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A Flying Gray Ball Multi-illuminant Image Dataset for Color Research

机译:用于彩色研究的飞行灰球多光照明剂图像数据集

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摘要

For research in the field of illumination estimation and color constancy, there is a need for ground-truth measurement of the illumination color at many locations within multi-illuminant scenes. A practical approach to obtaining such ground-truth illumination data is presented here. The proposed method involves using a drone to carry a gray ball of known percent surface spectral reflectance throughout a scene while photographing it frequently during the flight using a calibrated camera. The captured images are then post-processed. In the post-processing step, machine vision techniques are used to detect the gray ball within each frame. The camera RGB of light reflected from the gray ball provides a measure of the illumination color at that location. In total, the dataset contains 30 scenes with 100 illumination measurements on average per scene. The dataset is available for download free of charge. (C) 2020 Society for Imaging Science and Technology.
机译:对于照明估计和颜色恒定领域的研究,需要在多发光景观场景中的许多位置处的照明颜色的地面真实测量。这里介绍了获得这种地基照明数据的实用方法。所提出的方法涉及在使用校准照相机期间拍摄经常拍摄时,使用无人机在整个场景中携带已知百分比表面光谱反射率的灰色球。然后将捕获的图像进行后处理。在后处理步骤中,机器视觉技术用于检测每个框架内的灰色球。从灰色球反射的光的相机RGB提供了该位置的照明颜色的量度。总共,数据集包含30个场景,平均每场平均水平为100个照明测量值。数据集可免费下载。 (c)2020年影像科技协会。

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