Rank: 908 based on 151 downloads (last 30 days) and 6 files submitted
photo

Alexander Wallar

E-mail
Company/University
American International School of Bucharest

Personal Profile:

I am from the United States. I am 16 years old and attend the American International School of Bucharest. I am fairly new to MATLAB but I understand it well.

Add me at facebook.com/wallars


 

Watch this Author's files

 

Files Posted by Alexander Wallar View all
Updated   File Tags Downloads
(last 30 days)
Comments Rating
07 Oct 2011 Picture Transformation Finder This function finds the transformation matrix of two images. Author: Alexander Wallar computer vision, parallel computation, parallel, computation, computer, vision 15 1
25 Jul 2011 cellSearch This function returns the position in a cell of an element in which you are looking for. Author: Alexander Wallar cell, array, data, search, find 10 7
  • 4.0
4.0 | 1 rating
20 Jul 2011 dnaTranslate This function translates DNA nucleotides into Amino Acids Author: Alexander Wallar bio, biology, biotech, bioinformatics, dna, dna translation 12 0
17 Feb 2011 Picture Encryption and Decryption This algorithm decrypts and encrypts images based on keys Author: Alexander Wallar picture, encryption, decryption, image encryption, image decryption, keys 96 8
  • 4.5
4.5 | 4 ratings
18 Jan 2011 Improved Base Expansion Algorithm This is an improvement of my last base expansion algorithm Author: Alexander Wallar base, expansion, algorithm, number theory, cryptography, binary 10 0
Comments and Ratings by Alexander Wallar View all
Updated File Comments Rating
29 Mar 2012 Kinect Matlab Microsoft Kinect, OpenNI wrapper, Skeleton, Depth Author: Dirk-Jan Kroon

Hey I keep on getting this error:

??? Error using ==> mxNiSkeleton
No User Node in Kinect Context

Error in ==> ExampleSK at 12
Pos= mxNiSkeleton(KinectHandles);

Any help please?

29 Mar 2012 Kinect Microsoft SDK Video, Audio, Depth Stream and Skeleton tracking Author: Dirk-Jan Kroon

Some great code. Does it work on MATLAB 2010a?

28 Oct 2011 Picture Encryption and Decryption This algorithm decrypts and encrypts images based on keys Author: Alexander Wallar

Hey, The base expansion algorithm is on my MATLAB page. Here is the link:
http://www.mathworks.com/matlabcentral/fileexchange/30035-improved-base-expansion-algorithm/content/baseVecExpand.m

This picture encryption algorithm isn't really that good. I am saying that because I wrote it and I figured out a fallacy in my logic. By using this key system, if somebody intercepting the information already knows the formula for the decryption, their odds at breaking the code increases BECAUSE of the base key system. On the other hand, if the interceptors do not have the formula, the base key system works. This algorithm does not obey a Nash Equilibrium sense of cryptography because there IS a best case scenario for the interceptors.

I will post a new image encryption algorithm involving bases that will work without this fallacy soon.

-Alex

25 Jul 2011 cellSearch This function returns the position in a cell of an element in which you are looking for. Author: Alexander Wallar

Thank You very much. I have just submitted the updated file. Just one question. What is a A H1 line?

24 Jul 2011 cellSearch This function returns the position in a cell of an element in which you are looking for. Author: Alexander Wallar

That sucks. Repost it if you can.

Comments and Ratings on Alexander Wallar's Files View all
Updated File Comment by Comments Rating
03 Aug 2014 Picture Encryption and Decryption This algorithm decrypts and encrypts images based on keys Author: Alexander Wallar Jey Varshini Vijaya Pandian

Please can you mail me the matlab code for image encryption and decryption

10 Jan 2014 Picture Encryption and Decryption This algorithm decrypts and encrypts images based on keys Author: Alexander Wallar Amani

hi sir Alexander
i want matlab code of encryption and decryption picture send it to me on my mail please
ma7ny@yahoo.com
regards

09 Jan 2014 Picture Encryption and Decryption This algorithm decrypts and encrypts images based on keys Author: Alexander Wallar wiam

06 Dec 2013 Picture Transformation Finder This function finds the transformation matrix of two images. Author: Alexander Wallar Janez Podobnik

It always returns (even if you input same image as pic1 and pic2):

Undefined variable points2.

Error in picTransformation (line 56)
pts2 = points2{2};

31 Jul 2013 Picture Encryption and Decryption This algorithm decrypts and encrypts images based on keys Author: Alexander Wallar chetan sagarnal

Sir i want matlab code of this project. please can u mail me to chetan.sagarnal@gmail.com

Contact us