On edge focusing

摘要

An algorithm is described that can track edges determined by the Laplacian of Gaussian operator from low to high resolution. The algorithm does not require a precomputed scale step size, but rather determines the step size adaptively by using the image content. A binary search is carried out to find the topology of the scale-space image, which is then used to track the edges. The proposed algorithm guarantees correct edge tracking with step sizes considerably larger than has been previously used.