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Erschienen in:
2016 | OriginalPaper | Buchkapitel
12. Digital Camera-Based Appearance Meter (AppMeter)
verfasst von : Muhammad Safdar, Ming Ronnier Luo, Yuteng Zhu, Xiaoyu Liu
Erschienen in: Advanced Graphic Communications, Packaging Technology and Materials
Verlag: Springer Singapore
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Abstract
Currently, people use luminance or illuminance meters to measure illumination at different spots in a room to know the appearance. A more robust method is needed to measure the spatial distribution of light as the spot measurement-based methods do not correspond to visual perception. The current study was conducted to propose an instrumental method to measure the appearance. The CIE color appearance model CIECAM02 was modified and proposed as an imaging method to predict the appearance attributes from an RGB image. As brightness is a function of CCT and Duv according to the previous studies, CIECAM02 brightness formula was extended in the current study. Raw data and images from three different experiments were collected to test the model. The correlation between predictions of modified CIECAM02 and visual data was found statistically significant for three different experiments.