A secure image data transmission system supporting transparent transcoding
A technology for image data and secure transmission, applied in the field of image data security transmission systems, can solve the problems of difficulty in authentication methods, increasing the operational complexity of intermediate transcoding nodes, and inability to ensure the security of image content.
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[0051] Such as figure 1 As shown, the system of the present invention is deployed in the network, mainly including three types of network nodes: sending node (image data server), intermediate transcoding node and receiving node (including different types of terminal devices, such as desktop computers, mobile smart devices, etc.) . The entire image data security distribution system includes the following modules:
[0052] Computing perceptual hash module: used to execute image perceptual hash algorithm and generate perceptual hash value of image. Image perceptual hash algorithm is divided into three parts: preprocessing, feature extraction and postprocessing; this module takes the original image as input Data, perform perceptual feature extraction to obtain a perceptual hash value, and then input the perceptual hash value of the image to the code stream packaging module.
[0053] Compression coding module: used to execute image data compression algorithm and generate scalable...
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