現在位置 : 影像 > 高動態範圍成像 (High Dynamic Range Imaging)
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High dynamic range imaging (HDRI or HDR) is a set of methods used in imaging and photography, to allow a greater dynamic range between the lightest and darkest areas of an image than current standard digital imaging methods or photographic methods. HDR images can represent more accurately the range of intensity levels found in real scenes, from direct sunlight to faint starlight, and is often captured by way of a plurality of differently exposed pictures of the same subject matter.
In simpler terms, HDR is a range of methods to provide higher dynamic range from the imaging process. Non-HDR cameras take pictures at one exposure level with a limited contrast range. This results in the loss of detail in bright or dark areas of a picture, depending on whether the camera had a low or high exposure setting. HDR compensates for this loss of detail by taking multiple pictures at different exposure levels and intelligently stitching them together to produce a picture that is representative in both dark and bright areas. HDR is also commonly used to refer to display of images derived from HDR imaging in a way that exaggerates contrast for artistic effect. The two main sources of HDR images are computer renderings and merging of multiple low-dynamic-range (LDR) or standard-dynamic-range (SDR) photographs. Tone mapping methods, which reduce overall contrast to facilitate display of HDR images on devices with lower dynamic range, can be applied to produce images with preserved or exaggerated local contrast for artistic effect. |
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Barcelona Catalunya - Nikola Tomovic
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"高動態範圍" 影像 (High Dynamic Range Images) -- Image Enhancement
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"高動態範圍" 影像 (High Dynamic Range Image)
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Captain Kimo's HDR Technique Revealed
Secrets of Amazing HDR Photography
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photomatix photoshop lightroom hdr photography tutorial how to post process high dynamic range
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Authors@Google: Trey Ratcliff
Photographers@Google: Trey Ratcliff
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High dynamic range (HDR) photography lets you capture the myriad colors and levels of light that you can see in the real world, and the results are amazing photographs that run the gamut from super real to surreal. Explore this fantastic realm of photography through the unique vision of renowned travel photographer Trey Ratcliff. In this book, Trey shares his phenomenal HDR photographs as well as all the backstory on the adventurous circumstances of their origin. He also reveals the techniques he used to get the final shot. The breathtaking images gracing these pages and the author's real-world advice for capturing and manipulating images will inspire you to create your own HDR magic.
So Trey also includes his simple and straightforward tutorial that teaches you everything you need to know to make your own HDR photographs, whether you're a beginner, amateur, or professional. A unique blend of practical and inspirational, this book features: - a breathtaking collection of HDR photographs - engaging explanations of how the author achieved the image - expert tips for achieving stunning results (and avoiding common mistakes) - a foolproof HDR tutorial and software recommendations About the Author Trey Ratcliff is best known for his website, StuckInCustoms.com, which is the #1 travel photography blog in the world. His photography has been featured in numerous shows around the world, as well as on ABC, NBC, FOX, and the BBC. In addition, one of his HDR photographs was the first of its kind to hang in the Smithsonian. Having grown up blind in one eye, Trey has a unique way of navigating and capturing the world around him. That vision, combined with an educational background in computer science and mathematics, leads him in an algorithm-like approach to photography that can evoke palpable memories. |
