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- Image_gradient abstract "An image gradient is a directional change in the intensity or color in an image. Image gradients may be used to extract information from images.In graphics software for digital image editing, the term gradient or color gradient is used for a gradual blend of color which can be considered as an even gradation from low to high values, as used from white to black in the images to the right. Another name for this is color progression.Mathematically, the gradient of a two-variable function (here the image intensity function) at each image point is a 2D vector with the components given by the derivatives in the horizontal and vertical directions. At each image point, the gradient vector points in the direction of largest possible intensity increase, and the length of the gradient vector corresponds to the rate of change in that direction.Since the intensity function of a digital image is only known at discrete points, derivatives of this function cannot be defined unless we assume that there is an underlying continuous intensity function which has been sampled at the image points. With some additional assumptions, the derivative of the continuous intensity function can be computed as a function on the sampled intensity function, i.e., the digital image. Approximations of these derivative functions can be defined at varying degrees of accuracy. The most common way to approximate the image gradient is to convolve an image with a kernel, such as the Sobel operator or Prewitt operator.The gradient of the image is one of the fundamental building blocks in image processing. For example the Canny edge detector uses image gradient for edge detection.Image gradients are often utilized in maps and other visual representations of data in order to convey additional information. GIS tools use color progressions to indicate elevation and population density, among others.".
- Image_gradient thumbnail Gradient2.svg?width=300.
- Image_gradient wikiPageExternalLink www.imageprocessingplace.com.
- Image_gradient wikiPageExternalLink GradientFilter.html.
- Image_gradient wikiPageID "4621211".
- Image_gradient wikiPageLength "6290".
- Image_gradient wikiPageOutDegree "30".
- Image_gradient wikiPageRevisionID "683602853".
- Image_gradient wikiPageWikiLink Canny_edge_detector.
- Image_gradient wikiPageWikiLink Category:Computer_graphics.
- Image_gradient wikiPageWikiLink Category:Image_processing.
- Image_gradient wikiPageWikiLink Color.
- Image_gradient wikiPageWikiLink Color_banding.
- Image_gradient wikiPageWikiLink Color_gradient.
- Image_gradient wikiPageWikiLink Colour_banding.
- Image_gradient wikiPageWikiLink Continuous_function.
- Image_gradient wikiPageWikiLink Convolution.
- Image_gradient wikiPageWikiLink Data.
- Image_gradient wikiPageWikiLink Derivative.
- Image_gradient wikiPageWikiLink Digital_image_editing.
- Image_gradient wikiPageWikiLink Edge_detection.
- Image_gradient wikiPageWikiLink Elevation.
- Image_gradient wikiPageWikiLink Euclidean_vector.
- Image_gradient wikiPageWikiLink Geographic_information_system.
- Image_gradient wikiPageWikiLink Gradient_Domain_Image_Processing.
- Image_gradient wikiPageWikiLink Graphics_software.
- Image_gradient wikiPageWikiLink Image_Derivatives.
- Image_gradient wikiPageWikiLink Image_derivatives.
- Image_gradient wikiPageWikiLink Image_editing.
- Image_gradient wikiPageWikiLink Image_processing.
- Image_gradient wikiPageWikiLink Map.
- Image_gradient wikiPageWikiLink Maps.
- Image_gradient wikiPageWikiLink Population_density.
- Image_gradient wikiPageWikiLink Posterization.
- Image_gradient wikiPageWikiLink Prewitt_operator.
- Image_gradient wikiPageWikiLink Sobel_filter.
- Image_gradient wikiPageWikiLink Sobel_operator.
- Image_gradient wikiPageWikiLink Vector_(geometric).
- Image_gradient wikiPageWikiLink Wiktionary:gradation.
- Image_gradient wikiPageWikiLink File:Gradient2.svg.
- Image_gradient wikiPageWikiLink File:Intensity_image_with_gradient_images.png.
- Image_gradient wikiPageWikiLinkText "Gradient map".
- Image_gradient wikiPageWikiLinkText "Image gradient".
- Image_gradient wikiPageWikiLinkText "gradient of colors".
- Image_gradient wikiPageWikiLinkText "gradient".
- Image_gradient wikiPageWikiLinkText "gradients".
- Image_gradient wikiPageWikiLinkText "image gradient".
- Image_gradient hasPhotoCollection Image_gradient.
- Image_gradient wikiPageUsesTemplate Template:Citation_needed.
- Image_gradient wikiPageUsesTemplate Template:Cite_book.
- Image_gradient wikiPageUsesTemplate Template:Clarify.
- Image_gradient wikiPageUsesTemplate Template:Color_topics.
- Image_gradient wikiPageUsesTemplate Template:Commons_category.
- Image_gradient wikiPageUsesTemplate Template:Main.
- Image_gradient wikiPageUsesTemplate Template:Refimprove.
- Image_gradient subject Category:Computer_graphics.
- Image_gradient subject Category:Image_processing.
- Image_gradient hypernym Change.
- Image_gradient type Area.
- Image_gradient type Article.
- Image_gradient type Organisation.
- Image_gradient type Algorithm.
- Image_gradient type Area.
- Image_gradient type Article.
- Image_gradient type Field.
- Image_gradient comment "An image gradient is a directional change in the intensity or color in an image. Image gradients may be used to extract information from images.In graphics software for digital image editing, the term gradient or color gradient is used for a gradual blend of color which can be considered as an even gradation from low to high values, as used from white to black in the images to the right.".
- Image_gradient label "Image gradient".
- Image_gradient sameAs m.0cd150.
- Image_gradient sameAs Q17039097.
- Image_gradient sameAs Q17039097.
- Image_gradient wasDerivedFrom Image_gradient?oldid=683602853.
- Image_gradient depiction Gradient2.svg.
- Image_gradient isPrimaryTopicOf Image_gradient.