Abstract
Image compression technology and copyright protection are certainly the important technologies for free exchange of multimedia. For compression of an image, we propose a color Absolute Moment Block Trucation Coding (AMBTC) method using a common bit-plane created by k-means. In addition, a data hiding method based on a color AMBTC using Optimal Pixel Adjustment Process (OPAP) was proposed for copyright protection and confidential secret communication. The number of quantization levels of the proposed color AMBTC is nine per block. Therefore, the edge of the compressed color image can be expressed more delicately. As a result of the simulation, it can be seen that the edge of the image of the color AMBTC is close to the original image. Moreover, the data hiding performance of the proposed method also obtained excellent results. For the experiment, we measured the quality of the image using the Color Difference (CD) we proposed, and the measurement result was very satisfactory.
Highlights
Many people participated in the production and distribution of various media contents with smartphones
When a color image is compressed with traditional color Absolute Moment Block Truncation Coding (BTC) (AMBTC), three bit-planes are used per block, but the method suggested uses a common bit-plane to improve compression performance
data hiding (DH) Embedding Procedure In Section 4.1, we introduced a method of compressing the original image with the proposed color AMBTC encoding method
Summary
Many people participated in the production and distribution of various media contents with smartphones. Interest in digital content ownership is increasing more than ever. On the other hand, advanced image processing tools and experienced designers can make the authenticity of digital images difficult [1]. “to see is to believe” has become meaningless. Data hiding (DH) [2] is emerging as a potential solution. DH is used for intellectual property protection, content authentication, annotation, watermarking technology, etc., and supports confidential communication. The difference between DH and watermarking technology is that watermarking technology reveals that digital contents are applied with watermarking technology, but DH technology protects digital contents by hiding the existence of secret information
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