A Study of Unsharp Masking on HDR Visualization on low Dynamic Range Devices

摘要

To visualize HDR contents on low dynamic range displays, a fast and efficient TMO is often preferred. One way to achieve this is to use a Global TMO. However. Global TMO often results in poor contrast tone-mapped images and often needs a post-process that enhances the contrast, such as Unsharp Masking. This work illustrates that such Unsharp Masking can be directly-integrated into several global TMOs, resulting in an alternative framework to apply the Unsharp Masking to the HDR visualization pipeline. The proposed framework is fast and delivers images with a proper contrast without the need for the additional image sharpening at the post process.