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Discussion Groups | Image Signal Processing
Technical Discussions related to Image Processing (image coding, compression, digital effects, mpeg, etc)
Mpeg4 Scalable coding
luok...@yahoo.com.sg - Jun 10 2008
Are there any articles on how mpeg4 does scalable coding?
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... 
curvelet transform
sumi...@gmail.com - Jun 9 2008
i have started working on image denoising using curvelet transform.if i run the demo program in curvelab toolbox on image processing it shows an error.the error occurs while taking... Why Gaussian Models ?
fido...@gmail.com - Jun 6 2008
Hi All,
I might be asking trivial question,but i am forced to ask. I need to know why is it most of the application in signals processing and image processing use Gaussian mod... 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... Image contrast enhancement
shan chinna - May 25 2008
Hai,
Am doing contrast enhancement of MR images. Am in need to calculate Detail variance(DV) and background variance(BV) for quality measurement. can any one help me to kno... Real time video compression and wireless transmission [2 Articles]
tony...@yahoo.com - May 7 2008
I'm a student doing a project involving real time video compression and wireless video transmission. Basically I want to take a digital video camera and compress the video in real ... Binar File Header
Khalid Latif - May 5 2008
Hi All,
I want to read a binary video file (generated by MATLAB using
Image & Vidoe Blockset -> sinks -> write binary file) in C.
Its the YUV420 format. But I cant ... MPEG-2 Quantizers
adit...@gmail.com - Apr 3 2008
Hi all,
Can anyone please tell me how many quantizers are used for DCT quantization in MPEG-2?
Thanks a lot.
-Aditya
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... Mjpeg and Jpeg
fido...@gmail.com - Mar 24 2008
Hi All,
I am graduate student working on a project which requires decoding of Mjpeg stream. Further, i am using this decoded output for processing. I am not sure whether i can u... Adaptive block size for H.264
khalid latif - Feb 26 2008
Hi, I am modeling the H.264 in simulink. For block processing,
we pass a fixed block size like 16x16 or 8x8 or 4x4. Can we
pass these parameters in adaptive way like a varia... H.264 Encoder Model in Simulink
khalid latif - Feb 26 2008
Hi, Does any one have the H.264 model in Simulink? I studied the Video Compression demo model available with Video and Image Processing blockset but its a little bit different... Usefull site for image processing in C++ [5 Articles]
belb...@yahoo.com - Feb 16 2008
Hello everyone,
I am having tough time locating some usefull sites for image processing. I am working on a project for color image enhancement. I am using currently, Homomorphic... Document on Sectional Decoding,Sectional based scaling and Sub region Decoding required [2 Articles]
"Raja Shekara S.V" - Jan 21 2008
Hi,
If anybody has any type of information on Sectional Decoding, Sectional based scaling and Sub region Decoding in JPEG please mail to me
If you have .doc or .pdf pleas... edge detection
p_kdl - Jan 15 2008
Hi,
I am learing Image processing. I want to do an edge detection
programme without using the masks (sobel, canny,robert..). So the
point is, given a image, find the g... component analysis in DIP
rama...@gmail.com - Jan 14 2008
can anybody tell me how the implementation of principal component analysis and independent component analysis be made in MATLAB?
and what does the term "Statistical Independence" ... image compression
prathima rao - Jan 2 2008
hi all,
i badly need a souce code in c for dct image compression , can any send it .
thanks in advance
warm regards
prathima
... estimating correlated column noise in an image
Vivek Sharma - Dec 18 2007
Hi All,
I have an image of the format Nx100, where 100 image sensors generate
100 columns of data to create the final image.
I need to estimate the fixed noise (excluding DC... infrared filter
compaq_m2007 - Dec 8 2007
Hi All,
I have an image conatining RGB information. I want to apply an Infrared
effect on to it. Tutorials on how to do that in photoshop are available
on the net. But what ... Jpg decompression with inadequate RAM [2 Articles]
"rosarium.pila" - Dec 7 2007
Hello Friends,
I am developing an application where I have to do Jpeg
decompression. But I don't have enough RAM in my micro controller to
store the jpg image. Neither the c... frequency domain digital image enhancement
mona...@yahoo.co.uk - Nov 29 2007
I am doing a project on the above where I am supposed to develop a DFT based signal processing algorithm that can be used to enhance digital image suffering from variable illuminat... image reconstruction problem using IDCT
bant...@hotmail.com - Nov 18 2007
Hi,
I am trying to apply 8*8blockwiseDCT to raw image and reconstruct it using IDCT. I am completely new to image processing and I am doubtful on the algorithm that I am implem... Optical Flow, Help needed in Matlab [2 Articles]
Soni - Nov 15 2007
Hi All..,
I am working on Face authentication, I am stuck up with optical flow.
I have calculated the velocities of the motion of 2 images in x and y
direction, but how do I g... gaussian mixture models
swami nathan - Nov 7 2007
hi all,
can someone send me informations or codes for using gaussian mixture
models on images
... FVID Planar config in DM6437
Juan Casal - Nov 7 2007
Hi,
I am trying to make the planar configuration of the fvid in DM6437 but the FVID fails on creation. Can anybody help me?.
Thanks
Juan
... regarding image matching [2 Articles]
prathima_rao_rao - Nov 7 2007
Hi All,
I have newly joined the group.
I am working on a project which finds defect in a relay,
we r taking images of the relay in all the directions.
we have a source image ... Block matching in motion estimation
mrofouei84 - Nov 5 2007
Hi everyone,
I need c or c++ code for block matching in different algorithms (like
Exhaustive search, ...) or at least in some. Can anybody send me a link?
Thanks
... Shadow Detection_Shadow Elimination [4 Articles]
shoh...@gmail.com - Oct 29 2007
Dear all
I am estimating the background with LMS(adaptive filters) in a video surveillances, so I have to detect all the motions. The big problem is shadow, I have to Eliminate... adding lines to videos
hey3...@yahoo.com - Oct 22 2007
Hi! how do i add lines when i create an avi file in MATLAB? or how do I include lines in an image without putting it in a figure?
particularly in the function 'addframe' in creati... analog bandwith
parini26 - Oct 15 2007
Hi! does anyone know how to calculate the analog bandwith of a video
stream ? i'm using the image adquisition toolbox and a cctv camera and
i want to know the real bandwith of ... Bandwidth of gray level images
nafi...@gmail.com - Oct 13 2007
What is the effect of quantization(reducing the gray levels) on bandwidth?
does it make it wider or lower?
thanks
... geodesic distances
swamigmv - Oct 8 2007
hi,
do anybody know to calculate the geodesic distance of luminance(or any
other ) in an image.
thanks in advance
... DCT coefficient range
michael toon - Oct 3 2007
What ranges for DCT coefficients should i expect with 8x8 image blocks
where each pel is 8 bits?
thanks,
mike.
... Circular Template Matching for Cell Segmentation [3 Articles]
inder purohit - Oct 3 2007
Hi All,
I am working on Cell Segmentation for the detection of cancer cells. The cells are separated from the background using a threshold. Later form factor is used to s... DCT block size h.264
Sandeep - Sep 26 2007
Can a 16x16 macroblock have blocks of different sizes(some 8x8, some
4x4)??
or is it necessary that all the blocks in a macroblock need to be
either 8x8 blocks or 4x4 blocks??... gabor filter java implementation
ghalamiamin - Sep 10 2007
I have Implemented a 2D gabor filter by java
but it does not work properly Please give me notes about my code
thank you
package fpFrameWork.process.gaborFilter;
import java.... LMS [2 Articles]
bena...@yahoo.fr - Sep 10 2007
I'm working on a LMS algorithm,I need a paper or what ever that explains the applied LMS algorithm to
images,
Could someone please help me?
thinks
faten
... DSP+OpenCV [2 Articles]
univmercury - Sep 10 2007
Hi Euslei,
I am also doing an image processing application on BF533 platform. I
already have written OpenCV codes for this application, but how to
transplant them to the DSP p... 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... Background estimation using LMS algorithm
shoh...@gmail.com - Sep 5 2007
Hello every body
I am estimating the background in a video sequence with LMS algorithm, the speed of estimating is very slow,so I am thinking of using the block set, it means tha... 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...