High dynamic range imaging involves exposing and processing multiple images to create a realistic image with a wide range of light and dark contrast. It requires experience with photography and software, and can be done with powerful computer chips or commercial programs. Dynamic range affects the look of movies, landscapes, and video games.
A dynamic range in an image is the number of intensity levels between light and dark areas. In high dynamic range imaging, the general idea is to form an image that appears as realistic as the human eye sees it. Light and dark contrast can include sunlit areas and parts of an image where there are shadows. This type of image processing usually involves exposing multiple images, which are processed by a computer program. With a technique called tone mapping, an image can be processed using a computer map of colors to approximate a natural environment.
High dynamic range images can be obtained by loading multiple versions of an image to a computer. The levels of light and contrast are altered by a software program which usually stores a source file to modify the final image. These files are usually large compared to traditional image files and can take a long time to process. Several commercial imaging programs can produce high dynamic range images, often by tone mapping to make the process suitable for inexperienced users.
Working with high dynamic range imaging usually requires some experience with photography and computer software. There can be many steps to get to the finished image. Managing just a few files at once is often necessary, which can lead people to inadvertently miss steps and make mistakes. The step-by-step process, however, can be learned with practice.
Powerful computer chips, incorporating light-sensitive sensors, are sometimes included in high-end cameras to enable high dynamic range imaging. There are some computer chips that have an array of high- and low-sensitivity sensors arranged in clusters. Such chips, as of 2011, increase the dynamic range of the image but do not create as high resolution as other products. Sensor chips could also become sensitive enough to low light levels that eventually cameras might not need a flash.
High dynamic range image is used in photography and computer graphics. Often the right contrast is sought for realistic images. Computer renderings, however, can increase dynamic range more than it looks realistic, but could be used to maximize detail. Often referred to as a specification of screen quality, dynamic range generally affects the look of movies, landscapes, or lighting effects in video games. It has improved in computer displays over time, and manufacturers could be building high-definition monitors with wider dynamic ranges going beyond 2011.
Protect your devices with Threat Protection by NordVPN
