29 July 2002 Measuring geometric parameters using image processing and diffractive optics methods
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Proceedings Volume 4900, Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life; (2002) https://doi.org/10.1117/12.484493
Event: Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life, 2002, Novosibirsk, Russian Federation
Abstract
In this paper, we'll discuss the development of an approach to measuring the object parameters on the basis of image processing and diffractive optics methods. The paper is composed oftwo parts. In Part I we'll examine a number of problems related to measuring the geometric parameters of diagnostic medical images derived via optical and X-ray techniques. These problems are concerned with measuring the geometric parameters of heart and retina blood vessels. Here, the original techniques and algorithms for tracing the blood vessels' tree, detecting vessel branches and measuring the vessel thickness are used. We shall also discuss methods for 3D tracing, that allow the 3D structural images ofthe vessel tree to be derived from X-ray angiographic images of projections. Part II is devoted to the synthesis of multi-order diffractive optical elements (DOEs) matched to different orthogonal bases. These elements may be applied to spectral analysis by using the Bessel, Gauss-Laguene and Gauss-Hermite modes; checking the aspherical surfaces by using the Zernike basis; the rotation-invariant light decomposition in terms of angular harmonics and functions comprising the angular harmonics; measuring the orbital angular momentum of rotating laser light fields.
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Victor A. Soifer, Victor A. Soifer, Victor V. Kotlyar, Victor V. Kotlyar, Svetlana N. Khonina, Svetlana N. Khonina, Alexander G. Khramov, Alexander G. Khramov, N. Yu. Ilyasova, N. Yu. Ilyasova, } "Measuring geometric parameters using image processing and diffractive optics methods", Proc. SPIE 4900, Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life, (29 July 2002); doi: 10.1117/12.484493; https://doi.org/10.1117/12.484493
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