High Dynamic Range media watermarking issues and challanges

High Dynamic Range (HDR) imaging techniques are capable of capturing the full range of lighting in a real world scene. Unlike traditional imaging, with HDR there are no more under- or over-exposed pixels. HDR imaging techniques are therefore becoming more prevalent due to the greater quantity and quality of information they can convey with respect to traditional Low Dynamic Range (LDR) approaches. Accordingly, there is an increasing need for novel watermarking methods able to cope with the peculiarities of HDR content to prevent the misappropriation of HDR image and videos. This paper presents a review of the state of the art on HDR watermarking and highlights some associated issues and challenges.