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Reversible image hiding algorithm based on AMBTC algorithm

A technology of image hiding and algorithm, applied in image coding, image data processing, calculation, etc., can solve the problem of low hiding capacity and so on

Inactive Publication Date: 2016-04-13
XIHUA UNIV
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However, this algorithm obtains a lower hidden capacity

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  • Reversible image hiding algorithm based on AMBTC algorithm
  • Reversible image hiding algorithm based on AMBTC algorithm
  • Reversible image hiding algorithm based on AMBTC algorithm

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Embodiment Construction

[0050] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0051] In summary, the present invention discloses a reversible image hiding algorithm based on the AMBTC algorithm, including the RIHA algorithm, the RIHA algorithm includes the following steps, the program flow chart of the RIHA algorithm embedding and extraction process:

[0052] Step 1. Input carrier image C, initialize, i←0, j←0 and k;

[0053] Step 2. If all sub-blocks of the carrier image C have been used, then step 13. Otherwise, select the next k×k sub-block;

[0054] Step 3. Solve the synthetic information Cv; calculate Ro by the type of Cv, rotate Ro×90 degrees, and obtain C';

[0055] Step 4. According to P of the jth sub-block j , calculate W 0,j and W 1,j ; at P j In , if the number of occurrences of 1 is greater than 1, then W 1,j is set to 1; if the number of occurrences of 0 is greater than 1, then W 0,j is se...

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Abstract

The invention discloses a reversible image hiding algorithm based on an AMBTC algorithm. The reversible image hiding algorithm comprises an RIHA algorithm. The RIHA algorithm comprises the following steps: (1), inputting a carrier image C; (2), entering the step (13) if all sub-blocks of the carrier image C are used, and otherwise, selecting a next k*k sub-block; (3), solving synthetic information Cv so as to obtain C'; (4-11), calculating W0,j and W1,j according to Pj of the jth sub-block; performing Cv embedding by selecting different steps according to values of W1,j and W0,j, entering the step 12 after all secrete information is embedded, and otherwise, entering the step 2; (12), reversely rotating in Ro*90 DEG, and outputting an image; and (13), ending. The RIHA algorithm provided by the invention has relatively high capacity and relatively low image distortion; the RIHA algorithm can avoid the effectiveness loss condition of the NRDH algorithm; the RIHA algorithm is more steady and reliable; and the output image quality is further improved.

Description

technical field [0001] The invention relates to a reversible image hiding method, in particular to a reversible image hiding algorithm based on the AMBTC algorithm. Background technique [0002] Information hiding originated from the Greek word "steganos", which means "writing". In the past 10 years, due to the redundancy of digital image pixels and image compression coding, digital images have become one of the main carriers in the field of information hiding. The performance of an information hiding system is often measured by some criteria, such as robustness, undetectability, and capacity. A good information hiding algorithm should have the following characteristics: high capacity, good image quality and statistical undetectability. However, these three are mutually restrictive. Therefore, taking into account the above three at the same time, for algorithm designers, this is not only a challenge, but also an opportunity. [0003] Research on reversible information hi...

Claims

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Application Information

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IPC IPC(8): G06T9/00
CPCG06T9/00
Inventor 唐明伟
Owner XIHUA UNIV
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