基于可逆性的图像信息隐藏系统设计

Design of image information hiding system based on reversibility

传统图像信息处理系统已无法满足日益复杂的图像信息,故设计基于可逆性的图像信息隐藏系统。通过图像采集模块采集待处理图像后发送至FIFO存储模块,FIFO存储模块存储图像信息并发送至S3C44BOX型AMR处理器,AMR处理器中的数据处理模块对图像实施灰度拉伸处理,拉伸处理后对图像实施阈值分割处理,利用可逆信息隐藏算法隐藏图像信息,经过逆运算提取隐藏图像信息并利用LCD显示模块输出图像。图像信息处理过程是通过数据通信模块,利用PCI接口完成图像信息处理系统与计算机交互,实现图像信息处理系统的图像信息处理功能。实验结果表明,采用该系统可有效处理图像信息,并且处理10幅图像信息平均隐藏容量高达9558.2 bit,输出图像信噪比高于45 dB,处理速率最高达4.251 Gb/s,充分验证了该系统的有效性。

As the traditional image information processing systems have been unable to meet increasingly complex image information,an image information hiding system based on reversibility is designed.The image acquisition module is used to collect the image to be processed and send it to the FIFO storage module.The FIFO storage module is used to store the image information and send it to the S3 C44 BOX AMR processor.The data processing module of AMR processor is used to implement the gray stretch processing on the image,and then carry out the threshold segmentation processing.The image information is hidden by means of the reversible information hiding algorithm,and the hidden image information is extracted by means of the inverse operation and outputted by the extract the LCD display module.In the process of image information processing,the interaction between image information processing system and computer is realized by the PCI interface and the data communication module,so as to realize the image information process function of the image information system.The experimental results show that the system can effectively process image information,the average hidden capacity of processing10 images information is as high as 9558.2 bit,the signal-to-noise ratio of the output image is higher than 45 dB,and the processing speed up to 4.251 Gb/s,which fully verifies the effectiveness of the system.