Application traceability management method and device, equipment and storage medium
A technology for traceability management and target application, applied in the field of application traceability management methods, devices, equipment and storage media, can solve the problems of inability to effectively protect copyright and privacy, destroying the original content of multimedia information, and poor watermark concealment, etc. The effect of realizing copyright and privacy protection, increasing difficulty, and improving versatility
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Embodiment approach 1
[0150] Embodiment 1: Multiple first frequency domain elements in the first frequency domain matrix are respectively multiplied by preset energy coefficients to obtain a third frequency domain matrix, wherein the energy coefficients are greater than 0 and less than 1. Then, a plurality of third frequency domain elements in the third frequency domain matrix are respectively added to corresponding second frequency domain elements in the second frequency domain matrix to obtain a target frequency domain matrix.
[0151] Specifically, based on actual needs, a value from 0 to 1 can be selected as the energy coefficient in advance. The first frequency domain matrix, the second frequency domain matrix and the third frequency domain matrix are all two-dimensional frequency domain matrices, and the three frequency domain matrices The number of elements in the domain matrix is the same. For each first frequency domain element in the first frequency domain matrix, after multiplying the ...
Embodiment approach 2
[0155] Embodiment 2: A plurality of first frequency domain elements in the first frequency domain matrix are respectively added to corresponding second frequency domain elements in the second frequency domain matrix to obtain a target frequency domain matrix.
[0156] For example, the first frequency domain matrix is set to be a 3*3 frequency domain matrix, and the second frequency domain matrix is set to be a 3*3 frequency domain matrix. Express the first frequency domain element in the first row and first column in the first frequency domain matrix as , the second frequency domain element in the first row and first column in the second frequency domain matrix is expressed as . The first frequency domain element with the second frequency domain element Add to get the target frequency domain elements in the first row and first column of the target frequency domain matrix . It should be noted that the way to obtain the target frequency domain elements in other p...
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