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Adobe Photoshop is a raster graphics editor developed and published by Adobe for Windows and macOS.It was created in 1987 by Thomas and John Knoll.It is the most used tool for professional digital art, especially in raster graphics editing, and its name has become genericised as a verb (e.g. "to photoshop an image", "photoshopping", and "photoshop contest") [7] although Adobe disapproves of ...
Image editing encompasses the processes of altering images, whether they are digital photographs, traditional photo-chemical photographs, or illustrations. Traditional analog image editing is known as photo retouching, using tools such as an airbrush to modify photographs or edit illustrations with any traditional art medium.
A negative image on film is traditionally used to photographically create a positive image on a paper base, known as a print, either by using an enlarger or by contact printing. Before the emergence of digital photography , photographs on film had to be developed to produce negatives or projectable slides, and negatives had to be printed as ...
Felice Varini's 2014 work Three Ellipses for Three Locks in Hasselt, Belgium is an image of three loops that are made up of segments painted on to over 100 buildings. It is only visible from a specific vantage point over the city. [13] Jean-Max Albert, Un carré pour un square, from the specific vantage point, Place Fréhel, Paris(1988)
In graphics software, layers are the different levels at which one can place an object or image file. In the program, layers can be stacked, merged, or defined when creating a digital image. Layers can be partially obscured allowing portions of images within a layer to be hidden or shown in a translucent manner within another image.
An example of this is using a manually-created coarse matte with a trimap segmentation, so called because it separates the image into three regions: known background, known foreground, and an unknown region. In this case, the algorithm attempts to label the unknown region based on the user's input, and the user can iterate through multiple ...
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. The usual result is a negative shadow image that shows variations in tone that depends upon the transparency of the objects used.
This is commonly used in fields such as time-domain astronomy (known primarily as difference imaging) to find objects that fluctuate in brightness or move. In automated searches for asteroids or Kuiper belt objects , the target moves and will be in one place in one image, and in another place in a reference image made an hour or day later.