Photometric stereo is a fundamental approach in computer vision. At its core lies a set of image irradiance equations each taken with a different illumination. The vast majority of studies in this field have assumed orthography as the projection model. This paper re-examines the basic set of equations of photometric stereo, under an assumption of perspective projection. We show that the resulting system is linear (as is the case under the orthographic model; Nevertheless, the unknowns are different in the perspective case). We then suggest a simple reconstruction algorithm based on the perspective formulae, and compare it to its orthographic counterpart on synthetic as well as real images. This algorithm obtained lower error rates than the orthographic one in all of the error measures. These findings strengthen the hypothesis that a more realistic set of assumptions, the perspective one, improves reconstruction significantly.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Photometric stereo under perspective projection


    Contributors:
    Tankus, A. (author) / Kiryati, N. (author)


    Publication date :

    2005-01-01


    Size :

    584305 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Photometric Stereo under Perspective Projection

    Tankus, A. / Kiryati, N. / IEEE | British Library Conference Proceedings | 2005


    Polarisation photometric stereo

    Atkinson, Gary A. | British Library Online Contents | 2017


    Resolution-Enhanced Photometric Stereo

    Tan, P. / Lin, S. / Quan, L. | British Library Conference Proceedings | 2006


    The 4-Source Photometric Stereo Under General Unknown Lighting

    Chen, C.-P. / Chen, C.-S. | British Library Conference Proceedings | 2006


    Passive photometric stereo from motion

    Jongwoo Lim, / Ho, J. / Ming-Hsuan Yang, et al. | IEEE | 2005