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Gaussian blur. In image processing, a Gaussian blur (also known as Gaussian smoothing) is the result of blurring an image by a Gaussian function (named after mathematician and scientist Carl Friedrich Gauss ). It is a widely used effect in graphics software, typically to reduce image noise and reduce detail. The visual effect of this blurring ...
Basics of image editing. Raster images are stored in a computer in the form of a grid of picture elements, or pixels. These pixels contain the image's color and brightness information. Image editors can change the pixels to enhance the image in many ways. The pixels can be changed as a group, or individually, by the sophisticated algorithms ...
Noise reduction is the process of removing noise from a signal. Noise reduction techniques exist for audio and images. Noise reduction algorithms may distort the signal to some degree. Noise rejection is the ability of a circuit to isolate an undesired signal component from the desired signal component, as with common-mode rejection ratio .
Example of 3 median filters of varying radiuses applied to the same noisy photograph. The median filter is a non-linear digital filtering technique, often used to remove noise from an image or signal. Such noise reduction is a typical pre-processing step to improve the results of later processing (for example, edge detection on an image).
Using Lorem ipsum to focus attention on graphic elements in a webpage design proposal One of the earliest examples of the Lorem ipsum placeholder text on 1960s advertising. In publishing and graphic design, Lorem ipsum (/ ˌ l ɔː. r ə m ˈ ɪ p. s ə m /) is a placeholder text commonly used to demonstrate the visual form of a document or a typeface without relying on meaningful content.
Circle of confusion. In optics, a circle of confusion (CoC) is an optical spot caused by a cone of light rays from a lens not coming to a perfect focus when imaging a point source. It is also known as disk of confusion, circle of indistinctness, blur circle, or blur spot . In photography, the circle of confusion is used to determine the depth ...
"Charmless Man" is a song by English alternative rock band Blur and is the fourth track on their fourth studio album, The Great Escape (1995). It was released on 29 April 1996 in the United Kingdom as the fourth and final single from that album, reaching number five on the UK Singles Chart and also charting in Australia, France, Iceland, and Ireland.
A bilateral filter is a non-linear, edge-preserving, and noise-reducing smoothing filter for images. It replaces the intensity of each pixel with a weighted average of intensity values from nearby pixels. This weight can be based on a Gaussian distribution. Crucially, the weights depend not only on Euclidean distance of pixels, but also on the ...