Author image not provided
 Ekta Walia

Add personal information
  Affiliation history
Bibliometrics: publication history
Average citations per article3.93
Citation Count55
Publication count14
Publication years2006-2017
Available for download1
Average downloads per article236.00
Downloads (cumulative)236
Downloads (12 Months)236
Downloads (6 Weeks)14
Arrow RightAuthor only

See all colleagues of this author

See all subject areas


14 results found Export Results: bibtexendnoteacmrefcsv

Result 1 – 14 of 14
Sort by:

February 2017 Machine Vision and Applications: Volume 28 Issue 1-2, February 2017
Publisher: Springer-Verlag New York, Inc.
Citation Count: 0

Archaeologists are currently producing huge numbers of digitized photographs to record and preserve artefact finds. These images are used to identify and categorize artefacts and reason about connections between artefacts and perform outreach to the public. However, finding specific types of images within collections remains a major challenge. Often, the ...
Keywords: Archaeology, Image retrieval, Artifacts, Biface, Flint, Image-based search

2 published by ACM
January 2017 Journal on Computing and Cultural Heritage (JOCCH) - Special Issue on Digital Infrastructure for Cultural Heritage, Part 1: Volume 10 Issue 1, April 2017
Publisher: ACM
Citation Count: 0
Downloads (6 Weeks): 14,   Downloads (12 Months): 236,   Downloads (Overall): 236

Full text available: PDFPDF
Traditionally, the preservation of archaeological data has been limited by the cost of materials and the physical space required to store them, but for the last 20 years, increasing amounts of digital data have been generated and stored online. New techniques in digital photography and document scanning have dramatically increased ...
Keywords: content-based image retrieval, instrumental interaction, texture description, user-centred design, exploratory search and discovery, archaeological information, feature fusion, Archival search

August 2014 Journal of Visual Communication and Image Representation: Volume 25 Issue 6, August, 2014
Publisher: Academic Press, Inc.
Citation Count: 9

This paper presents a novel framework for color image retrieval through combination of all the low level features, which gives higher retrieval accuracy. The Color Difference Histogram (CDH) and Angular Radial Transform (ART) features are exploited to capture color, texture and shape information of an image. The CDH algorithm is ...
Keywords: Fusion, Z-score normalization, Content based image retrieval, Min-max normalization, Angular Radial Transform, Borda Count, Color Difference Histogram, Lab color space

April 2014 International Journal of Computer Vision and Image Processing: Volume 4 Issue 2, April 2014
Publisher: IGI Global
Citation Count: 0

Although mobile devices have now become an important computing platform, however most of them still lack hardware accelerated graphics. Therefore, interactive 3D rendering on these devices is a difficult task. This paper describes different approaches for 3D rendering on mobile devices and the associated challenges. It then investigates different solutions ...
Keywords: JavaME, Phong Shading, 3D Image Warping, Image Based Rendering, Interactive 3D Rendering on Mobile Devices

January 2014 International Journal of Computer Vision and Image Processing: Volume 4 Issue 1, January 2014
Publisher: IGI Global
Citation Count: 0

Digital Watermarking allows an individual to add some hidden copyright notices or other verification messages to digital media, where message is a group of bits describing the information pertaining to the signal or its author. For this purpose, two techniques viz. global watermarking and local watermarking can be used. In ...
Keywords: Global Watermarking, Local Watermarking, Feature Based Watermarking, Zernike Moments, Geometric Attacks, Photometric Attacks

June 2013 Information Sciences: an International Journal: Volume 233, June, 2013
Publisher: Elsevier Science Inc.
Citation Count: 9

Zernike moments (ZMs) are very effective global image descriptors which are used in many digital image processing applications. The digitization process compromises the accuracy of the moments and therefore, several of its properties are affected. There are two major discretization errors, namely, the geometric error and numerical integration error. In ...
Keywords: Image reconstruction, Moment invariants, Numerical integration error, Zernike moments, Geometric moments

December 2012 Pattern Recognition Letters: Volume 33 Issue 16, December, 2012
Publisher: Elsevier Science Inc.
Citation Count: 0

The aim of the present comment is to point out wrong claim made by (Hosny, 2010) on the exact computation of radial moments. These errors are corrected in the comment. It is shown that the correct values of radial moments can be computed from numerical integration as exact computation of ...
Keywords: Geometric moments, Radial moments, Radial geometric moments

December 2012 Digital Signal Processing: Volume 22 Issue 6, December, 2012
Publisher: Academic Press, Inc.
Citation Count: 5

This paper aims at analyzing the performance of various fast methods for the computation of pseudo Zernike moments (PZMs) with respect to their time complexity and numerical stability. Based on these different types of existing methods, four new methods are also proposed. A computational framework is provided which integrates the ...
Keywords: Coefficient methods, Numerical stability, Pseudo Zernike moments, Recursive methods

April 2012 International Journal of Computer Vision and Image Processing: Volume 2 Issue 2, April 2012
Publisher: IGI Global
Citation Count: 0

Usually magnitude coefficients of some selected orders of ZMs and PZMs have been used as invariant image features. The careful selection of the set of features, with higher discrimination competence, may increase the recognition performance. In this paper, the authors have used a statistical method to estimate the discrimination strength ...
Keywords: Principal Component Analysis PCA, Zernike Moments ZMs, Pseudo Zernike Moments PZMs, Fisher Linear Discriminant FLD Analysis, Invariant Features

March 2011 Pattern Recognition and Image Analysis: Volume 21 Issue 1, March 2011
Publisher: Springer-Verlag New York, Inc.
Citation Count: 8

Selection of a good feature extraction method is the most important factor in achieving the higher recognition rate in face recognition. This paper presents the analysis of two moment based feature extraction methods namely Zernike moments (ZMs) and Complex Zernike moments (CZMs) in application to face image recognition. We have ...
Keywords: complex zernike moments, moments, zernike moments, face recognition, invariance

March 2011 Image and Vision Computing: Volume 29 Issue 4, March, 2011
Publisher: Butterworth-Heinemann
Citation Count: 8

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 ...
Keywords: Fast computation, Zernike moments, Geometric moments, Quasi-symmetry, Numerical stability

July 2010 Pattern Recognition: Volume 43 Issue 7, July, 2010
Publisher: Elsevier Science Inc.
Citation Count: 10

Zernike moments (ZMs) are used in many image processing applications due to their superior performance over other moments. However, they suffer from high computation cost and numerical instability at high order of moments. In the past many recursive methods have been developed to improve their speed performance and considerable success ...
Keywords: Fast computation, Zernike moments, Accuracy, Numerical stability

May 2008 CISP '08: Proceedings of the 2008 Congress on Image and Signal Processing, Vol. 1 - Volume 01
Publisher: IEEE Computer Society
Citation Count: 4

The Principal Component Analysis (PCA) is one of the most successful techniques that have been used to recognize faces in images. However, high computational cost and dimensionality is a major problem of this technique. There is evidence that PCA can outperform over many other techniques when the size of the ...
Keywords: Face Recognition, Fuzzy Feature Extraction, Eigenface, Principle Component Analysis

July 2006 GMAI '06: Proceedings of the conference on Geometric Modeling and Imaging: New Trends
Publisher: IEEE Computer Society
Citation Count: 1

Many research papers indicate the use of various linear and non-linear interpolation techniques for the shading of three-dimensional objects. This paper presents a comparative study of the linear and non-linear interpolation techniques for the shading of threedimensional objects. It presents an analysis of different linear and non-linear interpolation techniques with ...

The ACM Digital Library is published by the Association for Computing Machinery. Copyright © 2018 ACM, Inc.
Terms of Usage   Privacy Policy   Code of Ethics   Contact Us