14 relations: Astrophotography, Bias frame, Dark current (physics), Defective pixel, Digital photography, Fixed-pattern noise, Flat-field correction, Image noise, Image sensor, Long-exposure photography, Photogram, Photogrammetry, Pixel, RawTherapee.
Astrophotography is a specialized type of photography for recording photos of astronomical objects, celestial events, and areas of the night sky.
In digital photography, a bias frame is an image obtained from an opto-electronic image sensor, with no actual exposure time.
In physics and in electronic engineering, dark current is the relatively small electric current that flows through photosensitive devices such as a photomultiplier tube, photodiode, or charge-coupled device even when no photons are entering the device; it consists of the charges generated in the detector when no outside radiation is entering the detector.
Defective pixels are pixels on a liquid crystal display (LCD) that are not performing as expected.
Digital photography is a form of photography that uses cameras containing arrays of electronic photodetectors to capture images focused by a lens, as opposed to an exposure on photographic film.
Fixed-pattern noise (FPN) is the term given to a particular noise pattern on digital imaging sensors often noticeable during longer exposure shots where particular pixels are susceptible to giving brighter intensities above the general background noise.
The brightness variation due to vignetting, as shown here, can be corrected by selectively brightening the perimeter of the image. Flat-field correction is a technique used to improve quality in digital imaging.
Image noise is random variation of brightness or color information in images, and is usually an aspect of electronic noise.
An image sensor or imaging sensor is a sensor that detects and conveys the information that constitutes an image.
Long-exposure, time-exposure, or slow-shutter photography involves using a long-duration shutter speed to sharply capture the stationary elements of images while blurring, smearing, or obscuring the moving elements.
A photogram is a photographic image made without a camera by placing objects directly onto the surface of a light-sensitive material such as photographic paper and then exposing it to light.
Photogrammetry is the science of making measurements from photographs, especially for recovering the exact positions of surface points.
In digital imaging, a pixel, pel, dots, or picture element is a physical point in a raster image, or the smallest addressable element in an all points addressable display device; so it is the smallest controllable element of a picture represented on the screen.
RawTherapee is a cross-platform raw image processing program, released under the GNU General Public License Version 3.