Shape Error Concealment for Shape Independent Transform Coding
Arbitrarily shaped video objects are an important
concept in modern video coding methods. The techniques presently
used are not based on image elements but rather video objects having
an arbitrary shape. In this paper, spatial shape error concealment
techniques to be used for object-based image in error-prone
environments are proposed. We consider a geometric shape
representation consisting of the object boundary, which can be
extracted from the α-plane. Three different approaches are used to
replace a missing boundary segment: Bézier interpolation, Bézier
approximation and NURBS approximation. Experimental results on
object shape with different concealment difficulty demonstrate the
performance of the proposed methods. Comparisons with proposed
methods are also presented.
[1] ISO/IEC 14496-2, "Information Technology - Coding of Audio-Visual
Objects, Part 2: Visual," December 1999.
[2] L. D. Soares, F. Pereira, "Spatial Shape Error Concealment for Objectbased
Image and Video Coding," IEEE Trans. on Image Proc., Vol. 13,
No. 4, pp. 586-599, April 2004.
[3] B. Hru┼íovsk├¢, J. Mochn├í─ì, S. Marchevsk├¢, ÔÇ×Extended Error
Concealment Algorithm for Intra-frames in H.264/AVC," Acta
Electrotechnica et Informatica, Vol. 10, No. 4, 2010, pp.59-63,
December 2010
[4] S. Shirani, B. Erol, and F. Kossentini, "A concealment method for shape
information in MPEG-4 coded video sequences," IEEE Trans.
Multimedia, vol. 2, pp. 185-190, Sept. 2000
[5] A.H. Sohel, K.C. Gour, D.S. Laurence, Image Dependent Spatial Shape
Error Concealment for Multiple Shapes." Signal-Image Technology &
Internet-Based Systems (SITIS), 10.1109/SITIS.2009.36, Marrakesh,
December 2009
[6] G. M. Schuster, X. Li, A. K. Katsaggelos, "Shape Error Concealment
Using Hermite Splines," IEEE Trans. on Image Proc., Vol. 13, No. 6,
pp. 808-820, June 2004
[7] R. Vargic, I. Kotuliak, V. Zeman, V.: Error concealment for JPEG2000
using wavelet transform, RTT2007, LiptovskÛ Ján, September 10-12,
2007, pp. 435-439
[1] ISO/IEC 14496-2, "Information Technology - Coding of Audio-Visual
Objects, Part 2: Visual," December 1999.
[2] L. D. Soares, F. Pereira, "Spatial Shape Error Concealment for Objectbased
Image and Video Coding," IEEE Trans. on Image Proc., Vol. 13,
No. 4, pp. 586-599, April 2004.
[3] B. Hru┼íovsk├¢, J. Mochn├í─ì, S. Marchevsk├¢, ÔÇ×Extended Error
Concealment Algorithm for Intra-frames in H.264/AVC," Acta
Electrotechnica et Informatica, Vol. 10, No. 4, 2010, pp.59-63,
December 2010
[4] S. Shirani, B. Erol, and F. Kossentini, "A concealment method for shape
information in MPEG-4 coded video sequences," IEEE Trans.
Multimedia, vol. 2, pp. 185-190, Sept. 2000
[5] A.H. Sohel, K.C. Gour, D.S. Laurence, Image Dependent Spatial Shape
Error Concealment for Multiple Shapes." Signal-Image Technology &
Internet-Based Systems (SITIS), 10.1109/SITIS.2009.36, Marrakesh,
December 2009
[6] G. M. Schuster, X. Li, A. K. Katsaggelos, "Shape Error Concealment
Using Hermite Splines," IEEE Trans. on Image Proc., Vol. 13, No. 6,
pp. 808-820, June 2004
[7] R. Vargic, I. Kotuliak, V. Zeman, V.: Error concealment for JPEG2000
using wavelet transform, RTT2007, LiptovskÛ Ján, September 10-12,
2007, pp. 435-439
@article{"International Journal of Electrical, Electronic and Communication Sciences:57097", author = "Sandra Ondrušová and Jaroslav Polec", title = "Shape Error Concealment for Shape Independent Transform Coding", abstract = "Arbitrarily shaped video objects are an important
concept in modern video coding methods. The techniques presently
used are not based on image elements but rather video objects having
an arbitrary shape. In this paper, spatial shape error concealment
techniques to be used for object-based image in error-prone
environments are proposed. We consider a geometric shape
representation consisting of the object boundary, which can be
extracted from the α-plane. Three different approaches are used to
replace a missing boundary segment: Bézier interpolation, Bézier
approximation and NURBS approximation. Experimental results on
object shape with different concealment difficulty demonstrate the
performance of the proposed methods. Comparisons with proposed
methods are also presented.", keywords = "error concealment, shape coding, object-based
image, NURBS, Bézier curves.", volume = "5", number = "7", pages = "833-4", }