Effective image compression and encryption amalgamation method
An image compression and image technology, applied in image coding, image data processing, complex mathematical operations, etc., can solve the problem that the 56-bit key length is difficult to resist exhaustive attacks, and achieve the effect of reducing the amount of calculation
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[0018] Figures 1, 2, and 3 show examples of wavelet decomposition of actual images. It reveals that the energy of the digital image after wavelet transform is highly concentrated in the smooth version (low frequency part or brightness sub-image). In addition, due to the typesetting requirements of the article, Figures 1, 2, 3, 5, and 6 are the results of using WINDOWS drawing tools to reduce the length and width by one time, which all bring a small amount of distortion, but none of them hinder the explanation of the problem.
[0019] Combine below Figure 4 The specific implementation steps of the method of the present invention are described in detail.
[0020] Step 1: For original image input, digital images (such as images in BMP format) collected by various image acquisition devices can be input. The experimental image of the method of the present invention is as shown in FIG. 1 : a Lena image of 256×256×8, which is a standard use case of image processing experiments.
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