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		<citationkey>ForsterTozz:2000:To3DRe</citationkey>
		<author>Forster, Carlos Henrique Quatucci,</author>
		<author>Tozzi, Clésio L.,</author>
		<title>Towards 3D reconstruction of endoscope images using shape from shading</title>
		<conferencename>Brazilian Symposium on Computer Graphics and Image Processing, 13 (SIBGRAPI)</conferencename>
		<year>2000</year>
		<editor>Carvalho, Paulo Cezar Pinto,</editor>
		<editor>Walter, Marcelo,</editor>
		<date>October</date>
		<publisheraddress>Los Alamitos</publisheraddress>
		<publisher>IEEE Computer Society</publisher>
		<conferencelocation>Gramado, RS, Brazil</conferencelocation>
		<keywords>image reconstruction, 3D endoscope image reconstruction, shape from shading, smooth object, single light source, camera projection center, curve expansion, spherical projection model, dichromatic model, surface reflectance, image distortion, image specular reflection, medical image processing.</keywords>
		<abstract>The 3D reconstruction problem from a single endoscope image of a smooth object is studied in the context of the shape from shading methods and considering a single light source at the camera projection center. Based on a curve expansion shape from shading algorithm, a spherical projection model for the endoscope camera and a dichromatic model for the surface reflectance, an approach to solve practical problems, namely the endoscope image distortion and the removal of the image specular reflection component, is presented. Results obtained from application of this approach to synthetic and real images are presented.</abstract>
		<pages>90-96</pages>
		<notes>The conference was held in Gramado, RS, Brazil, from October 17 to 20.</notes>
		<organization>SBC - Brazilian Computer Society</organization>
		<tertiarytype>Full Paper</tertiarytype>
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