barrel distortion

基本解釋

Method for correction of barrel distortion due to wide-angle lenses based on a polynomial;
為了修正廣角鏡頭的桶形畸變，本文提出了一種基于樣條函數的修正方法。
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.
這款EF-S 15-85mm鏡頭在焦距15毫米的桶形變形失真嚴重（3.15％），雖然這有些令人失望但是對這種鏡頭來說也正常。
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，在背投式圖像顯示裝置（1）中可以實現基于遠程操作的枕形失真、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