Optical tomography of refracting objects with opaque regions

Article Name:		OPTICAL TOMOGRAPHY OF REFRACTING OBJECTS WITH OPAQUE REGIONS
Authors:		V.V. Afanasyev (Russian Federation), A.V. Ignatenko (Russian Federation), A.G. Voloboy (Russian Federation)
Address:		V.V. Afanasyev vafanasjev@graphics.cs.msu.ru Keldysh Institute of Applied Math RAS Graphics and Media Lab CMC MSU A.V. Ignatenko ignatenko@graphics.cs.msu.ru Keldysh Institute of Applied Math RAS Graphics and Media Lab CMC MSU A.G. Voloboy voloboy@gin.keldysh.ru Keldysh Institute of Applied Math RAS Graphics and Media Lab CMC MSU
Abstract:		Classic computed tomography techniques like ART are widely used for reconstruction of objects scanned in X-ray devices, where almost every object can be made transparent by increasing radiation power and its absorption can be measured with some accuracy. But the classic model cannot be applied to reconstruction of objects which absorption is so high that it does not transmit any radiation: such cases are possible in X-ray tomography with a low-power radiation source and also are frequent in optical tomography. The article explains difficulties faced by classic ART algorithms in optical tomography in case of opaque regions presence in the scanned object. The ART method modification is proposed for this case.
Language:		English

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