Method and system for automatically extracting tongue contour in NMR image sequence

A nuclear magnetic image, automatic extraction technology, applied in the field of image processing in the information technology industry, can solve problems such as automatic extraction

Active Publication Date: 2016-05-04
INST OF AUTOMATION CHINESE ACAD OF SCI
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Problems solved by technology

[0004] An embodiment of the present invention provides a method for automatically extracting tongue position contours in an MRI image sequence to at l

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  • Method and system for automatically extracting tongue contour in NMR image sequence
  • Method and system for automatically extracting tongue contour in NMR image sequence
  • Method and system for automatically extracting tongue contour in NMR image sequence

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[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0032] It should be noted that, in the drawings or descriptions of the specification, similar or identical parts all use the same figure numbers. And in the accompanying drawings, it is marked for simplicity or convenience. Furthermore, implementations not shown or described in the accompanying drawings are forms known to those of ordinary skill in the art. Additionally, while illustrations of parameters containing particular values ​​may be provided herein, it should be understood that parameters need not be exactly equal to the corresponding values, but rather approximate the corresponding values ​​within acceptable error margins or design constraints.

[0033] The embodiment of the present invention combines the tradi...

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Abstract

The present invention provides a method and system for automatically extracting a tongue contour in an NMR image sequence. The method comprises a step of obtaining a tongue contour initial edge point by using a multi-directional Sobel operator in a tongue movement area for an NMR image sequence, a step of establishing a tongue edge point mapping matrix, combining with a former frame of tongue contour position, and adjusting the mapping matrix, a step of searching an optimal edge point sequence in the adjusted mapping matrix, and obtaining the tongue contour with the aid of the quadratic spline curve fitting technology of the control point. According to the method and the system, the tongue contour can be automatically and accurately extracted from the NMR image sequence, the method and the system have the advantages that when a tongue and other organs are in contact, the method has good robustness, and the whole process is automatically completed without human interaction.

Description

technical field [0001] The invention relates to the technical field of image processing in the information technology industry, in particular to a method and system for automatically extracting tongue position contours in nuclear magnetic image sequences. Background technique [0002] As an advanced and safe medical observation method, nuclear magnetic resonance imaging technology has been widely used in medical treatment, scientific research, criminal investigation and other fields in recent years. Because the midsagittal plane of MRI images can provide a relatively complete shape of the speaker's vocal tract, and the imaging effect of the interior of the oral cavity is clearer than that of X-ray images, so this technology is often used for vocal tract shape segmentation, vowel pronunciation vocal tract contour research and Tongue movement analysis during pronunciation, etc. In previous research work, researchers usually need to use a large number of manual annotations to ...

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Application Information

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IPC IPC(8): G06T7/00G06K9/46
CPCG06T7/0012G06T2207/10088G06T2207/30004G06V10/44
Inventor 陶建华张大伟杨明浩
Owner INST OF AUTOMATION CHINESE ACAD OF SCI
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