This paper presents a homotopy-based algorithm for simultaneous recovery of defocus blur and the affine transformation between two images of the same scene. One of the images (and its partial derivatives) is expressed as a function of the second image, partial derivatives of the two images, blur difference, affine parameters and a continuous parameter derived from homotopy methods. All of these unknowns can thus be directly computed by resolving a system of equations. The proposed algorithm is tested using synthetic and real images. The results confirm that dense and accurate estimation can be obtained.


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    Title :

    Homotopy-based computation of defocus blur and affine transform


    Contributors:
    Deschenes, F. (author) / Ziou, D. (author)


    Publication date :

    2003-01-01


    Size :

    1557700 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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