Prof.Dr.Ashraf Khaled Helmy

Summary :

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Publications :

1-A.k.Helmy, et al “Artificial Neural Network Technique for Detecting Changes in Satellite Images”, “Ain Shams university, Engineering Bulletin vol.34, No.4, pp.471-484, Dec. 1999

2- M.N. Hehazy, B. El-Leithy, A.k. Helmy and M. Kafatos “GIS Modeling of Best Sites for Agricultural Development in South Eastern Desert of EGYPT” AGRO-ENVIRON 2002.

 3- A.k.Helmy, et al., “Fading Effect Reduction in Synthetic Aperture Radar Imagery Using Redundant Discrete Wavelet Transform”, “Ain Shams university, Engineering Bulletin vol. 39, No.2, pp.575-589, 2004.

4‐  A.k.Helmy, et al., “Dual Tree Complex Wavelet Transform for Adaptive Interferogram Residual Reduction”, International Journal of Computer Vision, Graphic and Image Processing, vol. 4, ISSN 1687-398X, May 2005.

5- A. H. Nasr, B. M. El Leithy, and A. K. Helmy “Assessment of Some Water Quality Parameters Using MODIS Data along the Red Sea Coast, Egypt,” ICGST-GVIP Journal, Vol. 7, No. 3, 2007. ISSN: 1687- 3998

6- G.S.El-Taweel and A.K.Helmy "Efficient Iris Recognition Scheme Based on Difference of Filters" Wseas Transaction on Computer Research, Issue 2, Vol. 3, February 2008. ISSN: 1991-8755 7- G.S.El-Taweel and A.K.Helmy ," Supervised Classification Using Gabor Wavelets and Neural Network For Lidar Data" Ain Shams Journal of Civil Engineering , Vol. 2 ,2008. ISSN: 2090-4479.

8- Ashraf. K. Helmy and GH.S.El-Taweel, "Authentication Scheme Based on Principal Component Analysis for Satellite Images" International Journal of Signal Processing, Image Processing and Pattern Recognition, Vol. 2, No.3, September 2009, ISSN: 2005-4270.

 9- A. H. Nasr, and A. K. Helmy "Integration of Misrsat-1 and SPOT-2 Data for Quantitative Change Detection Applications", ICGST-GVIP Journal, Vol. 9, No. v, 2009, , ISSN: 1687-3998.

10- Nasr, A.H., Helmy, A.K. and Mohamed, S.A., (2009): "Exploration of Misrsat-1 Data in Different Change Detection Applications". Proc. of the 5th WSEAS International Conference on Remote Sensing (REMOTE'09), University of Genova, Genova, Italy, pp.39-46 .

11- Ashraf. K. Helmy and G.S.El-Taweel, "Speckle Suppression of Radar Images Using Normalized Convolution", Journal of Computer Science (JCS) Vol. 6, Issue 10, 2010 , ISSN: 1549-3636© Science Publications.

12- A.K. Helmy and Gh.S. El-Taweel, "Neural Network Change Detection Model for Satellite Images Using Textural and Spectral Characteristics ", American J. of Engineering and Applied Sciences (AJEAS), Vol.3, Issue 4, pp. 604-610, 2010 ISSN: 1941-7020© Science Publications.

13- Ashraf. K. Helmy ,Ayman Nasr and G.S.El-Taweel, " Assessment and Evaluation of Different Data Fusion Techniques", International Journal of Computer (IJC), Vol. 4, Issue 4,2010, ISSN: 1998-4308.

14- G.S.El-Taweel and Ashraf. K. Helmy, "Interferogram Filtering Using Gaussians Scale Mixtures", International Journal of Image Processing Vol.4, Issue 4, 2010, ISSN: 1985-2304

15- Nasr, A.H. and Helmy, A.K., (2011): "Egyptsat-1 SuperResolution Image Reconstruction Using Data Fusion". Proc. of the International Joint Urban Remote Sensing Event (JURSE-2011), Technische Universitat Munchen, Munich, Germany, PP. 317-320

16- A.K. Helmy and Gh.S. El-Taweel "Regular gridding and segmentation for microarray images”, Computers and Electrical Engineering, 2013.

17- Gh.S. El-Taweel and A.K. Helmy “Image fusion scheme based on modified dual pulse coupled neural network”, IET on image processing, September 2013, 8 pp., DOI: 10.1049/iet-ipr.2013.0045

18- S.A. Mohamed , A.K. Helmy, M.A. Fkirin and S.M. Badway , “Accuracy Analysis of Phase Correlation Shift Measurement Methods Applied to Egyptsat-1 Satellite”, In proceeding of: Radio Science Conference (NRSC), 2013 30th National, DOI: 10.1109/NRSC.2013.6587933.

19- Marwa Moustafa, Hala M. Ebied, Ashraf Helmy and M.F. Tolba, “Analysis of Shift Estimation Techniques of SuperResolution Applied to Satellite Images”, The 8th International Conference on Computer Engineering & Systems (ICCES'13), pp. 233-238; 11/2013

20- S.A. Mohamed , A.K. Helmy, M.A. Fkirin and S.M. Badway ,“ Proposed Method to Measure Sub Pixel Shift in Egyptsat-1 Aliased Images”, International Journal of Computer Applications (0975 – 8887) Volume 95– No. 10, June 2014