公开(公告)号：US09866772B2

公开(公告)日：2018-01-09

申请号：US14968117

申请日：2015-12-14

Applicant: Axis AB

Inventor： Henning Gredegard ,  Bjorn Ardo ,  Dawid Studzinski

IPC: H04N5/232 ,  H04N5/262 ,  H04N5/77 ,  G06T3/00 ,  G06T5/00 ,  H04N5/357 ,  H04N5/217

CPC classification number: H04N5/357 ,  G06T3/0018 ,  G06T5/006 ,  H04N5/217 ,  H04N5/23296 ,  H04N5/2628 ,  H04N5/3572 ,  H04N5/772

Abstract: A method for correcting and presenting a barrel distorted image is disclosed. In the method an output image is created having a user-defined aspect ratio (AR), and the method comprises acquiring a continuous flow of barrel distorted images in a video camera and processing the image in an image processing unit. The processed image is added as an output image to an image stream, and the actual processing includes applying a barrel distortion correction so as to form a corrected image having a smallest width (w′) and a smallest height (h′), and generating the output image by cropping the corrected image to a height exceeding or equaling the smallest height (h′) and having the user-defined aspect ratio (AR).