Aliasing

RO: Aliasing EN: Aliasing

Fotografie

A type of digital image distortion most often seen when straight lines or edges in a digital image are enlarged to the point at which they appear jagged.
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73%

Accuracy

Aliasing

The jagged appearance of a digital image s diagonal and curved lines, resulting from the square shape of pixels. (See Anti-aliasing below for additional information.).

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Aliasing

A digital artifact consisting of patterns or shapes that have no relation in size and orientation with those found in the original image. This is often caused by too low a scan resolution or sampling rate. The best solution is to acquire the image at a sufficient sampling rate or use an anti-aliasing algorithm.

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Aliasing

This is an effect caused by sampling an image at to low a rate. It causes rapid change (high texture) areas of an image to appear as a slow change in the sample image. Once this has happened, it is extremely difficult to reproduce the original image from the sample.

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Aliasing

Artifact created by the presence of frequencies in the image that are too high compared to the sampling frequency of the sensor. Staircasing-effects or Moiré patterns are two different forms of aliasing.

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Aliasing

Commonly seen as jaggies or jagged edges on diagonal lines in a video image, this defect or distortion results from sampling limitations. Also seen as twinkling or brightening (beating) in picture detail.

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Aliasing

Digital images are made up of square pixels and when the image is low resolution there are fewer pixels per inch. This creates a rough step-like appearance that is most noticeable on diagonal straight edges. This staircase effect is often described as jagged. .

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Aliasing

Efect de zimtuire a liniilor care cad oblic in raport cu reteaua captatorului digital. Vezi si antialiasing. .

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71%

Accuracy

Aliasing

The process by which smooth curves and lines that run diagonally across the screen of a low-resolution digital file take on a jagged look as opposed to a smooth, natural rendition. Aliasing is an artifact that results from a sample resolution that is not more than twice the frequency of what is being captured, or the Nyquist Rate. A common form of aliasing is moiré. Smoothing and anti-aliasing techniques can reduce the effects of aliasing.

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