Search results
Results from the WOW.Com Content Network
Colour banding is a subtle form of posterization in digital images, caused by the colour of each pixel being rounded to the nearest of the digital colour levels. While posterization is often done for artistic effect, colour banding is an undesired artifact.
Unwanted posterization, also known as banding, may occur when the color depth, sometimes called bit depth, is insufficient to accurately sample a continuous gradation of color tone. As a result, a continuous gradient appears as a series of discrete steps or bands of color — hence the name.
This is an accepted version of this page This is the latest accepted revision, reviewed on 21 January 2025. Art and practice of creating images by recording light For other uses, see Photography (disambiguation). Photography of Sierra Nevada Photography is the art, application, and practice of creating images by recording light, either electronically by means of an image sensor, or chemically ...
This category contains categories and articles relating to the theory and methodology of composing and/or taking photographs, or to their manipulation during or after processing.
An art movement is a tendency or style in art with a specific art philosophy or goal, followed by a group of artists during a specific period of time, (usually a few months, years or decades) or, at least, with the heyday of the movement defined within a number of years.
See Art periods for a chronological list. This is a list of art movements in alphabetical order. These terms, helpful for curricula or anthologies, evolved over time to group artists who are often loosely related. Some of these movements were defined by the members themselves, while other terms emerged decades or centuries after the periods in ...
The drawing on the upper right shows a moiré pattern. The lines could represent fibers in moiré silk, or lines drawn on paper or on a computer screen. The nonlinear interaction of the optical patterns of lines creates a real and visible pattern of roughly parallel dark and light bands, the moiré pattern, superimposed on the lines. [4]
Mach bands can also appear when there is a discontinuity in the derivative of a gradient, a visual effect common when intensities are linearly interpolated such as in Gouraud shading. Computer image processing systems use edge-detection in a way analogous to the brain, using unsharp masking to clarify edges in photos for example.