目的 研究高动态影像( HDR) 在低动态范围显示设备上的高保真显示问题。 方法 采用图像色貌模型( iCAM) 设计高动态影像的再现技术框架,并使用 C + + 语言搭建软件实现系统,通过计算机测试平台对输入图片进行了实证,算法重点是处理影像的明视度。 结果 显示图像的动态范围被拓展 10% 以上,色差小于1 . 6 ΔE^*_ab,图像细节得到了加强,基本达到了高动态影像高保真显示的要求。 结论 可利用 iCAM 框架来实现高动态影像在常规显示设备上高保真显示的问题,具有重要的理论意义与技术价值。

Objective To study the high-fidelity display problem of high dynamic images ( HDR) in the low dynamic range display equipment. Methods The image color appearance model ( iCAM) was used to design the reproduction technical framework of high dynamic images and the C++ language was applied to build a software reality system. An empirical input image was actually tested by the computer platform and the image processing algorithm focused on photopic degree. Results The results showed that the dynamic range expansion of display image was more than 10% , the color aberration was less than 1. 6 ΔE^*_ab,and the image details were strengthened,basically meeting the high-fidelity display requirement of high dynamic image. Conclusion The iCAM framework can be used to achieve the high-fidelity display of high dynamic images in common display devices and therefore has an important theoretical and technical value.