Capture and display in wide-dynamic-range imaging
نویسنده
چکیده
It is commonly accepted1 that the dynamic range (DR) of an image, i.e. the image color definition, is equal to the image maximum signal-to-noise ratio (max SNR). We also know that the maximum amount of image information is given by the product of resolution (cross-image definition) and color definition. Therefore, increasing the DR of images is by no mean less important than increasing their resolution. It is worth remembering however that DR and resolution cannot possibly be traded-off against each other, since they live in orthogonal sub-spaces of the image. Below, we analyze the two most commonly-used methods to increase dynamic range.
منابع مشابه
Subjective Evaluation of Higher Dynamic Range Video
High dynamic range (HDR) imaging is able to capture a wide range of luminance values, closer to what the human eye can perceive. However, for capture and display technologies, it is important to answer the question on the significance of higher dynamic range for user preference. This paper answers this question by investigating the added value of higher dynamic range via a rigorous set of subje...
متن کاملHigh Dynamic Range Imaging
High dynamic range (HDR) images and video contain pixels, which can represent much greater range of colors and brightness levels than that offered by existing, standard dynamic range images. Such “better pixels” greatly improve the overall quality of visual content, making it appear much more realistic and appealing to the audience. HDR is one of the key technologies of the future imaging pipel...
متن کاملHdr Imaging for Feature Detection on Detailed Architectural Scenes
3D reconstruction relies on accurate detection, extraction, description and matching of image features. This is even truer for complex architectural scenes that pose needs for 3D models of high quality, without any loss of detail in geometry or color. Illumination conditions influence the radiometric quality of images, as standard sensors cannot depict properly a wide range of intensities in th...
متن کاملVisual Attention in Ldr and Hdr Images
Recent advances in high dynamic range (HDR) capturing and display technologies attracted a lot of interest to HDR imaging. Many issues that are considered as being resolved for conventional low dynamic range (LDR) images pose new challenges in HDR context. One of such issues is human visual attention, which has important applications in image and video compression, camera and displays manufactu...
متن کاملSelf-calibrating wide color gamut high dynamic range display
High Dynamic Range displays offer higher brightness, higher contrast, better color reproduction and lower power consumption compared to conventional displays available today. In addition to these benefits, it is possible to leverage the unique design of HDR displays to overcome many of the calibration and lifetime degradation problems of liquid crystal displays, especially those using light emi...
متن کامل