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Method, medium and system used for analyzing image sequences of periodic physiological activities

An image sequence and physiological activity technology, which is applied to radiological diagnostic instruments, computer-aided medical procedures, calculations, etc., can solve the problems of increasing the complexity of the system, such as the workload of clinicians, and is not easily affected by physiological activities and noise. , the effect of convenient operation

Active Publication Date: 2020-01-07
SHENZHEN KEYA MEDICAL TECH CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The inventors found that the existing periodic phase analysis method has the following problems: it needs to rely on additional periodic monitoring devices or manually selected reference images, which increases the complexity of the system and the workload of clinicians

Method used

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  • Method, medium and system used for analyzing image sequences of periodic physiological activities
  • Method, medium and system used for analyzing image sequences of periodic physiological activities
  • Method, medium and system used for analyzing image sequences of periodic physiological activities

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Embodiment Construction

[0035] Such as figure 1 As shown, based on the image sequence of periodic physiological activities, the method of the present invention includes the following steps: by performing motion analysis on adjacent frames, calculating the local motion vector of each pixel in each frame image (step 101, also referred to as adjacent frame motion analysis step); then the local motion vectors of the pixels in the frame images of the image sequence are subjected to principal component analysis to estimate the principal motion vectors of each pixel (step 102, also referred to as the principal component analysis step); by combining each The local motion vector of each pixel in the frame image is projected on its corresponding main motion vector to reconstruct the global motion metric of each frame (step 103, also called the global motion metric reconstruction step), that is, to reconstruct the periodic physiological The motion cycle of the activity; based on the global motion measure of eac...

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Abstract

The invention discloses a method, medium and system used for analyzing image sequences of periodic physiological activities. The method comprises the following steps: calculating a local motion vectorof each pixel in each frame of image by analyzing motion of adjacent frames in an image sequence; analyzing main components of local motion vectors of all pixels in all frames of images in the imagesequence in order to estimate main motion vectors of all pixels; projecting local motion vectors of all pixels in all frames of images on corresponding main motion vectors in order to rebuild global motion measures of all frames; and calculating phase positions where all the frame are in the periodic physiological activities according to global motion measures of all frames. The method, medium andsystem can rapidly and effectively estimate phase positions of image frames according to self dynamic changes of the image sequence of the periodic physiological activities. There is no need to depend on an auxiliary monitoring device or other reference images.

Description

[0001] This application is a divisional application of a Chinese invention patent application with an application date of March 9, 2018, an application number of 201810195622.2, and an invention title of "Method, medium and system for analyzing image sequences of periodic physiological activities". technical field [0002] The present invention relates to a method, a system and a computer storage medium for analyzing an image sequence, in particular, to a method, a system and a computer storage medium for analyzing an image sequence of periodic physiological activities, and more particularly, to the analysis of periodic physiological activities A method, system and computer storage medium for analyzing an image sequence to obtain a phase. Background technique [0003] The cycle of a physiological activity, such as the respiratory and cardiac cycles, plays an important role in synchronizing the image frames in an image sequence of the physiological activity. The phase of each...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T7/269G06T7/277G06F16/535A61B6/00
CPCG06T7/0012G06T2207/30048G06T2207/10081G06T7/0016G06T7/269G06T7/277G06F16/535A61B6/5217A61B6/504A61B6/5264G06T2207/30101G16H50/30G06T2207/30004G06T7/20G06F16/50
Inventor 刘潇潇刘树宝马斌曹坤琳尹游兵李育威赵倩宋麒
Owner SHENZHEN KEYA MEDICAL TECH CORP
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