Chapter 1
Introduction 1
1.1 Motivation……………………………………………………………........2
1.2 overview of multi-projector system ......................................................2
1.2.1 Luminance mismatch……………….……………...……………………3
1.2.2 Color mismatch………………………………………………………….3
1.2.3 Overlapped region……………………………………………………...4
1.2.4 Surface distortion……………………………………………………......5
1.3 Organization of this paper………………………………………………….6
Chapter 2
System overview 7
2.1 Related work………………………………………………………………...7
2.1.1 LAM(Luminance value Attenuation Map )...............................................7
2.1.2 Alpha blending…………………………………………………………10
2.1.3 Bilinear interpolation…………………………………………………...14
2.2 Hardware system…………………………………………………………..14
2.3 Flow chart of the systems…………………………………………..……...15
2.4 User interface of the systems……………………..……………………….17
2.5 Background………………………………………………………………...17
Chapter 3
Geometric calibration 20
3.1 Geometric correction for horizontal line……………………..…..………21
3.1.1 System overview………………………………………………….....21
3.1.2 Divide overlapped region………………….…...…………………..22
3.1.3 Match lines………………..…………………………………………22
3.1.4 Record parameters…………………………………...………………24
3.1.5 Bilinear interpolation…...……………………………………………25
3.2 Geometric correction for vertical lines…………………………..……..24
3.2.1 System overview………………………..…………………………25
3.2.2 Define parameters………………………………………………….25
3.2.3 Resize projection screen………………………..………………….26
3.2.4 Select mode………………………………………………………..26
3.2.5 Modify image……………………………………………………...28
3.3 Summary……………………………………………...…………………....28
Chapter 4
Photometric calibration 30
4.1 luminance balance………………………………………………………....30
4.1.1 System overview…………………………………………………….31
4.1.2 Define parameters…………………………...……………………….31
4.1.3 Geometric calibration………………………………..………………32
4.1.4 Data Capture for Luminance value Correction……………...………33
4.1.5 Generate MLAM………………………………………….…………34
4.1.6 Image Modification………………………………………………...35
4.1.7 Half luminance balance………………………………………35
4.1.8 Summary…………………………………………………………….37
4.2 Linear color match………………………………………………………39
4.2.1 System overview…………………………………………………….39
4.2.2 Color match loop…………………………………………………….41
4.2.3 Linear interpolation…………………………………………………44
4.2.4 Summary…………………………………………………………….45
4.3 Edge blending……………………………………………………………47
4.3.1 System overview…………………………………………………….47
4.3.2 Crossover equalization……………………………………………..50
4.3.3 Region modify curve………………………………………………52
4.3.4 Smooth…………………………………………………….............55
4.3.5 Summary…………………………………………………………..57
4.4 Photometric calibration loop………………………………………….....59
Chapter 5
Experimental Result and Discussion 60
5.1 Experimental results..................................................................................60
5.1.1 Experimental results of single color input…………...….62
5.1.2 Experimental results of colorful image………………….63
Chapter 6
Conclusions and Future works 68
6.1 Conclusions 68
6.2 Future works……………………….……………………………………69
References 70
作者簡歷 72
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