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Tire-Imprints Image Enhancement Algorithm Based on Wavelet Transformation

To improve utilization rate of tire-imprints, a Wavelet-based algorithm for the tire-imprints image enhancement is proposed on the basis of wavelet’s theory in this paper. First, the high frequency (HF) coefficients are distinguished due to signal from those due to noise with the correlation between wavelet levels, then, increases the wavelet coefficient due to signal and suppresses those of noise. Experiment results show that the algorithm can achieve an excellent balance between the enhancement of subtle tire-imprint image detail and the avoidance of noise amplification compared with traditional image enhancement algorithm.