Rank: 400 based on 244 downloads (last 30 days) and 8 files submitted
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Varuna De Silva

E-mail
Company/University
University of Surrey

Personal Profile:

I received the B.Sc. Engineering degree (First class) in Electronic and Telecommunications Engineering from the University of Moratuwa, Sri Lanka in 2007. In 2011, I completed my Ph.D at University of Surrey, in the UK,supported by the Overseas Research Scholarships Award (ORSAS) of the Higher Education Funding Council of England to pursue his PhD. I am the recipient of the 2009 IEEE "Chester W. Sall Award" for the 2nd best transaction paper in IEEE Transactions on Consumer Electronics. I am also the recipient of the Vice Chancellors Award for the Postgraduate Research Student of the year 2011 of the Faculty of Engineering and Physical Sciences at the University of Surrey. Currently I am working on 3D and multiview video processing, coding, transmission and 3D QoE related issues and have more than 25 publications on these areas. Currently I am a Post-doctoral Research Fellow at University of Surrey, UK.

Professional Interests:
Signal Processing, Video Coding, Image Processing

 

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Files Posted by Varuna View all
Updated   File Tags Downloads
(last 30 days)
Comments Rating
05 Jun 2013 Screenshot Stereoscopic Structural Distortion Metric (StSD) Low complexity objective measurement of compression artifacts in stereoscopic 3D video Author: Varuna De Silva video quality, 3d, stereoscopic video, compression artifacts 14 0
15 Feb 2012 Screenshot Fit Logistic Curve to a Data Set This is a Matlab GUI, that will try to fit a logistic function to a given set of data. Author: Varuna De Silva logistic fuction, curve fitting 23 8
  • 5.0
5.0 | 1 rating
25 May 2011 Screenshot Finding Dominant Peaks and Valleys of an Image Histogram This function finds dominant peaks and local valleys of an image histogram Author: Varuna De Silva histograms, finding peaks, local peaks and minim..., image processing 38 1
  • 3.66667
3.7 | 3 ratings
09 May 2011 Screenshot Logistic Curve Fitting This is a Matlab GUI to fit a given data set with a Logistic Function Author: Varuna De Silva curve fitting, logistic function, itu bt500 13 0
09 Aug 2010 Align Depth images with Corresponding Color Images This program aligns depth maps with their color images for Image Based rendering applications Author: Varuna De Silva image based rendering, 3d video, depth maps, depth image based ren..., dibr 26 0
  • 5.0
5.0 | 1 rating
Comments and Ratings by Varuna View all
Updated File Comments Rating
13 Jun 2012 greedy algorithm in OFDM resource allocation (single user) the implemention of greedy algorithm in mex file Author: Hamid Ramezani

Thanks Hamid, this code is very helpful as a starting point.

However, I have a doubt in your calculation of individual channel SNR's after SC allocation.

In the program channel SNR = Pt / CSI^2, for fourth image.

however, shouldn't it be SNR = Pt*CSI^2/ variance of AWGN ?

15 Feb 2012 Fit Logistic Curve to a Data Set This is a Matlab GUI, that will try to fit a logistic function to a given set of data. Author: Varuna De Silva

Dear Rita and Michael,

Please check to see if your problem is solved in this new version.

Hopefully it is right this time.

BR, Varuna

15 Jul 2011 Fit Logistic Curve to a Data Set This is a Matlab GUI, that will try to fit a logistic function to a given set of data. Author: Varuna De Silva

Hello Rita,

Yes, I tried your data, and it seems in the CC estimation it divides by zero. I couldnt find a quick way out. I will do so and return later

02 Jun 2010 Depth Image Based Stereoscopic View Rendering This program accepts a color and a depth video and converts them to stereoscopic views Author: Varuna De Silva

Hi Jason,

The Ghost artifacts are due to the imperfections of the depth maps. The depth maps may not necessarily align with the color image edges.

Further, such artifacts are due to the hole filling problems that are inherent with DIBR systems. However you may reduce the disparity so that you have less holes.

Thanks for your inquiry.

11 May 2010 Depth Image Based Stereoscopic View Rendering This program accepts a color and a depth video and converts them to stereoscopic views Author: Varuna De Silva

The program should be working fine now.

Comments and Ratings on Varuna's Files View all
Updated File Comment by Comments Rating
04 Jul 2014 Fit Logistic Curve to a Data Set This is a Matlab GUI, that will try to fit a logistic function to a given set of data. Author: Varuna De Silva Gunaputi, Aishwarya

Sir, I got these errors after running this code. Can u please tell how to solve this problem.

??? Error using ==> feval
Undefined function or method 'Logistic_OpeningFcn' for input arguments of type 'struct'.

Error in ==> gui_mainfcn at 221
feval(gui_State.gui_OpeningFcn, gui_hFigure, [], guidata(gui_hFigure), varargin{:});

Error in ==> Logistic at 31
gui_mainfcn(gui_State, varargin{:});

26 Jun 2014 Depth Image Based Rendering Improved version of the previous submission Author: Varuna De Silva Cristiano

Hi, thanks for the code. I have left view and its relative depth map. I want to generate just the right view in correct position respect to the left one. How do I modify your code? Thank you.

28 Mar 2014 Depth Image Based Stereoscopic View Rendering This program accepts a color and a depth video and converts them to stereoscopic views Author: Varuna De Silva Ashwinkarthik

Hello,

I have a depth map which is not in the YUV format.How do I make it compatible with this code ?

Thanks,
Ashwin

10 Oct 2013 Depth Image Based Stereoscopic View Rendering This program accepts a color and a depth video and converts them to stereoscopic views Author: Varuna De Silva elaine

03 Jul 2013 Finding Dominant Peaks and Valleys of an Image Histogram This function finds dominant peaks and local valleys of an image histogram Author: Varuna De Silva Wajahat

Great. After a little tuning, (using smooth(hist)), produces superb results and nicely finds peaks in the histogram.

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