no code implementations • ECCV 2020 • Aamir Mustafa, Rafal K. Mantiuk
Scarcity of labeled data has motivated the development of semi-supervised learning methods, which learn from large portions of unlabeled data alongside a few labeled samples.
1 code implementation • 21 Jan 2024 • Rafal K. Mantiuk, Param Hanji, Maliha Ashraf, Yuta Asano, ALEXANDRE CHAPIRO
ColorVideoVDP is a video and image quality metric that models spatial and temporal aspects of vision, for both luminance and color.
1 code implementation • CVPR 2024 • Peibei Cao, Rafal K. Mantiuk, Kede Ma
Existing quality models are mostly designed for low dynamic range (LDR) images, and do not align well with human perception of HDR image quality.
no code implementations • 26 Apr 2023 • Rafal K. Mantiuk, Dounia Hammou, Param Hanji
High-Dynamic-Range Visual-Difference-Predictor version 3, or HDR-VDP-3, is a visual metric that can fulfill several tasks, such as full-reference image/video quality assessment, prediction of visual differences between a pair of images, or prediction of contrast distortions.
1 code implementation • 30 Sep 2022 • Aamir Mustafa, Param Hanji, Rafal K. Mantiuk
Many image enhancement or editing operations, such as forward and inverse tone mapping or color grading, do not have a unique solution, but instead a range of solutions, each representing a different style.
1 code implementation • 19 Aug 2021 • Gabriel Eilertsen, Saghi Hajisharif, Param Hanji, Apostolia Tsirikoglou, Rafal K. Mantiuk, Jonas Unger
Here, we reproduce a typical evaluation using existing as well as simulated SI-HDR methods to demonstrate how different aspects of the problem affect objective quality metrics.
no code implementations • 26 Mar 2021 • Aamir Mustafa, Aliaksei Mikhailiuk, Dan Andrei Iliescu, Varun Babbar, Rafal K. Mantiuk
The choice of a loss function is an important factor when training neural networks for image restoration problems, such as single image super resolution.
no code implementations • 19 Dec 2020 • Aliaksei Mikhailiuk, Maria Perez-Ortiz, Dingcheng Yue, Wilson Suen, Rafal K. Mantiuk
As the existing HDR quality datasets are limited in size, we created a Unified Photometric Image Quality dataset (UPIQ) with over 4, 000 images by realigning and merging existing HDR and standard-dynamic-range (SDR) datasets.
1 code implementation • 16 Sep 2020 • Param Hanji, Fangcheng Zhong, Rafal K. Mantiuk
A near-optimal reconstruction of the radiance of a High Dynamic Range scene from an exposure stack can be obtained by modeling the camera noise distribution.
1 code implementation • 15 Jul 2020 • Aamir Mustafa, Rafal K. Mantiuk
Scarcity of labeled data has motivated the development of semi-supervised learning methods, which learn from large portions of unlabeled data alongside a few labeled samples.
1 code implementation • NeurIPS 2018 • Jing Li, Rafal K. Mantiuk, Junle Wang, Suiyi Ling, Patrick Le Callet
In this paper we present a hybrid active sampling strategy for pairwise preference aggregation, which aims at recovering the underlying rating of the test candidates from sparse and noisy pairwise labelling.
2 code implementations • 11 Dec 2017 • Maria Perez-Ortiz, Rafal K. Mantiuk
Most popular strategies to capture subjective judgments from humans involve the construction of a unidimensional relative measurement scale, representing order preferences or judgments about a set of objects or conditions.
no code implementations • 30 Nov 2017 • Alessandro Artusi, Thomas Richter, Touradj Ebrahimi, Rafal K. Mantiuk
In this lecture note, we describe high dynamic range (HDR) imaging systems; such systems are able to represent luminances of much larger brightness and, typically, also a larger range of colors than conventional standard dynamic range (SDR) imaging systems.
no code implementations • NeurIPS 2017 • Nanyang Ye, Zhanxing Zhu, Rafal K. Mantiuk
Minimizing non-convex and high-dimensional objective functions is challenging, especially when training modern deep neural networks.