Color image replication tamper detection method based on local quaternion index moment
A quaternion index moment, color image technology, applied in the field of image processing, can solve the problems of high time complexity of the algorithm, unsatisfactory detection of tampered areas, etc.
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[0052] A kind of color image duplication tampering detection method based on local quaternion exponent moments, according to the following steps:
[0053] Step 1: Use the entropy-based superpixel segmentation algorithm combined with non-subsampling Shearlet transform to perform adaptive superpixel segmentation on the image to be detected after Gaussian smoothing filter preprocessing, as follows:
[0054]Step 11: Read the image to be detected, and use Gaussian smoothing filter for preprocessing to remove noise;
[0055] Step 12: Perform non-downsampled Shearlet transformation on the image obtained after preprocessing in step 11, and adaptively initialize the number of superpixel blocks;
[0056] Step 121: Read the preprocessed image and perform four-level non-subsampling Shearlet transformation, and calculate the proportion of low-frequency energy to the total energy, where represents low-frequency energy, represents high-frequency energy, Indicates the proportion of low-...
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