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Constructing a computer model of the human eye based on tissue slice images.

Dai P, Wang B, Bao C, Ju Y - Int J Biomed Imaging (2010)

Bottom Line: The two-dimensional contour was rotated around the central axis to obtain a three-dimensional model of the human eye.Refined geometric models of the cornea, sclera, iris, lens, vitreous, and other eye tissues were then constructed with their position and ratio relationships kept intact.A preliminary study of eye tissue deformation in eye virtual surgery was simulated by a mass-spring model based on the computer models developed.

View Article: PubMed Central - PubMed

Affiliation: Institute of Biomedical Engineering, School of Info-Physics & Geomatics Engineering, Central South University, Changsha 410083, China.

ABSTRACT
Computer simulation of the biomechanical and biological heat transfer in ophthalmology greatly relies on having a reliable computer model of the human eye. This paper proposes a novel method on the construction of a geometric model of the human eye based on tissue slice images. Slice images were obtained from an in vitro Chinese human eye through an embryo specimen processing methods. A level set algorithm was used to extract contour points of eye tissues while a principle component analysis was used to detect the central axis of the image. The two-dimensional contour was rotated around the central axis to obtain a three-dimensional model of the human eye. Refined geometric models of the cornea, sclera, iris, lens, vitreous, and other eye tissues were then constructed with their position and ratio relationships kept intact. A preliminary study of eye tissue deformation in eye virtual surgery was simulated by a mass-spring model based on the computer models developed.

No MeSH data available.


Related in: MedlinePlus

Reconstructed 3D model of the human eye by slice images using resampling.
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Related In: Results  -  Collection


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fig10: Reconstructed 3D model of the human eye by slice images using resampling.

Mentions: The original purpose of our project was to reconstruct human eye models through in vitro eye slice images in order to obtain 3D reconstructions of the CT or MIR images using resampling and triangulation algorithms. However, when we obtained the eye slice images, we recognized that it was impossible to reconstruct eye models using these methods. Some slices were seriously distorted during the process of making the vitro eye slices because the volume of the eye is very small. Moreover, the registration of the slice images also presented much difficulty. Figure 10 shows the reconstructed 3D model of the human eye after image registration and volume rendering based on the obtained parts of the sliced images. Accordingly, we realized from the results that the usual 3D reconstruction algorithms may not work for the human eye slice images.


Constructing a computer model of the human eye based on tissue slice images.

Dai P, Wang B, Bao C, Ju Y - Int J Biomed Imaging (2010)

Reconstructed 3D model of the human eye by slice images using resampling.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC2874943&req=5

fig10: Reconstructed 3D model of the human eye by slice images using resampling.
Mentions: The original purpose of our project was to reconstruct human eye models through in vitro eye slice images in order to obtain 3D reconstructions of the CT or MIR images using resampling and triangulation algorithms. However, when we obtained the eye slice images, we recognized that it was impossible to reconstruct eye models using these methods. Some slices were seriously distorted during the process of making the vitro eye slices because the volume of the eye is very small. Moreover, the registration of the slice images also presented much difficulty. Figure 10 shows the reconstructed 3D model of the human eye after image registration and volume rendering based on the obtained parts of the sliced images. Accordingly, we realized from the results that the usual 3D reconstruction algorithms may not work for the human eye slice images.

Bottom Line: The two-dimensional contour was rotated around the central axis to obtain a three-dimensional model of the human eye.Refined geometric models of the cornea, sclera, iris, lens, vitreous, and other eye tissues were then constructed with their position and ratio relationships kept intact.A preliminary study of eye tissue deformation in eye virtual surgery was simulated by a mass-spring model based on the computer models developed.

View Article: PubMed Central - PubMed

Affiliation: Institute of Biomedical Engineering, School of Info-Physics & Geomatics Engineering, Central South University, Changsha 410083, China.

ABSTRACT
Computer simulation of the biomechanical and biological heat transfer in ophthalmology greatly relies on having a reliable computer model of the human eye. This paper proposes a novel method on the construction of a geometric model of the human eye based on tissue slice images. Slice images were obtained from an in vitro Chinese human eye through an embryo specimen processing methods. A level set algorithm was used to extract contour points of eye tissues while a principle component analysis was used to detect the central axis of the image. The two-dimensional contour was rotated around the central axis to obtain a three-dimensional model of the human eye. Refined geometric models of the cornea, sclera, iris, lens, vitreous, and other eye tissues were then constructed with their position and ratio relationships kept intact. A preliminary study of eye tissue deformation in eye virtual surgery was simulated by a mass-spring model based on the computer models developed.

No MeSH data available.


Related in: MedlinePlus