Fisheye camera shadow correction parameter determination method, correction method and device, fisheye camera

A fisheye camera and shadow correction technology, applied in the field of image processing, can solve problems such as affecting the user's imaging effect, poor correction effect, etc., to ensure the uniformity of brightness, improve the effect, and avoid reflection or occlusion.

Inactive Publication Date: 2020-08-04
SHANGHAI XIAOYI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the existing technology, when performing shading correction on the image acquired by the whole machine, there are parts that are too bright or have abnormal colors on the circular border, resulting in poor correction effect and affecting the imaging effect when users use it.

Method used

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  • Fisheye camera shadow correction parameter determination method, correction method and device, fisheye camera
  • Fisheye camera shadow correction parameter determination method, correction method and device, fisheye camera
  • Fisheye camera shadow correction parameter determination method, correction method and device, fisheye camera

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Embodiment Construction

[0030] As mentioned in the background technology, when the existing technology performs shading correction on the images acquired by the whole machine, due to the impact of the black circular edge of the lens on the brightness or chromaticity average statistics of the block where it is located, the corrected lens edge There are parts that are too bright or have abnormal colors in the normal imaging area, which will affect the imaging effect when users use it.

[0031] When the technical solution of the present invention determines the correction parameters, the original image used is taken by the fisheye camera when the casing is not installed; by obtaining the original image by shooting when the casing is not installed, the casing of the camera can be prevented from imaging the fisheye camera The impact of reflection or occlusion caused by time, so as to ensure the uniformity of brightness of the original image, and then ensure the accuracy of the correction parameters calcula...

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Abstract

A method for determining shadow correction parameters of a fisheye camera, a correction method and device, and a fisheye camera. The method for determining shadow correction parameters of a fisheye camera includes: acquiring an original image of the fisheye camera, the original image being the fisheye camera when the fisheye camera is not installed The outer shell is photographed; the luminance information and chromaticity information of each block of the original image are counted; and the correction parameters of the fisheye camera are calculated according to the luminance information and chromaticity information of each block. The correction effect of the fisheye camera during shadow correction can be improved through the technical scheme of the invention.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to a method for determining shadow correction parameters of a fisheye camera, a correction method and device, a storage medium, and a fisheye camera. Background technique [0002] With the advancement of technology, cameras have been improved accordingly, but still face some problems. Especially when light passes through the lens of a camera, the refraction of light causes the light to bend. The bending of light results in uneven brightness across the sensor, making the center much brighter than the edges. This distortion is called lensshading or vignetting. Variations or imperfections in the lens can increase the non-uniformity to the light passing through the lens. Additionally, light may be blocked or not pass through as a result of the interaction of the lens case. Therefore, due to imperfections in the lens and image-forming medium (film or digital sensor s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/225H04N9/77
CPCH04N9/77H04N23/51H04N23/55G06T5/008G06T2207/20021G06T2207/20012G06T2207/10024G06T7/80G06F17/18
Inventor 王肖敏吕婷珊黄池翔
Owner SHANGHAI XIAOYI TECH CO LTD
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