Fig. 3From: Perceptual hashing method for video content authentication with maximized robustnessAlgorithm for finding optimal features offset and robustness. Here show the main steps for optimization problem solving. Inputs are features space and some coefficients. Outputs are the optimal value for feature offset and maximum robustness. The steps include fish initialization, fish individual refresh, fish collective-instinctive movement and fish collective-volitive movementBack to article page