![]() ![]() Most image file formats are designed to match a typical display's dynamic range: values stored in the pixels go from 0.0, representing "black," to 1.0, representing the display's maximum intensity, or "white." To keep image files small, This means the brightest pixel in an image is never more than 500 times brighter than the darkest pixel. ![]() 26.1.1 High-Dynamic-Range ImagesÄisplay devices for digital images, such as computer monitors and video projectors, usually have a dynamic range of about 500 to 1. This section summarizes some of the key features for storing high-dynamic-range images. The OpenEXR Web site, has full details on the OpenEXR is a high-dynamic-range image file format developed by Industrial Light & Magic (ILM) for use in computer imaging applications. In this chapter, we describe the OpenEXR image file format, give examples of reading and writing GPU image buffers, and discuss issues associated with image display. The NVIDIA half type and stores additional data channels, as well. When you do, it's best to store it in an image file format that retains the high dynamic range possible in ![]() But occasionally you create one worth keeping. Most images created on a GPU are fleeting and exist for only a fraction of a second.
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