barrel distortion

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Related to Image distortion: Barrel Distortion, Pincushion distortion

barrel distortion

See distortion.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006

barrel distortion

[′bar·əl dis′tȯr·shən]
(optics)
A defect in an optical system whereby lateral magnification decreases with object size; the image of a square then appears barrel-shaped.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

barrel distortion

A screen distortion in which the sides bow out. Contrast with pincushioning.
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References in periodicals archive ?
He was restricting food intake, skipping meals, eating very few low-calorie food, walking continuously to lose weight, had body image distortion and was intensely preoccupied with fear of weight gain.
Body image distortion in AN was characterised by Bruch (4) as a feature with delusional proportions.
Caption: Figure 2: Coronal proton density with metal reduction MRI of the right knee demonstrates significant image distortion (white arrows) from metallic artifacts, obscuring accurate evaluation of the medial femoral condyle articular surface.
Subsequently, we performed restricted pixel compensation to minimize the image distortion, as explained in subsection 3.2.
In the analysis of body image distortion, it was observed that, in both groups, there was a higher prevalence of normality, that is, an absence of distortion.
Because these algorithms improve the watermarked image quality only by attempting to increase predictive precision or height of peak point, they do not consider how to decrease watermarked image distortion, especially the number of shifted pixels under the same height of histogram.
However, the main problem for content-based image matching is the image distortion. If two frames are taken in different view angle and position, the objects distortions in them are different, and image content similarity between the two frames is difficult to be calculated.
Regarding body image distortion, overestimation of body shape was a risk factor, increasing by 2.55 times the chance of signs and symptoms related to ED, and body image dissatisfaction related to the desire to decrease body size increased by 13.45 times the chance of this disorder.
To offer a reliable way of collecting spatial-temporal data, camera parameter calibration methods and image distortion correction problems are explored under aerial shooting conditions.
Moreover, a recent scheme based on image distortion analysis (IDA) [12] for face liveness detection was proposed in which four different features were extracted i.e.
The Helix will automatically adjust photos when printing on tapered cylinders and remember the settings to eliminate image distortion or the need to manually edit the picture.