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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.

Pending Publication Date: 2020-03-27
福州数据技术研究院有限公司
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Problems solved by technology

However, these factors are human-operated and involve multiple keystrokes and probing actions, which is time-consuming and inefficient for diagnosis

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  • B-mode ultrasound image fetus head circumference detection method based on closed-loop shortest path
  • B-mode ultrasound image fetus head circumference detection method based on closed-loop shortest path
  • B-mode ultrasound image fetus head circumference detection method based on closed-loop shortest path

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Embodiment Construction

[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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Abstract

The invention discloses a B-mode ultrasound image fetus head circumference detection method based on the closed-loop shortest path. A B-mode ultrasound image is obtained, and is reduced according to aset scale to obtain a thumbnail, coordinates of the thumbnail are transformed from Cartesian coordinates into polar coordinates, and transformation into the polar coordinates has the advantage that apath obtained through calculation can be restored to a closed path in a subsequent step, so that the basic requirement of the detected head circumference as a closed ellipse is met. According to theB-mode ultrasound image fetus head circumference detection method based on the closed-loop shortest path, due to the fact that in actual fetus head circumference B-mode ultrasound images, the situation that images of the forehead portion and the head back portion of a skull are not sharp or even blurred happens generally, a shortest path algorithm is used for searching for an optimal path, so thatin the process of searching for the optimal path, the continuity of the path and accurate recognition of lost parts are guaranteed, the B-mode ultrasound image fetus head circumference detection method based on the closed-loop shortest path has a high recognition rate, and the situations, which easily happen in the case, of edge faults and loss during edge detection are effectively avoided.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method for detecting the fetal head circumference of a B-ultrasound image based on the closed-loop shortest path. Background technique [0002] With the popularization of prenatal examination and the advancement of technology, most of the fetal birth defects have been found before birth, so that appropriate intervention can be carried out. Obstetric ultrasound, as a non-invasive prenatal diagnosis method, is crucial to the diagnosis of birth defects. B-ultrasound is also called two-dimensional ultrasound. The principle is to emit ultrasonic waves into the body, which has penetrating ability. When encountering barriers, echoes will be generated. Different barriers echo in different ways. Computers are used to collect these echoes and convert them into corresponding images on the screen. displayed above. [0003] Currently, fetal biometric measurements using B-ultrasou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B8/08
CPCA61B8/0866A61B8/5215
Inventor 陈福沨王钰鹏
Owner 福州数据技术研究院有限公司
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