Selective Contour Preservation Method for Performance Improvement of Noise Reduce Technique in Sonar Images

摘要

The selective contour preservation method for enhancing the performance of the noise reduction method for sonar images according to the present invention is a method of performing a Bayesian estimation after a discrete wavelet transform and then determining the outline of the underwater object of the sonar image, The pre-processing step in which an advanced edge enhancement technique for compensating for the coefficient is performed, thereby eliminating the phenomenon that the coefficients related to the edge, which is the main information indicating the characteristics of the underwater object, are removed locally The recognition performance of the underwater object is improved.