Automatic identifying method of artery plaque type based on ultrasonic image in blood vessel

The invention relates to an automatic identifying method of artery plaque type based on an ultrasonic image in a blood vessel. The method comprises the following steps of: extracting two images of a plaque area and a plaque radial area as the classification feature with respect to the characteristics of plaque ultrasonic image in the artery blood vessel; extracting the image classification information via K-L conversion, mapping a plurality of features into a few comprehensive features, and reducing the space dimension of the features; and constructing a classifier suitable for the plaque image by using a support vector machine as the classification model, wherein the support vector machine classification method comprises a training stage and an identifying stage. The method improves the precision rate for identifying the plaque and provides an objectivity reference basis for clinically diagnosing the degree of blood vessels of coronary arteries.