High-dynamic-range imaging (HDRI) is a high dynamic range (HDR) technique used in imaging and photography to reproduce a greater dynamic range of luminosity than is possible with standard digital imaging or photographic techniques. The aim is to present a similar range of luminance to that experienced through the human visual system. The human eye, through adaptation of the iris and other methods, adjusts constantly to adapt to a broad range of luminance present in the environment. The brain continuously interprets this information so that a viewer can see in a wide range of light conditions.
CinePaint is an open source computer program for painting and retouching bitmap frames of films. It is a fork of version 1.0.4 of the GNU Image Manipulation Program (GIMP). It enjoyed some success as one of the earliest open source tools developed for feature motion picture visual effects and animation work. The main reason for this adoption over mainline gimp was its support for high bit depths which can be required for film work. The mainline GIMP project later added high bit depths in GIMP 2.9.2, released November 2015. It is free software under the GNU General Public License.
In photography and cinematography, a multiple exposure is the superimposition of two or more exposures to create a single image, and double exposure has a corresponding meaning in respect of two images. The exposure values may or may not be identical to each other.
High-dynamic-range rendering, also known as high-dynamic-range lighting, is the rendering of computer graphics scenes by using lighting calculations done in high dynamic range (HDR). This allows preservation of details that may be lost due to limiting contrast ratios. Video games and computer-generated movies and special effects benefit from this as it creates more realistic scenes than with the more simplistic lighting models used.
Tone mapping is a technique used in image processing and computer graphics to map one set of colors to another to approximate the appearance of high-dynamic-range images in a medium that has a more limited dynamic range. Print-outs, CRT or LCD monitors, and projectors all have a limited dynamic range that is inadequate to reproduce the full range of light intensities present in natural scenes. Tone mapping addresses the problem of strong contrast reduction from the scene radiance to the displayable range while preserving the image details and color appearance important to appreciate the original scene content.
Raster graphics editors can be compared by many variables, including availability.
High dynamic range (HDR) is a dynamic range higher than what is considered to be standard dynamic range. The term is often used in discussing display devices, photography, 3D rendering, and sound recording including digital imaging and digital audio production. The term may apply to an analog or digitized signal, or to the means of recording, processing, and reproducing such signals.
PTGui is a panorama photo stitching program for Windows and macOS developed by New House Internet Services BV. PTGui was created as a GUI frontend to Helmut Dersch's Panorama Tools. It features its own stitching and blending engine along with compatibility to Panorama Tools. PTGui supports telephoto, normal, wide angle and fisheye lenses to create partial cylindrical up to full spherical panoramas. PTGui can handle multiple rows of images.
dcraw is an open-source computer program which is able to read numerous raw image format files, typically produced by mid-range and high-end digital cameras. dcraw converts these images into the standard TIFF and PPM image formats. This conversion is sometimes referred to as developing a raw image since it renders raw image sensor data into a viewable form.
SilverFast is the name of a family of software for image scanning and processing, including photos, documents and slides, developed by LaserSoft Imaging.
HDR PhotoStudio is a discontinued high dynamic range (HDR) graphics application developed by Unified Color for Windows and macOS operating systems. In addition to being a HDR-merge application, HDR PhotoStudio offered a set of image editing operations that work in its dynamic range, human color range (gamut), and in high precision. It also had a Color Integrity feature that allowed users keeping an image's color tone during HDR PhotoStudio image editing operations — for example changing the contrast of an image would not change image's chromatic data. This problem is usually referred to as "color shift".
In image processing, computer graphics, and photography, exposure fusion is a technique for blending multiple exposures of the same scene into a single image. As in high dynamic range imaging, the goal is to capture a scene with a higher dynamic range than the camera is capable of capturing with a single exposure. However, because no HDR image is ever created during exposure fusion, it cannot be considered a true HDR technique.
Luminance HDR, formerly Qtpfsgui, is graphics software used for the creation and manipulation of high-dynamic-range images. Released under the terms of the GPL, it is available for Linux, Windows and Mac OS X. Luminance HDR supports several High Dynamic Range (HDR) as well as Low Dynamic Range (LDR) file formats.
Oloneo PhotoEngine is a popular digital image editing software application developed by Paris-based Oloneo SAS. The application produces high-dynamic-range images and tone mapped images by programatically combining standard-dynamic range images of different exposures. PhotoEngine supports 96-bit per pixel HDR image files in RAW and TIFF formats.
Nik Software was a software development company established in 1995 and based in San Diego, California. The company developed multiple image editing plug-ins and tools and Snapseed, a popular image enhancement application for iOS and Android.
Aurora HDR is photographic software developed by Macphun Software for Mac OS X and Windows. MacPhun changed its name to Skylum in early 2018.
High-dynamic-range video describes video having a dynamic range greater than that of standard-dynamic-range video .Key characteristics of HDR video are brighter whites, deeper blacks, and at least a 10-bit color depth in order to maintain precision across this extended range. While technically distinct, the term "HDR video" is commonly understood to imply wide color gamut as well.
EasyHDR is photographic software developed by Bartłomiej Okonek for macOS and Microsoft Windows since February 2006.
JPEG XT is an image compression standard which specifies backward-compatible extensions of the base JPEG standard.
