INDWELLING NEEDLE IMAGE SEGMENTATION MODEL CONSTRUCTION METHOD, APPARATUS AND SYSTEM, AND NEEDLE TIP POSITIONING METHOD, APPARATUS AND SYSTEM

摘要

An indwelling needle image segmentation model construction method, apparatus and system, and a needle tip positioning method, apparatus and system. Firstly, an image segmentation model which is specifically used for an indwelling needle image including a light reflection layer (2-1) region can be trained, so that different types of indwelling needles produced by various manufacturers can be identified; and a target contour identification task is used, thereby improving the identification precision for a contour, such that a network extracts contour information of a target, thereby improving the accuracy of an indwelling needle image segmentation result and thus improving the accuracy of subsequent needle tip positioning for an indwelling needle. Secondly, a matching method is used to obtain a sample image; by means of a ratio parameter of the sample image, the position of a needle tip of the indwelling needle in the image can be easily and quickly determined according to the position of the light reflection layer (2-1) region, thereby improving the real-time performance of needle tip positioning; and a coordinate transformation parameter of the sample image is also used to calculate the needle tip depth of an indwelling needle to be positioned, so that the time of operation of a program can be effectively reduced, thereby improving the real-time performance of needle tip depth positioning.