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Method for performing panoramic photography with fisheye lens, camera and panoramic photography system

A technology of fisheye lens and panoramic camera, which is applied in the parts of TV system, image communication, color TV, etc. It can solve the problems of inaccurate conversion, large deformation rate and low resolution.

Active Publication Date: 2021-01-26
广东九安智能科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It is precisely because of the wide-angle shooting advantages of the fisheye camera that only one camera can monitor the whole field in a fixed environment, but the picture effect produced by the fisheye camera has the following problems: low resolution, large deformation rate, and cannot be accurately converted into human Acceptable angle of view

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for panoramic photography utilizing a fisheye lens, comprising the steps of:

[0032] Step 1: Obtain a panoramic image through a fisheye lens and an image sensor; wherein, the distortion parameter of the fisheye lens is linear distortion;

[0033] Step 2: Correct the panoramic image on the image sensor according to the correction parameters to obtain the corrected panoramic image; wherein, the correction parameters include user-specified optical center, magnification, and mapping model parameters;

[0034] Step 3: Map the panoramic image rectified in step 2 onto a plane or a curved surface to obtain images in different application scenarios.

[0035] Specifically, the correction method of the present invention is specifically: S31: Determine the range of the image to be corrected according to the optical center and the preset magnification; because the image obtained by the fisheye lens will be displayed in the image sensor, at this time, The user only needs t...

Embodiment 2

[0042] This embodiment discloses a panoramic camera system. The method described in Embodiment 1 is implemented through the panoramic camera system. Specifically, the panoramic camera system includes a camera using a fisheye lens, a controller, a display, a communication unit, and a mobile terminal. The camera using the fisheye lens described above is connected to the controller;

[0043] The video camera includes a fisheye lens and an image sensor arranged in the fisheye lens, wherein

[0044] The distortion parameter of described fisheye lens is linear distortion;

[0045] The lens focal length is 0.82mm±3%; the lens angle range is 220°

[0046] Described controller comprises:

[0047] Panoramic image acquisition unit: used to control the fisheye lens and image sensor to acquire panoramic images;

[0048] Panoramic image correction unit: used to correct the panoramic image on the image sensor according to the correction parameters to obtain the corrected panoramic image; ...

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PUM

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Abstract

The invention belongs to the field of imaging, and it is used to solve the problems of poor imaging effect accuracy and large deformation rate of panoramic cameras in the prior art. It discloses a method for panoramic photography using a fisheye lens, which includes the following steps: Step 1: through The fisheye lens and the image sensor acquire the panoramic image; wherein, the distortion parameter of the fisheye lens is linear distortion; Step 2: Correct the panoramic image on the image sensor according to the correction parameters to obtain the corrected panoramic image; Step 3: Map the panoramic image corrected in step 2 onto a plane or a curved surface to obtain images in different application scenarios. At the same time, the invention also discloses a camera and a camera system, which have good imaging effect, low deformation rate, and are suitable for various display interfaces of fixed and mobile terminals.

Description

technical field [0001] The invention relates to the field of imaging, in particular to a method for panoramic photography by using a fisheye lens, a camera and a panoramic photography system. Background technique [0002] At present, mobile video is developing rapidly, and mobile devices (mobile phones, tablets and other forms of mobile devices) have become a part of people's lives. At the same time, security issues have become another major concern of people. [0003] A fisheye camera is a large-angle camera device, and a fisheye lens is a lens with a focal length of 16mm or less and a viewing angle close to or equal to 180°. It is an extreme wide-angle lens, "fisheye lens" is its common name. In order to maximize the photographic angle of view of the lens, the diameter of the front lens of this photographic lens is very short and protrudes toward the front of the lens in a parabolic shape, which is quite similar to the eyes of a fish, hence the name "fisheye lens". The f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/232
CPCH04N23/80H04N23/698
Inventor 李鸿
Owner 广东九安智能科技股份有限公司