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Accession number;02A0234251
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| Title;Shape Recovery by Two-Image Photometric Stereo Using Shadows. |
| Author;
HOU Z
(Narajoidai Ri)
MORII FUJIKI
(Narajoidai Ri)
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Journal Title;Joho Shori Gakkai Kenkyu Hokoku
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Journal Code:Z0031B
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ISSN:0919-6072
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VOL.2002;NO.2(CVIM-131);PAGE.149-154(2002)
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| Figure&Table&Reference;FIG.10, REF.4 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;Shape recovery by two-image photometric stereo under a Lambertian reflection model is treated. We investigate the situation where two possibilities of a surface normal vector cannot be disambiguated by using an integrability constraint. By applying object shadows projected on a plane to this situation, it is shown that we can determine a correct normal vector. We study shape recovery for an object height profile z=c-mx2-ny2 and two illumination vectors s1=(sin.THETA.,0,cos.THETA.), s2=(-sin.THETA.,0,cos.THETA.), especially a height profile z=1-x2-y2 which shows a typical situation on the ambiguity of the normal vector is investigated in detail by using artificial shaded images. (author abst.) |
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