Title :
Moment invariants and quantization effects
Author :
Salarna, G.I. ; Abbott, A. Lynn
Author_Institution :
Bradley Dept. of Electr. & Comput. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
This paper considers the effect of spatial quantization on several moment invariants. Of particular interest are the affine moment invariants, which have emerged in recent years as a useful tool for image reconstruction, image registration, and recognition of deformed objects. Traditional analysis assumes moments and moment invariants for images that are defined in the continuous domain. In practice, however, the digitization process introduces errors that violate the invariance assumption. This paper presents an analysis of quantization-induced error on (two-dimensional) Hu moment invariants and affine moment invariants, and on invariants derived from (one-dimensional) contour moments. Error bounds are given in several cases
Keywords :
image reconstruction; image registration; object recognition; quantisation (signal); Hu moment invariants; affine moment invariants; deformed object recognition; digitization process; image reconstruction; image registration; invariance assumption; one-dimensional contour moments; quantization effects; quantization-induced error; spatial quantization; Ambient intelligence; Digital systems; Electrical capacitance tomography; Error analysis; Image analysis; Image recognition; Image reconstruction; Image registration; Quantization; Read only memory;
Conference_Titel :
Computer Vision and Pattern Recognition, 1998. Proceedings. 1998 IEEE Computer Society Conference on
Conference_Location :
Santa Barbara, CA
Print_ISBN :
0-8186-8497-6
DOI :
10.1109/CVPR.1998.698603
