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.. _app_camera-calib: | ||
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==================================================== | ||
Application: camera-calib | ||
==================================================== | ||
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1. Description | ||
---------------- | ||
This GUI program allows users to perform **intrinsic camera parameters calibration** | ||
by capturing several images of a **checkerboard**. | ||
The program allows live grabbing of images as well as selection | ||
of pre-recorded image files. | ||
It also shows the reprojected points, undistorted images and a 3D | ||
view of the reconstructed camera poses. | ||
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Supported image sources: | ||
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- All cameras supported by OpenCV (webcams, firewire,…) | ||
- All cameras supported by FFmpeg (IP cameras,…) | ||
- Video files (in any format) | ||
- :ref:`Rawlog files<rawlog_format>`. | ||
- The stereo Bumblebee camera, for calibration of the individual cameras one at a time. | ||
- The RGB intensity and IR channels of Microsoft Kinect. | ||
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Precompiled binaries of this application can be found [here](download-mrpt.html) for Windows and Linux. | ||
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.. note:: | ||
You need to print a checker-board for the calibration, for example `from this web <https://calib.io/pages/camera-calibration-pattern-generator>`_ | ||
(remember to select `checkerboard` type). | ||
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2. Video tutorial | ||
-------------------- | ||
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This (old!) video tutorial explains how to use ``camera-calib`` to calibrate | ||
a camera with a checkerboard. The program captures the images of the pattern | ||
on the fly and finally computes the camera matrix and the distortion parameters, | ||
which can be saved to plain text files (or to a YAML file): | ||
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.. raw:: html | ||
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<div style="position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; height: auto;"> | ||
<iframe src="https://www.youtube.com/embed/BkZkq6zPwQM" frameborder="0" allowfullscreen style="position: absolute; top: 0; left: 0; width: 100%; height: 100%;"></iframe> | ||
</div> | ||
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3. Screenshots | ||
------------------- | ||
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.. image:: images/Cam_calib_gui_1.jpg | ||
:alt: The detected checkerboard. | ||
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The detected checkerboard. | ||
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.. image:: images/Cam_calib_gui_2.jpg | ||
:alt: The undistorted images | ||
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The undistorted images | ||
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.. image:: images/camera-calibration_kinect_ir_channel-1024x558.jpg | ||
:alt: Calibrating the infrarred (IR) channel camera of a Kinect. | ||
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Calibrating the infrarred (IR) channel camera of a Kinect. | ||
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.. image:: images/Screenshot_camera_calib_3Dview.jpg | ||
:alt: The final 3D reconstruction of the camera locations around the checkerboard | ||
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The final 3D reconstruction of the camera locations around the checkerboard. |
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.. _rawlog_format: | ||
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====================================== | ||
Rawlog format for robotics datasets | ||
====================================== | ||
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Write me! | ||
https://www.mrpt.org/Rawlog_Format |
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