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'''Gradient ___domain image processing''' is a relatively new type of [[digital image processing]] that operates on the differences between neighboring pixels, rather than on the pixel values directly. An [[image gradient]] represents the derivative of an image, so the goal of gradient ___domain processing is to obtain an image by integrating the gradient, which requires solving [[Poisson's equation]].<ref name="Bhat2010">Bhat, Pravin, et al. "Gradientshop: A gradient-___domain optimization framework for image and video filtering." ACM Transactions on Graphics (TOG) 29.2 (2010): 10.</ref>
== Basics ==
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