Method for processing a video stream
AssigneeAxis AB
InventorsHenning Gredegard, Bjorn Ardo, Dawid Studzinski
Life of this patent
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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).
Claims13
A method for correcting and presenting a barrel distorted image with a user-defined aspect ratio, comprising:
- acquiring a continuous flow of barrel distorted images in a video camera,
- for a barrel distorted image in the continuous flow:
- processing the image in an image processor within the video camera and adding the processed image as an output image to an image stream, wherein the processing includes
- applying a barrel-distortion correction so as enable formation of a corrected image having a minimum width and a minimum height, h′, and
- generating the output image by cropping the corrected image to a height exceeding the minimum height and having the user-defined aspect ratio.
An electronic device for correcting and presenting a barrel distorted image with a user-defined aspect ratio, comprising:
- a camera configured to acquire a continuous flow of barrel distorted images;
- and
- processing circuitry configured to, for a barrel distorted image in the continuous flow, process the barrel distorted image and add the processed image as an output image to an image stream, wherein the processing includes
- applying a barrel-distortion correction so as enable formation of a corrected image having a minimum width and a minimum height, h′, and
- generating the output image by cropping the corrected image to a height exceeding the minimum height and having the user-defined aspect ratio.
Dependencies are inferred from the claim text.