3D image reconstruction based on current stereo vision techniques
Stereo vision is a computer vision technique used that enables the computer to perceive depth in a scene or object called 3D reconstruction. This is done by capturing and analysing images taken from two cameras at a fixed distance apart. This final year project will serve as a comprehensive guide...
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| Format: | Final Year Project |
| Language: | English |
| Published: |
Nanyang Technological University
2024
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| Online Access: | https://hdl.handle.net/10356/175065 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | Stereo vision is a computer vision technique used that enables the computer to perceive
depth in a scene or object called 3D reconstruction. This is done by capturing and analysing
images taken from two cameras at a fixed distance apart.
This final year project will serve as a comprehensive guide for setting up and creating a
stereo vision system which includes camera calibration, stereo calibration, undistortion of
images and lastly 3D reconstruction which is all incorporated within a desktop application
developed by the author for the ease of use.
This report will also dive into the theories behind stereo vision such as epipolar geometry,
the essential and fundamental matrices that is used to relates the points in the two camera
views. This report will discuss principles such as the pinhole camera model which this project
is based after and the basic geometric projection. Additionally, this report will explain the
various distortion that may appear the images and how it will be rectified. Lastly, this report
will explore stereo calibration and rectification and the various block matching methods.
This report will also include findings from experiments done during this project to improve
the results and quality of 3D reconstruction. One method to improve result is to improve
camera calibration result by using a circle grid board and detecting the center of the circle to
high accuracy instead of the commonly used chessboard which aims to improve results for
calibration. This proposed method proved to be an improvement as compared to the
traditional methods at camera calibration. |
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