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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

Extracting the inner surface of an eyeball through a level set algorithm.
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Related In: Results  -  Collection


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fig5: Extracting the inner surface of an eyeball through a level set algorithm.

Mentions: We extracted the contours of the different eye tissues by level set segmentation methods. Figure 5 shows the segmentation results of the inner eyeball surfaces. Figure 5(b) shows the segmentation result with the iteration step length τ = 3 and iteration times k = 40. Figure 5(c) shows the segmentation result with parameters τ = 3 and k = 200 while Figure 5(d) shows the segmentation result with parameters τ = 6 and k = 300. The segmentation result in Figure 5(d) shows the portion that is more closely attached to the inner wall of eyeball. Figures 5(b) and 5(c) show the results with insufficiently and excessively curved evolution.


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)

Extracting the inner surface of an eyeball through a level set algorithm.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

fig5: Extracting the inner surface of an eyeball through a level set algorithm.
Mentions: We extracted the contours of the different eye tissues by level set segmentation methods. Figure 5 shows the segmentation results of the inner eyeball surfaces. Figure 5(b) shows the segmentation result with the iteration step length τ = 3 and iteration times k = 40. Figure 5(c) shows the segmentation result with parameters τ = 3 and k = 200 while Figure 5(d) shows the segmentation result with parameters τ = 6 and k = 300. The segmentation result in Figure 5(d) shows the portion that is more closely attached to the inner wall of eyeball. Figures 5(b) and 5(c) show the results with insufficiently and excessively curved evolution.

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