Wavelet approximation-based affine invariant shape representation functions

2006 ◽  
Vol 28 (2) ◽  
pp. 323-327 ◽  
Author(s):  
I. El Rube ◽  
M. Ahmed ◽  
M. Kamel
Keyword(s):  
Shape Representation ◽  
Affine Invariant ◽  
Wavelet Approximation ◽  
Invariant Shape

scholarly journals Affine-Invariant Feature Extraction for Activity Recognition

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Samy Sadek ◽  
Ayoub Al-Hamadi ◽  
Gerald Krell ◽  
Bernd Michaelis
Keyword(s):  
Activity Recognition ◽  
Shape Representation ◽  
Svm Classifier ◽  
Affine Invariant ◽  
Computationally Efficient ◽  
Invariant Representation ◽  
Affine Invariants ◽  
3D Volume ◽  
Affine Moment Invariants ◽  
Invariant Shape

We propose an innovative approach for human activity recognition based on affine-invariant shape representation and SVM-based feature classification. In this approach, a compact computationally efficient affine-invariant representation of action shapes is developed by using affine moment invariants. Dynamic affine invariants are derived from the 3D spatiotemporal action volume and the average image created from the 3D volume and classified by an SVM classifier. On two standard benchmark action datasets (KTH and Weizmann datasets), the approach yields promising results that compare favorably with those previously reported in the literature, while maintaining real-time performance.

scholarly journals Adaptive locally affine-invariant shape matching

2018 ◽  
Vol 29 (4) ◽  
pp. 553-572 ◽  
Author(s):  
Smit Marvaniya ◽  
Raj Gupta ◽  
Anurag Mittal
Keyword(s):  
Shape Matching ◽  
Affine Invariant ◽  
Invariant Shape
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