average pixel value

См. также в других словарях:

• Dither — For other uses, see Dither (disambiguation). Provincial definition of to dither from The Rural Economy of Yorkshire: Comprizing the Management of Landed Estates, and the Present Practice of Husbandry in the Agricultural Districts of that County,… …   Wikipedia

• Computed tomography — tomos (slice) and graphein (to write).Computed tomography was originally known as the EMI scan as it was developed at a research branch of EMI, a company best known today for its music and recording business. It was later known as computed axial… …   Wikipedia

• Noise reduction — For sound proofing, see soundproofing. For scientific aspects of noise reduction of machinery and products, see noise control. Noise reduction is the process of removing noise from a signal. All recording devices, both analogue or digital, have… …   Wikipedia

• Region growing — is one of the simplest region based image segmentation methods and it can also be classified as one of the pixel based image segmentations because it involves the selection of initial seed points.This approach to segmentation examines the… …   Wikipedia

• Portable Network Graphics — PNG A PNG image with an 8 bit transparency channel (top). The same image is overlaid onto a checkered background (botto …   Wikipedia

• JPEG — For other uses, see JPEG (disambiguation). Joint Photographic Experts Group A photo of a cat compressed with successively more lossy compression ratios from right to left Filename extension .jpg …   Wikipedia

• Scale-invariant feature transform — Feature detection Output of a typical corner detection algorithm …   Wikipedia

• False-color — A false color image is an image that depicts a subject in colors that differ from those a faithful full color photograph would show.A true color image of a subject is an image that appears to the human eye just like the original subject would: a… …   Wikipedia

• Signal-to-noise ratio — For signal to noise ratio in statistics, see Cohen s d. Signal to noise ratio (often abbreviated SNR or S/N) is a measure used in science and engineering that compares the level of a desired signal to the level of background noise. It is defined… …   Wikipedia

• Supersampling — is an antialiasing technique, the process of eliminating jagged and pixelated edges (aliasing). It is a method of smoothing images rendered in computer games or other programs that generate imagery.Overview. Since pixels are uniformly colored and …   Wikipedia

• Quadtree — A quadtree is a tree data structure in which each internal node has up to four children. Quadtrees are most often used to partition a two dimensional space by recursively subdividing it into four quadrants or regions. The regions may be square or …   Wikipedia