Transfer function design method based on comb wave transformation in underwater acoustic data volume rendering

The invention discloses a transfer function design method based on comb wave transformation in underwater acoustic data volume rendering. The method comprises the following steps of: 1, acquiring original three-dimensional scalar data through underwater sonar, storing the original three-dimensional scalar data in a three-dimensional matrix form, and performing three-dimensional non-subsampled Brushlet transformation to obtain each transformed sub-volume; 2, performing Brushlet threshold de-noising processing on each sub-volume; 3, extracting a plurality of textural features such as energy, contrast, entropy, inertia and the like of data points in each sub-volume of the front half quadrant by using a gray level co-occurrence matrix; 4, cascading the plurality of texture features extracted in the step 3 into a high-dimensional feature vector as a feature vector of original data, and performing data classification by using a fuzzy C-means clustering algorithm; and 5, respectively settingcorresponding optical att