Illumination correction for image stitching

Sascha Klement, Fabian Timm, Erhardt Barth


Inhomogeneous illumination occurs in nearly every image acquisition system and can hardly be avoided simply by improving the quality of the hardware and the optics. Therefore, software solutions are needed to correct for inhomogeneities, which are particularly visible when combining single images to larger mosaics, e.g. when wrapping textures onto surfaces. Various methods to remove smoothly varying image gradients are available, but often produce artifacts at the image boundary. We present a novel correction method for compensating these artifacts based on the Gaussian pyramid and an appropriate extrapolation of the image boundary. Our framework provides various extrapolation methods and reduces the illumination correction error significantly. Moreover, the correction is done in real-time for high-resolution images and is part of an application for virtual material design.

Original languageEnglish
Title of host publicationProceedings of the Int. Conference on Imaging Theory and Applications (IMAGAPP)
EditorsGabriela Csurka, Martin Kraus, José Braz
Number of pages6
Place of PublicationAlgarve, Portugal
Publication date01.2011
ISBN (Print)978-989-8425-46-1
Publication statusPublished - 01.2011
EventProceedings of the International Conference on Imaging Theory and Applications and International Conference on Information Visualization Theory and Applications
- Vilamoura, Portugal
Duration: 05.03.201107.03.2011


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