Rank: 469 based on 140 downloads (last 30 days) and 6 files submitted
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Dimuthu Senanayaka

E-mail
Company/University
University of Moratuwa

Personal Profile:

I am a final year(4th year) Electronics and Telecommunication engineering undergraduate at the university of Moratuwa, Sri Lanka.

Professional Interests:
Image Processing

 

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Files Posted by Dimuthu View all
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(last 30 days)
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06 Oct 2010 Screenshot zooming an image using nearest neighbor interpolation nearest neighbor interpolation is used to zoom an image by any positive real number(any n>0). Author: Dimuthu Senanayaka image processing 13 1
26 Sep 2010 Screenshot finding root of any polynomail using Newton Raphson method finding root of any polynomial using Newton Raphson method Author: Dimuthu Senanayaka mathematics 16 1
26 Sep 2010 Screenshot Simple Radar_system_simulation Simple Radar_system_simulation Author: Dimuthu Senanayaka communications, simulink, simulation, statistics 50 1
  • 3.0
3.0 | 1 rating
26 Sep 2010 finding_ensemble_parameters_of_random_signals_in_a_communication_channel Find ensemble parameters of random signal in a communication channel. Author: Dimuthu Senanayaka communications, statistics, signal processing 2 2
  • 1.0
1.0 | 3 ratings
25 Sep 2010 Screenshot image processing-zooming an image using Bilinear interpolation Bi linear interpolation method has been used here for zooming images by a positive integer factor. Author: Dimuthu Senanayaka image processing, mathematics, matrix, interpolation 39 2
  • 5.0
5.0 | 1 rating
Comments and Ratings by Dimuthu View all
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26 Sep 2010 Fourier Analysis of a Rectangular Pulse Fourier Analysis of the Rectangular pulse... Author: Dimuthu Senanayaka

Thanks J Rey..

26 Sep 2010 finding_ensemble_parameters_of_random_signals_in_a_communication_channel Find ensemble parameters of random signal in a communication channel. Author: Dimuthu Senanayaka
28 Oct 2009 rtc: a pedestrian real-time clock figure creates a versatilely configurable real-time clock in a figure Author: us

nice...sir

22 Oct 2009 Fourier Analysis of a Rectangular Pulse Fourier Analysis of the Rectangular pulse... Author: Dimuthu Senanayaka

Finding the Fourier transform of a rectangular pulse..
filtering the spectrum and regenerating the signal using
the filtered spectrum is done...
at the end Rayleigh theorem is proved by showing that the energy content of both time domain and frequency domain signals are equal..

your comments are required.....

Comments and Ratings on Dimuthu's Files View all
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08 Apr 2011 Simple Radar_system_simulation Simple Radar_system_simulation Author: Dimuthu Senanayaka el attar, mahjoub

Hi Dimuthu Senanayaka

It looks great, wanted to get into that kind of project.
Now with your code this will be easier.

22 Jan 2011 image processing-zooming an image using Bilinear interpolation Bi linear interpolation method has been used here for zooming images by a positive integer factor. Author: Dimuthu Senanayaka Chan, Michael

Hi Dimuthu,

I tested your version with Matlab's. However, this is the result:

Matlab inbuilt
--------------
PSNR (interpolatedImage: bilinear) = +29.00789 dB

Dimuthu's version
-----------------
PSNR (interpolatedImage: bilinear) = +35.77969 dB

Error rate: 23.34466 %

11 Nov 2010 finding root of any polynomail using Newton Raphson method finding root of any polynomial using Newton Raphson method Author: Dimuthu Senanayaka misha

hello there,
i need help in the following topic
write a matlab program for using the newton raphson method
Xk+1 = xk – f(xk)/f’(xk)
for finding the 1 root of the general polynomial
f(x) = a1 + a2x + a3x2 +...+ an-1xn-2 + anxn-1 + an+1xn

06 Oct 2010 zooming an image using nearest neighbor interpolation nearest neighbor interpolation is used to zoom an image by any positive real number(any n>0). Author: Dimuthu Senanayaka Simon, Jan

No help section, no H1 line, no checks of input. The function fails for indexed images.
The processing is performed by nested FOR loops without pre-allocation, such that the efficiency is very very low. Therefore this function is neither useful for real applications nor for education.
Take a look into INTERP2, which performs a dramatically more efficient nearest neighbor interpolation.

27 Sep 2010 image processing-zooming an image using Bilinear interpolation Bi linear interpolation method has been used here for zooming images by a positive integer factor. Author: Dimuthu Senanayaka Amarasinghe, Nethu

Good work Dimuthu!

Top Tags Applied by Dimuthu
communications, image processing, mathematics, statistics, fourier analysis
Files Tagged by Dimuthu View all
Updated   File Tags Downloads
(last 30 days)
Comments Rating
06 Oct 2010 Screenshot zooming an image using nearest neighbor interpolation nearest neighbor interpolation is used to zoom an image by any positive real number(any n>0). Author: Dimuthu Senanayaka image processing 13 1
26 Sep 2010 Screenshot finding root of any polynomail using Newton Raphson method finding root of any polynomial using Newton Raphson method Author: Dimuthu Senanayaka mathematics 16 1
26 Sep 2010 Screenshot Simple Radar_system_simulation Simple Radar_system_simulation Author: Dimuthu Senanayaka communications, simulink, simulation, statistics 50 1
  • 3.0
3.0 | 1 rating
26 Sep 2010 finding_ensemble_parameters_of_random_signals_in_a_communication_channel Find ensemble parameters of random signal in a communication channel. Author: Dimuthu Senanayaka communications, statistics, signal processing 2 2
  • 1.0
1.0 | 3 ratings
25 Sep 2010 Screenshot image processing-zooming an image using Bilinear interpolation Bi linear interpolation method has been used here for zooming images by a positive integer factor. Author: Dimuthu Senanayaka image processing, mathematics, matrix, interpolation 39 2
  • 5.0
5.0 | 1 rating

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