NDLI: TDCC: top-down semantic aggregation for colour constancy

Content Provider	IET Digital Library
Author	Li, Xiaoqiang Zhu, Yaqin Han, Jiayue Li, Jide Lian, Huicheng Tong, Weiqin
Abstract	Images obtained from an illuminated scene often have their original colour contaminated. Colour constancy is a study considering how to restore them. Substantial progress on colour constancy has been made in recent years due to the development of a convolutional neural network (CNN). In a CNN structure, high-level features contain semantic information while low-level features show local details. If both are taken into account, they would help achieve a more accurate illuminant estimation. However, previous works paid little attention to the latter for lack of frameworks, which can combine those two kinds of features together. Inspired by the pyramid model, a top-down network that successively propagates high-level information to low-level layers is proposed. This network, named top-down semantic aggregation for colour constancy (TDCC), takes full advantage of the multi-scale representations with strong semantics. As a result, objects with intrinsic colours are captured and a better estimation is obtained. Experiments on three benchmark datasets demonstrate that TDCC significantly outperforms state-of-the-art colour constancy methods.
Starting Page	1944
Ending Page	1950
Page Count	7
ISSN	17519659
Volume Number	13
e-ISSN	17519667
Issue Number	Issue 11, Sep (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-ipr/13/11
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-ipr.2019.0480
Journal	IET Image Processing
Publisher Date	2019-07-10
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Aggregation CNN Structure Computer Vision And Image Processing Technique Convolutional Neural Nets Convolutional Neural Network High-level Information Propagation Image Colour Analysis Image Representation Image Restoration Neural Computing Technique Optical, Image And Video Signal Processing TDCC Method Top-down Semantic Aggregation For Colour Constancy Method
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering Computer Vision and Pattern Recognition Software

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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