The application of visual reflectance, colour tone, saturation degree and colorimetric coordinates of colour index are all useful for qualitativeobservation.
本文阐述了颜色指数的视觉反射率、色调、饱和度、色度坐标在定性观察方面的应用。
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This paper mainly used the data collection, literature, observation, case study method, qualitative analysis and other methods of analysis of Hunan for further exploration.
文章主要运用了资料收集法，文献法，观察法，案例研究法，定性分析法等方法对湘菜进行进一步的探索分析。
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Methods Qualitative methods of in-depth interview, focus group discussion, field observation and disguised patients were used.