With the rapid development of digital media, QR codes have become widely used as an important medium for information transmission. However, this also presents serious security challenges, such as frequent image infrin...
详细信息
With the rapid development of digital media, QR codes have become widely used as an important medium for information transmission. However, this also presents serious security challenges, such as frequent image infringement and inevitable compression and scaling issues during data transfer. These challenges directly threaten the effectiveness and integrity of image information, and effective protection measures must be taken. Under this background, digital watermarking technology comes into being as an innovative method to enhance security. This paper presents an innovative Hybrid Particle Swarm Optimization and Gray Wolf optimization (HPG) algorithm, which combines the advantages of PSO and overcomes the limitations of traditional GWO algorithm. The algorithm is further improved by using Bernoulli chaotic mapping and nonlinear convergence factor. The experiments focus on the global and local search balance of the algorithm and its ability to resist repeated scaling attacks. The results show that the nonlinear convergence factor of HPG algorithm slows down the iteration speed at the initial stage, strengthens the global search, and avoids falling into the local optimal. In the later stage, the iteration is accelerated to improve the local search speed and convergence efficiency, thus optimizing the performance of the algorithm and ensuring the safety and quality of image information. In addition, the algorithm has better performance in balancing imperceptibility and robustness of digital watermarking, and its peak signal-to-noise ratio (PSNR) is higher. Even with many scaling iterations, the normalized correlation (NC) value is still close to 1. Compared with the existing typical algorithms, HPG algorithm is more robust to repeated scaling attacks.
Image watermarking particularly has attracted lot of attention in the research community. In this paper we propose a multiple watermarking based on DWT with the motivation to maintain the quality of the image. The ori...
详细信息
ISBN:
(纸本)9781467356930
Image watermarking particularly has attracted lot of attention in the research community. In this paper we propose a multiple watermarking based on DWT with the motivation to maintain the quality of the image. The original image was interlacing into even and odd rows of images and deinterlaces the two images. For hiding watermark images wavelet based approach is employed in two deinterlace images. Stack the two watermarked images in to single image by introducing zeros of even and odd rows in the two watermarked images, At the end again interlacing and deinterlacing of an images and extracts both the watermark Images. Simulation results show the watermark imperceptibility and robustness. Also the quality of the watermarked image is excellent and there is strong resistant against many geometrical attacks.
Recent advancement in communication technology protection of digital data is a severe problem. In this paper we propose a watermarking technique based on wavelet domain and sharing of an image with the motivation to m...
详细信息
ISBN:
(纸本)9781467357869;9781467357876
Recent advancement in communication technology protection of digital data is a severe problem. In this paper we propose a watermarking technique based on wavelet domain and sharing of an image with the motivation to maintain the quality of the image. The original image is diagonally shared and one of the shares is horizontally merged and watermarking process is employed in fusion image using wavelet. Further breakaway the pixels into normal share. Stack the two watermarked images in to single image. At the receiver end again shared and merged a watermarked share in horizontally and extracts a watermark Image. Simulation results indicate that the proposed watermarking scheme is highly robust and does not reduce the quality of watermark image.
Recent advancement in communication technology protection of digital data is a severe problem. In this paper we propose a watermarking technique based on wavelet domain and sharing of an image with the motivation to m...
详细信息
ISBN:
(纸本)9781467357869
Recent advancement in communication technology protection of digital data is a severe problem. In this paper we propose a watermarking technique based on wavelet domain and sharing of an image with the motivation to maintain the quality of the image. The original image is diagonally shared and one of the shares is horizontally merged and watermarking process is employed in fusion image using wavelet. Further breakaway the pixels into normal share. Stack the two watermarked images in to single image. At the receiver end again shared and merged a watermarked share in horizontally and extracts a watermark Image. Simulation results indicate that the proposed watermarking scheme is highly robust and does not reduce the quality of watermark image.
暂无评论