Rank: 72 based on 499 downloads (last 30 days) and 21 files submitted
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Kanchi

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Files Posted by Kanchi View all
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04 Oct 2011 Ant colony optimization for wavelet-based image interpolation Ant colony optimization for wavelet-based image interpolation Author: Kanchi image processing, signal processing, image interpolation, ant colony optimizati... 40 0
04 Oct 2011 Phase-driven spatially-variant regularization for image resolution enhancement A demo code of Phase-driven spatially-variant regularization for image resolution enhancement Author: Kanchi image processing, signal processing, image interpolation 11 0
07 Sep 2011 Image edge detection using variation-adaptive ant colony optimization A demo program of Image edge detection using variation-adaptive ant colony optimization Author: Kanchi ant colony optimizati..., edge detection, signal processing, image processing 38 0
07 Sep 2011 SPIHT SPIHT matlab code (without Arithmatic coding stage) Author: Kanchi compression, spiht wavelet image c... 88 36
  • 4.66667
4.7 | 31 ratings
06 Sep 2011 Image despeckling using a non-parametric statistical model of wavelet coefficients A demo code of Image despeckling using a non-parametric statistical model of wavelet coefficients. Author: Kanchi image processing, signal processing, image denoising, wavelet 15 0
Comments and Ratings on Kanchi's Files View all
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18 Oct 2011 Sawtooth Wave Fourier Series Demo Sawtooth Wave Fourier Series Demo Author: Kanchi memotronik

a probar

13 Oct 2011 Sawtooth Wave Fourier Series Demo Sawtooth Wave Fourier Series Demo Author: Kanchi ece, ee

great

13 Oct 2011 SPIHT SPIHT matlab code (without Arithmatic coding stage) Author: Kanchi L, mangesh

give me matlab code for B2 coding

09 Oct 2011 EZW (Embedded Zerotree Wavelet) Matlab implementation of EZW (Embedded Zerotree Wavelet) Author: Kanchi Stolarek, Jan

Good code, clearly written and well commented but not optimized. After two days of refactoring I've managed to speed it up 2 times.

07 Oct 2011 SPIHT SPIHT matlab code (without Arithmatic coding stage) Author: Kanchi Stolarek, Jan

Very nice code, although it could use some refactoring, e.g. this part in the main demo file:

OrigSize = size(Orig_I, 1);
max_bits = floor(rate * OrigSize^2);
OutSize = OrigSize;
image_spiht = zeros(size(Orig_I));
[nRow, nColumn] = size(Orig_I);
n = size(Orig_I,1);
n_log = log2(n);
level = n_log;

Could be simple rewritten as:

[nRow, nColumn] = size(Orig_I);
max_bits = floor(rate * nRow^2);
level = log2(nRow);

OutSize and image_spiht are never used in fact. Last line assumes silently that dimensions of the image are power of 2 and that there are at least as many columns as rows. Perhaps this would be better:
level = floor( log2( min( [ nRow, nColumn ] ) ) );

Matlab code analyzer complains a lot about variables growing inside the loops. I think that optimizing that could improve performance a lot.

Top Tags Applied by Kanchi
image processing, signal processing, image analysis, demo, image interpolation
Files Tagged by Kanchi View all
Updated   File Tags Downloads
(last 30 days)
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04 Oct 2011 Ant colony optimization for wavelet-based image interpolation Ant colony optimization for wavelet-based image interpolation Author: Kanchi image processing, signal processing, image interpolation, ant colony optimizati... 40 0
04 Oct 2011 Phase-driven spatially-variant regularization for image resolution enhancement A demo code of Phase-driven spatially-variant regularization for image resolution enhancement Author: Kanchi image processing, signal processing, image interpolation 11 0
07 Sep 2011 Image edge detection using variation-adaptive ant colony optimization A demo program of Image edge detection using variation-adaptive ant colony optimization Author: Kanchi ant colony optimizati..., edge detection, signal processing, image processing 38 0
07 Sep 2011 SPIHT SPIHT matlab code (without Arithmatic coding stage) Author: Kanchi compression, spiht wavelet image c... 88 36
  • 4.66667
4.7 | 31 ratings
06 Sep 2011 Image despeckling using a non-parametric statistical model of wavelet coefficients A demo code of Image despeckling using a non-parametric statistical model of wavelet coefficients. Author: Kanchi image processing, signal processing, image denoising, wavelet 15 0

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