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Spatial PixelCNN: Generating Images from Patches

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arxiv 1712.00714 v1 pith:T7K6PFJW submitted 2017-12-03 cs.CV cs.LG

classification cs.CVcs.LG
keywords imagespixelcnndatasetpatchesspatialgeneratingmnistresolutions
verification ladder T0 review T1 audit T2 compute T3 formal

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abstract

In this paper we propose Spatial PixelCNN, a conditional autoregressive model that generates images from small patches. By conditioning on a grid of pixel coordinates and global features extracted from a Variational Autoencoder (VAE), we are able to train on patches of images, and reproduce the full-sized image. We show that it not only allows for generating high quality samples at the same resolution as the underlying dataset, but is also capable of upscaling images to arbitrary resolutions (tested at resolutions up to $50\times$) on the MNIST dataset. Compared to a PixelCNN++ baseline, Spatial PixelCNN quantitatively and qualitatively achieves similar performance on the MNIST dataset.

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Cited by 1 Pith paper

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  1. Precise Estimation of Renal Vascular Dominant Regions Using Spatially Aware Fully Convolutional Networks, Tensor-Cut and Voronoi Diagrams

    eess.IV 2019-08 conditional novelty 4.0 of 10

    An automatic CT pipeline combining a spatially aware neural network, tensor-based graph cuts, and Voronoi diagrams estimates renal vascular dominant regions with 80% Dice on 8 cases.

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