1. Wavelet in POCS for image segment
Representation
Source: Electronics Letters, 2003 Vol. 39 No. 19 PP Authors: Y. Liu and S. Ranganath Presented by: C.Y.Gun
Date: 5/5 2005

2. Outline Abstract Introduction (POCS, Initial padding, CSMask)
Proposed Method
Experimental results and comparisons
Reference

3. Introduction

4. Introduction
(1)
(2)
(3)
(4)
(5)

5. Proposed Method Initial padding: (a) Zero padding (ZR)
(b) Mirroring (MR)
(c) Object-based padding (OBP) 8 1 8 1 A
(c)
Figure 2

6. Proposed Method
Figure 3:

7. Coefficient selection mask (CSMask):
Proposed Method
Coefficient selection mask (CSMask): 1 1 1 1
(e)
(b)
(c)
(d)

8. Proposed Method
Figure 4:

9. Proposed Method
TCS
RSS
(a)
Figure 5:

10. Proposed Method g0 g1 g2 256 DWT IDWT Projection on TCS
Projection on RSS

11. Proposed Method g0 g0 g1 g1 g2 g3 g2 g3 g4 g* RSS g4 g* TCS RSS TCS
Figure 6:

12. Proposed Method
Extrapolation

13. Proposed Method
DWT
Figure 8

14. Proposed Method
IDWT
RSS
Figure 8:

15. Experimental results and comparisons
Figure9:

16. Experimental results and comparisons
Figure 10:

17. Experimental results and comparisons
Figure 11:

18. References
TALLURI, R., et al.: ‘A robust, scalable, object-based video compression technique for very low bit-rate coding’, IEEE Trans. Circuits Syst. Video Technol., 1997, 7, (1), pp. 221–233
YOULA, D.C.: ‘Mathematical theory of image restoration by the method of convex projections’ in STARK, H. (Ed.): ‘Image recovery: theory and applications’ (Academic Press, 1987)
CHEN, H.H., CIVANLAR, M.R., and HASKELL, B.G.: ‘A block transform coder for arbitrarily shaped image segments’. Proc. International Conference on Image processing, Austin, TX, 1994, Vol. 1, pp. 85–89