Author(s): Ye Mao

Linked Author(s):

Keywords: Water landscape color; Copper ions; Reflectivity; Evaluation method;

Abstract: Landscape color is an important characteristic of natural water body, which represents the water quality from a different view. In the past, there was a lack of landscape colorimetric research, and some researchers have established quantitative evaluation method for landscape color of water with suspended sediment. The quantitative evaluation method for sediment water is not applicable to the solutions. To explore the landscape color evaluation method for the copper ion solutions, hyperspectral experiments were conducted. Copper ion solutions was scanned by using a hyperspectral camera and an unique spectral curve was obtained. We used the Commission Internationale de L’Eclairage spectrum three stimulus system (CIE-XYZ) calculation method to investigate the water reflectance relationship with water depth and copper ion concentration. A spectral calculation model of water landscape color was established based on the reflectivity of copper ion solution, which is related with water depth and copper ion concentration. It shows that the main spectral bands of copper ion water are different significantly with that of the water with suspended sediment. For the spectral band of the sediment suspension, the red band have the greatest influence on the color, while it is the blue band for the copper ion solution. Finally, we verified the reliability of the water landscape spectral model based on copper ion concentration obtained in the experiments. It was found that the color indicators calculated by the landscape color spectrum model of copper ions are basically consistent with the actual visual color.

DOI: https://doi.org/10.3850/38WC092019-0745

Year: 2019