Invariant Image Recognition by Zernike Moments
IEEE Transactions on Pattern Analysis and Machine Intelligence
On the Accuracy of Zernike Moments for Image Analysis
IEEE Transactions on Pattern Analysis and Machine Intelligence
Image Description and Retrieval Using MPEG-7 Shape Descriptors
ECDL '00 Proceedings of the 4th European Conference on Research and Advanced Technology for Digital Libraries
Efficient computation of radial moment functions using symmetrical property
Pattern Recognition
A novel approach to the fast computation of Zernike moments
Pattern Recognition
Fast Zernike wavelet moments for Farsi character recognition
Image and Vision Computing
On the computational aspects of Zernike moments
Image and Vision Computing
A new class of Zernike moments for computer vision applications
Information Sciences: an International Journal
Accurate and efficient computation of high order zernike moments
ISVC'05 Proceedings of the First international conference on Advances in Visual Computing
On the reconstruction aspects of moment descriptors
IEEE Transactions on Information Theory
Geometric Invariance in image watermarking
IEEE Transactions on Image Processing
Fast and efficient method for computing ART
IEEE Transactions on Image Processing
Accurate Computation of Zernike Moments in Polar Coordinates
IEEE Transactions on Image Processing
Accurate Calculation of Image Moments
IEEE Transactions on Image Processing
Invariant image watermark using Zernike moments
IEEE Transactions on Circuits and Systems for Video Technology
Real-time computation of Zernike moments
IEEE Transactions on Circuits and Systems for Video Technology
Analysis of algorithms for fast computation of pseudo Zernike moments and their numerical stability
Digital Signal Processing
Accurate calculation of Zernike moments
Information Sciences: an International Journal
Recognition of offline handwritten numerals using an ensemble of MLPs combined by Adaboost
Proceedings of the 4th International Workshop on Multilingual OCR
Error Analysis in the Computation of Orthogonal Rotation Invariant Moments
Journal of Mathematical Imaging and Vision
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Accuracy, speed and numerical stability are among the major factors restricting the use of Zernike moments (ZMs) in numerous commercial applications where they are a tool of significant utility. Often these factors are conflicting in nature. The direct formulation of ZMs is prone to numerical integration error while in the recent past many fast algorithms are developed for its computation. On the other hand, the relationship between geometric moments (GMs) and ZMs reduces numerical integration error but it is observed to be computation intensive. We propose fast algorithms for both the formulations. In the proposed method, the order of time complexity for GMs-to-ZMs formulation is reduced and further enhancement in speed is achieved by using quasi-symmetry property of GMs. The existing q-recursive method for direct formulation is further modified by incorporating the recursive steps for the computation of trigonometric functions. We also observe that q-recursive method provides numerical stability caused by finite precision arithmetic at high orders of moment which is hitherto not reported in the literature. Experimental results on images of different sizes support our claim.