Automatic recognition method and system of standard section of fetus face of ultrasound image

The invention relates to an automatic recognition method of the standard section of the fetus face of an ultrasound image. The method includes the following steps that the original ultrasound image is preprocessed; features of the preprocessed ultrasound image are extracted through RootSIFI; the extracted features are transformed through a Gaussian mixture model, Fisher vector encoding is performed on the transformed Gaussian mixture model, and values of a vector encoding histogram are obtained; normalization is performed on the histogram to obtain feature vectors; the standard sector is learned and recognized according to the feature vectors through an SVM classifier based on a random dual coordination mechanism. The invention further relates to an automatic recognition system of the standard section of the fetus face of the ultrasound image. Through the method and system, the accuracy of the diagnosis result obtained by a doctor can be improved, workloads can be reduced, and diagnosis time can be shortened.