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Efficient Motion Deblurring with Feature Transformation and Spatial Attention

Convolutional Neural Networks (CNN) have recently advanced the state-of-the-art in generalized motion deblurring. Literature suggests that restoration of high-resolution blurred images requires a design with a large receptive field, which existing networks achieve by increasing the number of generic convolution layers, kernel-size, or the scales at which the image is processed. However, increasing the network capacity in this form comes with the burden of increased model size and lower speed. To resolve this, we propose a novel architecture composed of dynamic convolutional modules, namely feature transformation (FT) and spatial attention (SA). An FT module addresses the camera shifts responsible for the global blur in the input image, while a SA module addresses spatially varying blur due to dynamic objects and depth changes. Qualitative and quantitative comparisons on deblurring benchmarks demonstrate that our network outperforms prior art across factors of accuracy, compactness, and speed, enabling real-time deblurring.