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SCIA
2007
Springer

Shadow Resistant Direct Image Registration

14 years 5 months ago
Shadow Resistant Direct Image Registration
Direct image registration methods usually treat shadows as outliers. We propose a method which registers images in a 1D shadow invariant space. Shadow invariant image formation is possible by projecting color images, expressed in a log-chromaticity space, onto an ‘intrinsic line’. The slope of the line is a camera dependent parameter, usually obtained in a prior calibration step. In this paper, calibration is avoided by jointly determining the ‘invariant slope’ with the registration parameters. The method deals with images taken by different cameras by using a different slope for each image and compensating for photometric variations. Prior information about the camera is, thus, not required. The method is assessed on synthetic and real data. Key words: Direct Registration, Shadow Invariant, Photometric Camera Calibration
Daniel Pizarro, Adrien Bartoli
Added 09 Jun 2010
Updated 09 Jun 2010
Type Conference
Year 2007
Where SCIA
Authors Daniel Pizarro, Adrien Bartoli
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