The invention discloses a
thyroid ultrasound image nodule segmentation method based on spatio-temporal characteristics and frequency enhancement, and relates to the technical field of medical
image processing, and the method comprises the following specific steps: multi-scale characteristic extraction: carrying out the gray normalization and median filtering preprocessing of a
thyroid ultrasound image, and carrying out the segmentation of the
thyroid ultrasound image nodule; extracting multi-scale features under different resolutions by using a pre-trained
backbone network, obtaining the multi-scale features under different resolutions by the
backbone network through multilayer
convolution and
pooling operation, and generating basic and advanced features through
convolution operation; by designing an intra-frame
feature extraction architecture based on frequency
feature fusion and an efficient spatial-temporal
feature aggregation mechanism, intra-frame and inter-frame collaborative optimization is realized, intra-frame and inter-frame high and
low frequency features are solved by means of
octave convolution, the perceptual ability of a model to ultrasonic image details and
semantic information is improved, inter-frame and inter-frame
feature fusion is realized, and the perceptual ability of the model to ultrasonic image details and
semantic information is improved. A local circulation neighborhood propagation mechanism is adopted, and interference of thyroid movement on
time sequence feature extraction is effectively restrained.