A REVERSIBLE WATERMARKING TECHNIQUES AND APPLYING COPYRIGHT PROTECT OF 3D IMAGES

Abstract

Currently, 3D (three-dimensional) technology has developed strongly to meet people's entertainment needs, such as 3D images, movies on virtual reality glasses, 3D televisions, etc. Author of these works also needs to be protected by copyright when it is brought to the market. Therefore, digital watermarking is considered an effective tool to protect databases on insecure exchange environments. From that fact, the paper presents 3D image processing techniques (three-dimensional) including: 3D image reconstruction technique and reversible watermarking technique based on discrete cosine transform method combined with code Watermarking patternization helps to embed and separate quality watermark records. According to (Lei Chen, 2020), a common attack is a JPEG (Joint Photographic Experts Group) compression attack to evaluate the effectiveness of information hiding. The evaluation results show that the image quality is still good, reflected in the maximum signal-to-noise ratio value of over 35dB and the watermark separation is still guaranteed in that the bit error rate is less than 1.5% despite the attack. JPEG compression is reduced to as low as 65%.