Method and device for tracking contour of motion object and method and device for analyzing myocardial motion

Abstract

The invention discloses a method and device for tracking the contour of a motion object and a method and device for analyzing myocardial motion. The device for tracking the contour of the motion object is used for tracking the contour of the motion object doing periodic deformation movement in an image slice time sequence and comprises a contour tracking part, a contour comparing part and a contour correcting part, wherein the contour tracking part is used for tracking the contour in the first time direction with the initial contour of the motion object in preset image slice as a starting contour so as to obtain a first contour of the motion object in each image slice as well as tracking the contour in the second time direction so as to obtain a second contour of the motion object in each image slice; the contour comparing part is used for calculating the similarity of the first contour and the initial contour and the similarity of the second contour and the initial contour; and the contour correcting part is used for taking the contour in each image slice, which is obtained in the tracking direction of the contour corresponding to the greater similarity of two similarities as the contour of the motion object in the corresponding image slice.

Description

technical field [0001] The present invention relates to the field of computer vision, and more specifically, to a method and device for contour tracking of a moving object, and a method and device for analyzing myocardial motion. Background technique [0002] The contour extraction of moving objects, especially the moving objects with deformation motion, is a challenging task in the field of computer vision. In practical applications, for example, in the medical field, three-dimensional images obtained from medical equipment such as computer tomography (Computed Tomography, CT) equipment, magnetic resonance imaging (Magnetic Resonance Imaging, MRI) equipment, ultrasonic (Ultrasound, UL) diagnostic equipment, etc. The outline of a biological organ or a part of a biological organ is extracted from the image time series, which is beneficial to the subsequent measurement of various parameters of the biological organ. [0003] Some traditional contour extraction methods of movin...

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Problems solved by technology

In such a method, there is a possibility of error accumulation resulting in a large difference in the obtained profile between the first phase and the last phase

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