.It can improve the acquisition efficiency and the quality,provide good raw data for the final 3D human image model,and obtain a high-precision stereo portrait model.(2)This paper proposes a shallow relief modeling algorithm based on the full variation,and is more clear and suitable for the image de-noising algorithm.Finally,from the two aspects of subjective and objective,the experimental results are compared and verified.(3)The existing bas-relief modeling algorithms do not combine watermark.A method of modeling bas-relief based on depth map watermarking is proposed.By combining the 2D cepstrum domain algorithm with the depth image,the watermark is embedded into the bas-relief,and then the embossed relief is attacked by the relief editor.Finally,the watermark is extracted from the corresponding grayscale image of the embossed relief after editing.The experimental results are verified by the watermark evaluation standard.