PUKYONG

Depth and Disparity Visualization of 3D Camera Images in Stereoscopic Imaging Technology

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Alternative Title
입체영상 기술에서의 3D 카메라 영상의 깊이 및 시차 시각화
Abstract
The advancement in the stereo vision technology has provided a modern approach in the process of making 3D movies, animations and graphics. In the world of 3D, stereoscopic imaging technology has been extensively used in many applications ranging from Augmented Reality to Virtual Reality. Also, 3D imaging systems is always a challenging task in order to control the convergence and focus of the pair of cameras so as to obtain a clear stereoscopic (3D) image.
The main goal of this research is to extract more accurate and abundant information related with depth and disparity estimation of stereo image pairs by image processing techniques. The visual perception to view a pair of 2D images simultaneously is a crucial factor to build a 3D image. In this thesis, we present the effect of binocular cues (depth and disparity) between the intensities of two stereo images which has essential relevance for the visualization of a stereoscopic or 3D image. Due to this stereoscopic effect, two images of the same scene taken at slightly different positions from the cameras differ in their horizontal positions providing the depth visualization between two images. The term ‘disparity’ represents the amount of horizontal shifting between the left camera image and the right camera image. Meanwhile, this dissertation seeks to investigate the formation of a 3D image from two stereo image pairs and obtain other relevant information related to it. Thus, this thesis reviews the study based on the comparison between two stereo image pairs and acquiring the significant analytical and calculative approach in the domain of 3D visualization.
Author(s)
RohitRamesh
Issued Date
2011
Awarded Date
2011. 8
Type
Dissertation
Publisher
Pukyong National University and Department of Telecommunication Engineering
URI
https://repository.pknu.ac.kr:8443/handle/2021.oak/9248
http://pknu.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000001965257
Department
대학원 정보통신공학과
Advisor
Shin-il Jeong
Table Of Contents
Table of Contents
List of Figures iv
List of Tables vi
List of Abbreviations vii
Acknowledgement viii
Abstract x
1.0 Introduction 1
1.1 Motivation 2
1.2 Challenges 2
1.3 Research Aims 3
1.4 Contribution 5
1.5 Chapter Organization and Summary 7
2.0 Literature Reviews and Related Works 8
2.1 Background of Stereoscopic Imaging Technology 8
2.2 Formation of 3D Anaglyph Images 9
2.3 Depth Perception in 3D Image 11
2.3.1 Monocular Cues 11
2.3.2 Binocular Cues 11
2.4 Binocular Horizontal Disparity 12
2.5 Related Works 15
2.6 Chapter Summary 16
3.0 Depth and Disparity Maps of Stereoscopic Image Pairs 18
3.1 Depth Map 18
3.1.1 3D Visualization of Depth Map 19
3.2 Effects of Disparity and Depth on 3D Images 21
3.2.1 Movement of Stereoscopic Camera Rig 21
3.2.2 Depth Visualization of Objects at Different Locations 24
3.3 Disparity Map 26
3.3.1 Median Filtered Disparity Map 27
3.4 Chapter Summary 29

4.0 Horizontal Disparity Visualization 30
4.1 Texture Extraction Algorithm 30
4.1.1 Edge Detection by ‘Gabor’ Filter 31
4.1.2 Edge Detection by ‘Canny’ Filter 33
4.1.3 Comparison between ‘Gabor’ and ‘Canny’ Filter 34
4.2 Stereo Matching Algorithm 35
4.2.1 Correlation Method 35
4.2.2 QSPDE (Proposed Method) 37
4.2.3 Comparison between Correlation and QSPDE Methods 40
4.3 Image Fusion Algorithm 41
4.3.1 Uni-Directional Horizontal Disparity 42
4.3.2 Bi-Directional Horizontal Disparity 44
4.3.3 Grayscale Representation 46
4.4 Chapter Summary 47
5.0 Image Quality Measurements 48
5.1 MSE 48
5.2 PSNR 49
5.3 Normalized CC 50
5.4 Maximum Difference 50
5.5 Pixel’s Disparity Estimation 51
5.6 Chapter Summary 53
6.0 Experimental Results and Discussions 54
6.1 Performance of Stereoscopic Image Quality Measurements 54
6.2 Chapter Summary 60
7.0 Conclusions and Future Works 61
7.1 Overall Conclusions 61
7.2 Future Direction 63
References 64
List of Publications 69
Degree
Master
Appears in Collections:
산업대학원 > 전자정보통신공학과
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