摘要
传统显示设备由于受自身动态范围的限制无法很好地显示高动态范围图像,因此需要通过色调映射算法进行合理的动态域压缩,不同的压缩算法对图像最终的显示质量有很大的影响。综述了现有高动态范围图像的色调处理方法,分析了Reinhard基于摄影模型的色调映射算法的推导过程,通过几组对比实验分析了算法中的参数选择以及Reinhard全局色调映射算法和局部色调映射算法在处理图像上的不同优势。
Traditional display device couldn＇t display high dynamic range image well due to its dynamic range limitation, and this dynamic range mismatch must be overcome with a reasonable tone mapping method by compressing the dynamic range. This paper firstly introduced the existing tone mapping methods of HDRI. After that, it analyzed emphatically the derivation process of Reinhard＇s tone mapping algorithm. Finally, the authors analyzed the algorithm of parameter selection and the different advantages of Reinhard global tone mapping algorithm and local tone mapping algorithm in image processing through several group of experiments.
出处
《成都工业学院学报》
2013年第1期18-21,共4页
Journal of Chengdu Technological University
基金
四川省科技支撑计划(2012GZ0090)
