Abstract: Combined with many years working experience, this article has developed a more rational method for evaluation of the colour difference of automotive effective coatings.The colour difference evaluation of auto effect coating should combine visual evaluation and instrument testing evaluation. Only using correct colour difference calculation mathematic method, the visually evaluation and instrument testing evaluation can be correlated.

Key words: vehicle effect coating, colour difference evaluation method, colour diffeerence testing and control, the mathematics mode of colour difference calculation

摘要： 结合多年实际工作经验，探讨了评价汽车效果涂料色差更合理的方法。汽车效果涂料色差评估需将视觉评估和仪器测试评估相结合，仪器测量的数据结果需选用合适的色差计算数学模型才能将仪器评价的结果与人眼视觉感知效果涂料色差结果保持一致。

关键词: 汽车效果涂料, 色差评估方法, 色差检测与控制, 色差计算数学模型