How to dewrap fisheye image to normal image by MATLAB.?

I want to convert my fisheye camera images to normal one, also I tried using MATLAB but didn't worked.Can anybody tell how to dewarp it or how can I find undistorted images using matlab camera calibration.

[Bjorn Gustavsson]

What is your use of the camera - I have some "area-specific" tools for working with this type of tasks.

[Shivani Baldwa]

I need to dewrap images either by opencv or matlab is okay. Because I need the source code by which we are doing "dewrapping".

[Bjorn Gustavsson]

OK, let me specify what I meant: If you take images of the night-sky then I have tools for you.

[Manav Babel]

Hi Bjorn, I have a similar problem: I need to find a way to map alt/az coordinates onto a fisheye image of the sky. Which tools were you talking about?

[Bjorn Gustavsson]

@Manav Babel, for analysis of multi-station images of the aurora borealis (and airglow and noctilucent clouds) I had to develop camera-calibration-tools for more general types of optical systems. These tools then also handles all sorts of mapping-functions, stereoscopic triangulation and tomography-like tools. If this is similar enough to your use-case, then you should be able to find my contact details by using the information on my profile-page here.

[Sivakandan Mani]

@Bjorn Gustavsson currently I am using airglow images, could you provide more information about this tool and how it works (some reference)

Thanks in advance

Siva

[Bjorn Gustavsson]

Hello Sivakandan,

during my PhD-work I developed geometric calibration-tools for the Auroral Large Imaging System (a multi-camera network with the ambition to do 3-D imaging of the aurora over the Kiruna region in Sweden). For this I used the known positions of stars in the sky to calibrate the lines-of-sight of the cameras. If you are interested you can find my thesis here:

Three dimensional imaging of aurora and airglow

...and the documentation of the camera-calibration and image processing tools here:

AIDA: Auroral Image Data Analysis tools

AIDA_tools have since been updated and upgraded, but you should be able to get the gist of what it provides from this. The toolbox contains all sort of spatial image-analysis tools for aurora and airglow analysis. However, it builds on my more general camera-models instead of the standard pinhole (with distortion-addons) models provided by matlab and other standard tools.

Answer 1

[Image Analyst]

Did you try the Mathwork method: Fisheye calibration basics