Abstract
Multimedia information, especially images, has been consumed in people’s daily life. Due to the restriction of consumer electronics, people capture, share, and see images of low-dynamic range (LDR) on digital platform. LDR images are represented with size of 8, 10 and even 12 bits for each color channel of RGB format. Compared with range of LDR, the human visual system can distinguish more colors at a given brightness. Herein, high-dynamic range (HDR) imaging, representing each color channel with size of 32 bits, has become a welcome revolution. With the development of technology and pursuit of quality, HDR imaging is a new trend to research in academia and industry. Naturally, it will come with the issues of security to protect HDR images. However, HDR images compared with common LDR images are new encoding format, it needs specific method for processing. In this paper, the tailor-made encryption scheme is proposed to encode LogLuv format HDR images for guaranteeing confidentiality while format-compliance is achieved.Keywordshigh dynamic rangeLogLUVimage encryption
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