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Segmentation and 3D Visualization of Spine MRI Images

Author: ZhangSuPing
Tutor: SunDongMei
School: Beijing Jiaotong University
Course: Signal and Information Processing
Keywords: NMR Spine Segmentation Level set 3D visualization Ray Casting VTK
CLC: TP391.41
Type: Master's thesis
Year: 2010
Downloads: 135
Quote: 1
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Abstract


Medical image segmentation and 3D visualization is a hot research field of medical image processing is an important application of computer graphics and image processing in biomedical engineering , has a special value in the field of medical diagnosis and treatment . Therefore , has important implications for medical image segmentation and 3D visualization . This paper studies the spine MRI (Magnetic Resonance Imaging) image segmentation and 3D visualization algorithms . The main contents are as follows : first , in order to image segmentation and 3D visualization Firstly spine MRI image preprocessing , including image enhancement and tomographic image interpolation . Enhancement algorithm based on morphological opening and closing operation , top hat operation , enhanced spinal MRI images of the target area ; through a comparative analysis of several commonly used interpolation algorithm , using the linear interpolation method based on gray tomographic image interpolation effectively improve the quality of the three-dimensional reconstruction . Second, the level set segmentation method applicable to spinal MRI images . First intervertebral disc detection algorithm based on a priori knowledge , positioning and segmentation of intervertebral disc , intervertebral disc segmentation results for coarse segmentation of the vertebrae , this coarse segmentation as initialization contour level set segmentation ; then based RSF (Region Scalable Fitting ) energy model to guide the level set curve to vertebral boundary evolution , the final segmented vertebrae. Constructed for three-dimensional visualization of volume data , respectively, according to the disc test results and level set segmentation results to build the spinal window and vertebrae template , and use of the vertebrae the template and spinal vertebrae and spinal area windows extracted from the original image sequence . Third, we use Ray Casting algorithm for three-dimensional reconstruction of segmented spine and vertebrae . Spine MRI image provided by the University of Cincinnati School of Medicine database experiments , the reconstructed image is clear , true reproduction of a three-dimensional look of the spine and vertebrae . In the last article , Visual C 6.0 platform to achieve visualization based on VTK (Visualization Toolkit) spine and vertebrae 3D rotation, translation and other operations , you can interact with the reconstruction of the three-dimensional model , with a strong practical sex .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device
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