Abstract
Many image processing methods such as corner detection, optical flow and iterative enhancement make use of image tensors. Generally, these tensors are estimated using the structure tensor. In this work we show that the gradient energy tensor can be used as an alternative to the structure tensor in several cases. We apply the gradient energy tensor to common image problem applications such as corner detection, optical flow and image enhancement. Our experimental results suggest that the gradient energy tensor enables real-time tensor-based image enhancement using the graphical processing unit (GPU) and we obtain 40 % increase of frame rate without loss of image quality.
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Acknowledgement
This research has received funding from the Swedish Research Council through grants for the projects Visualization-adaptive Iterative Denoising of Images (VIDI) and Extended Target Tracking (ETT), within the Linnaeus environment CADICS and the excellence network ELLIIT.
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Åström, F., Felsberg, M. (2015). On the Choice of Tensor Estimation for Corner Detection, Optical Flow and Denoising. In: Jawahar, C., Shan, S. (eds) Computer Vision - ACCV 2014 Workshops. ACCV 2014. Lecture Notes in Computer Science(), vol 9009. Springer, Cham. https://doi.org/10.1007/978-3-319-16631-5_2
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DOI: https://doi.org/10.1007/978-3-319-16631-5_2
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