barrel distortion

基本解释

Method for correction of barrel distortion due to wide-angle lenses based on a polynomial;
为了修正广角镜头的桶形畸变，本文提出了一种基于样条函数的修正方法。
The EF-S 15-85mm produces a heavy degree of barrel distortion at 15mm (3.15%). While this may be somewhat disappointing it's simply normal for such lenses.
这款EF-S 15-85mm镜头在焦距15毫米的桶形变形失真严重（3.15％），虽然这有些令人失望但是对这种镜头来说也正常。
This allows pin distortion and barrel distortion, as well as trapezial distortion to be corrected by remote control in the back-projection image display device(1).
由此，在背投式图像显示装置（1）中可以实现基于远程操作的枕形失真、鼓形失真和不等腰梯形失真的校正。
ip.com

distortion of an image produced by an optical system that causes straight lines at image margins to bulge outwards