barrel distortion
柯林斯词典
1. N distortion of an image produced by an optical system that causes straight lines at image margins to bulge outwards 桶形畸变; 由光学系统造成的图像失真，图像边缘的直线向外膨胀[photog]
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1. N distortion of an image produced by an optical system that causes straight lines at image margins to bulge outwards 桶形畸变; 由光学系统造成的图像失真，图像边缘的直线向外膨胀[photog]