Shadow correction detection parameter determination method and device, shadow correction detection method and device, storage medium and fisheye camera

A detection parameter and shadow correction technology, which is applied in the field of image processing, can solve problems such as low reliability, time-consuming human eye detection, and limitations, and achieve the effects of reducing time-consuming detection, improving convenience, and avoiding time-consuming

Inactive Publication Date: 2020-10-09
SHANGHAI XIAOYI TECH CO LTD
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  • Application Information

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Problems solved by technology

[0004] However, when detecting the effect of lens shading correction, human eye detection is time-consuming, has limitations, and has low reliability

Method used

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  • Shadow correction detection parameter determination method and device, shadow correction detection method and device, storage medium and fisheye camera
  • Shadow correction detection parameter determination method and device, shadow correction detection method and device, storage medium and fisheye camera
  • Shadow correction detection parameter determination method and device, shadow correction detection method and device, storage medium and fisheye camera

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Embodiment Construction

[0042] As described in the background art, when detecting the effect of lens shading correction, human eye detection is time-consuming, has limitations, and has low reliability.

[0043] The technical solution of the present invention calculates at least one set of standard values ​​and deviation values ​​by calculating the correction data of the corrected image. The standard value and deviation value can represent the color shift and brightness deviation of the edge of the corrected image, so that they can be used to measure the shadow correction of the image to be detected The effect can reliably eliminate the imaging problems caused by foreign objects or improper operation during the production test calibration process, avoiding the time-consuming and low-reliability problems of the human eye detection process, and thus ensuring the reliability of shadow correction results. It can also reduce the time consumption of detection and improve the convenience of the shadow correct...

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Abstract

The invention discloses a shadow correction detection parameter determination method and device, a shadow correction detection method and device, a storage medium and a fisheye camera. The shadow correction detection parameter determination method comprises the following steps: obtaining correction data of a plurality of correction images in each block, the correction data comprising brightness information and color information, the brightness information being a ratio of brightness to brightness of a central block, and the color information being a ratio of a color value to a color value of the central block; and calculating at least one group of standard values and deviation values of each block by utilizing the brightness information and the color information of the plurality of correction images in each block, and taking the standard values and the deviation values as correction detection parameters for shadow correction detection. According to the technical scheme, the shadow correction result detection reliability can be improved.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to a method and device for determining shadow correction detection parameters, a correction detection method, a storage medium, and a fisheye camera. Background technique [0002] Lens shading (lens shading) makes the edges of the picture darker. For panoramic cameras, lens shading will cause shadow areas at the stitching place during stitching. Therefore, for panoramic cameras, corrections are made on the production line to perform dynamic shadow compensation for each lens. Since the fisheye lens field of view (Field of view, FOV) is 220°, and the angle is relatively large, it is necessary to use an integrating sphere for correction, and it is necessary to ensure that there is no foreign object blocking during manual or jig operation, otherwise the corresponding There will be more obvious brightness anomalies in the position. [0003] In the prior art, in order t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/357H04N5/20H04N5/208H04N5/232H04N5/235H04N9/64H04N9/77
CPCH04N9/64H04N5/208H04N5/20H04N9/77H04N23/81H04N23/698H04N23/70H04N25/61
Inventor 王肖敏吴勰
Owner SHANGHAI XIAOYI TECH CO LTD
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