拜尔滤色阵列航摄数字相机色彩插值算法研究

Research on Color Interpolation Algorithm of Bayer Filter Array for Aerial Camera

在航空摄影测量对数字相机的旺盛需求下,越来越多的面阵传感器采用成本较低的拜尔彩色滤光阵列模式进行色彩感知,对此提出一种基于可变边缘梯度阈值的去马赛克色彩插值算法与色彩性能量化评估方法,以适用于航摄影像色彩还原。试验分析与量化评价中所引入的色彩误差度量指标同时兼顾了影像的几何量测性能,这为用于航空摄影测量的遥感影像彩色信息还原及质量评估提供了技术借鉴。

By the strong demand in the aerial or unmanned aerial survey and from the hardware cost considerations,the lower cost Bayer color filter array mode is used commonly in color perception of area-based array aerial camera.So an algorithm of color interpolation based on the edge gradient variable threshold and a quantifiable color performance evaluating method are introduced.A new error measure is proposed,which combines the color and metric performance for the colorful remote sensing image.The experimental analysis and quantitative evaluation provides a technical reference for the aerial image color information generation and quality assessment.