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Technical Discussions related to Image Processing (image coding, compression, digital effects, mpeg, etc)
Search Results for "wavelet"
HELP for 2-D wavelet transform [3 Articles]
pat_debasish - Dec 2 2005
hello,
i am working on image fusion and i am using neural network and
wavelet transforms method for this. i have lot basic doubts about 2-D
wavelet transform
of images... 
2d Discrete Wavelet Transform
"bal...@ymail.com" - Dec 29 2009
I want to do feature extraction on a image using wavelet transform(in JAVA). Can anyone give me the algorithm or the method to do this? Is there any book that can help me?
... Embedded Zero Wavelet Tree hdl implementation
deosiddharth - Mar 14 2005
hi everyone,
Anyone worked on or is working on image compression using EZW(embedded
zero wavelet tree).
I am trying to implement it using hdl
regards ... Overcomplete wavelets for image denoising
Patrick Mineault - Aug 8 2007
Hi all,
I'm looking to do denoising on a set of non-natural images; these
images come from experiments in visual research. As it turns out, to
find out the truly important com... Wavelet doubt [3 Articles]
sowmya - Jun 11 2002
Hello,
I'm very new to this wavelet field..
Can anybody tell how the convolution is done in wavelets ..
B'coz in matlab there is a dire... How to calculate the Compression ratio of Wavelet transformed image??
Yeasin Razib - Sep 7 2007
Hi,
I'm working with image compression with wavelet transform using different types of wavelets in MATLAB.I did multi-resolution decomposition and reconstructed the image.I've c... Wavelet interpolation [2 Articles]
snehamoyc - Mar 10 2009
Hi,
I am working on image interpolation using wavelet transformation. I am doing one level wavelet transformation of my data and interpolating all 4 sub bands and inverse transfor... Haar Wavelets [2 Articles]
Prakhar Vig - Dec 23 2005
Hi all,
I am new to image processing can anyone explain me hoe to use Haar
wavelet to decompose the images. or tell me some tutorials relevant to
this.
Regards
P... PSNR [2 Articles]
abdul_wasey2 - Jun 20 2010
Hi,
I have two square matrices of different sizes. One is half the size of the other. I got this from db1 wavelet decomposition. Now I want to compute PSNR (peak signal...) betwee... Coding Gain for DWT
- Nov 17 2001
Dear All,
Does any body know how to calculate coding gain for 6-level
decomposition of integer wavelet transform (G6). Matlab m-file will
be highly appreciated... 2D Discrete Wavelet Transform on images
luok...@yahoo.com.sg - May 26 2008
Hi
I am working on scalable coding of images and videos. I do not quite understand how DWT is performed on images (2D DWT). For image compression using Discrete Cosine Transform... Transfrom to Compress High frequency signal in Image [2 Articles]
fido...@gmail.com - Jul 29 2009
Hi All,
I need to compress High frequency signals like edges in an image. I have an image taken from the difference of smoothen and un-smoothen image(all the edges preserved).... how to classify the image feature extraction methods
moh_...@yahoo.com - Jul 8 2010
hi to all of the researcher and who love researching
I'm trying to classify all of the image extraction method's in one big tree.
how we can put the following features extraction... maybe OT: Wavelet and JPEG2000
Mr. Eugenio Ballini - Jun 4 2002
Dear Collegues of the mailing list "imagedsp",
Looking through the home page and the messages of this mailing list, I
have found that many of you are
involved in ... Re: How does one "determine" the point spread function?
Patrick Mineault - Aug 10 2008
Well, the general idea is to assume a model, for example:
J = I * P
Where J is the output image, I is the original (unblurred) image, P is the
point spread function, and * i... Re: MPEG4 related questions
Atanu Guchhiat - Apr 24 2001
hi, this may help you
Necessity of FGS:
The objective of FGS is to get optimized video quality over network at a
given rate. We can get optimized video qual... How do I test MPEG4 bitstream
Deepak Chandra - Apr 27 2001
I'm working on an mpeg4 encoder . To test the output of my encodet i want to
play it . All I could figure out is that I will have to make an AVI file out
of it. Is ...