Computer Vision

From Patches to Pictures (PaQ-2-PiQ): Mapping the Perceptual Space of Picture Quality

June 16, 2020

Abstract

Blind or no-reference (NR) perceptual picture quality prediction is a difficult, unsolved problem of great consequence to the social and streaming media industries that impacts billions of viewers daily. Unfortunately, popular NR prediction models perform poorly on real-world distorted pictures. To advance progress on this problem, we introduce the largest (by far) subjective picture quality database, containing about 40, 000 real-world distorted pictures and 120,000 patches, on which we collected about 4M human judgments of picture quality. Using these picture and patch quality labels, we built deep region-based architectures that learn to produce state-of-the-art global picture quality predictions as well as useful local picture quality maps. Our innovations include picture quality prediction architectures that produce global-to-local inferences as well as local-to-global inferences (via feedback). The dataset and source code are available at https://live.ece.utexas.edu/research.php.

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AUTHORS

Written by

Zhenqiang Ying

Haoran Niu

Praful Gupta

Dhruv Mahajan

Deepti Ghadiyaram

Alan Bovik

Publisher

Conference on Computer Vision and Pattern Recognition (CVPR)

Research Topics

Computer Vision

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