B-mode ultrasound image fetus head circumference detection method based on closed-loop shortest path
A technology of the shortest path and detection method, applied in the field of image processing, can solve the problems of low diagnostic efficiency and time-consuming, and achieve the effect of reducing the workload of doctors, ensuring continuity, and avoiding edge faults and deletions.
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[0050] Such as Figure 1 to Figure 11 As shown in one of them, the present invention discloses a B-ultrasonic image fetal head circumference detection method based on the shortest closed-loop path. First, considering the efficiency of pixel-level search in the B-ultrasonic image, the B-ultrasonic image is reduced; secondly, Considering that the fetal head circumference is a closed elliptical shape, the thumbnail image is converted from the Cartesian coordinate system to the polar coordinate system; then, the converted B-ultrasound image of the head circumference is processed by grayscale inversion, and the image is established. On the model, use the Dijkstra algorithm and the three-point search algorithm to find the shortest path that is approximately optimal; finally, restore the pixel coordinates on the shortest path to the Cartesian coordinate system, and then scale it up to the size of the original image. Mark the head circumference and calculate the length of HC. The spec...
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