FLIP: A Difference Evaluator for Alternating Images
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Date
2020
Journal Title
Journal ISSN
Volume Title
Publisher
ACM
Abstract
Image quality measures are becoming increasingly important in the field of computer graphics. For example, there is currently a major focus on generating photorealistic images in real time by combining path tracing with denoising, for which such quality assessment is integral. We present FLIP, which is a difference evaluator with a particular focus on the differences between rendered images and corresponding ground truths. Our algorithm produces a map that approximates the difference perceived by humans when alternating between two images. FLIP is a combination of modified existing building blocks, and the net result is surprisingly powerful. We have compared our work against a wide range of existing image difference algorithms and we have visually inspected over a thousand image pairs that were either retrieved from image databases or generated in-house. We also present results of a user study which indicate that our method performs substantially better, on average, than the other algorithms. To facilitate the use of FLIP, we provide source code in C++, MATLAB, NumPy/SciPy, and PyTorch.
Description
@inproceedings{10.1145:3406183,
booktitle = {Proceedings of the ACM on Computer Graphics and Interactive Techniques},
editor = {Yuksel, Cem and Membarth, Richard and Zordan, Victor},
title = {{FLIP: A Difference Evaluator for Alternating Images}},
author = {Andersson, Pontus and Nilsson, Jim and Akenine-Möller, Tomas and Oskarsson, Magnus and Åström, Kalle and Fairchild, Mark D.},
year = {2020},
publisher = {ACM},
ISSN = {2577-6193},
ISBN = {},
DOI = {10.1145/3406183}
}