UJJWAL
INRIA, Sophia Antipolis
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I am a PhD student at INRIA, Sophia Antipolis, France.
Professional Interests: Signal Processing, Digital Communications, Wavelets, Image Processing and Pattern Recognition
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Question
Image Processing Noise differences
Hi, Suppose I want to add white gaussian noise to an image. I propose to do by following means :- a) imnoise(I,'ga...
meer dan 6 jaar ago | 4 answers | 0
4
answersConfused about Karhunen-Loeve Transform
Ok.... Let me put it down one by one... Karhunen Loeve Transform relies on the covariance matrix of a set of observation vect...
bijna 9 jaar ago | 2
| accepted
Question
Extracting image patch within an oriented bounding box of MSER
I have a number of MSER regions obtained in an image. I have parameters of its bounding ellipse. I want to find out the image f...
bijna 9 jaar ago | 0 answers | 0
0
answersQuestion
What is the fastest way of ignoring MSER responses within a mask ?
Hello, For a given image IM, the MSER regions can be obtained by using detectMSERFeatures function. Now Suppose, there is a ...
bijna 9 jaar ago | 0 answers | 0
0
answersFeature Extraction & Selection from a standard Face Image.
Your question is not very clear. What do you want to do with the face images? Is it a detection problem or recognition problem. ...
bijna 11 jaar ago | 0
write command for wavelet packet tree does not seem to work
I was able to solve this problem through debugging the internals of the write function. I found that the write function is recur...
bijna 11 jaar ago | 0
| accepted
To separate a set of data into two groups
You need to mention whether you want data to be divided randomly or is there a certain sequence or rule following which you want...
bijna 11 jaar ago | 0
| accepted
For loop or if condition?
First of all, this is not a correctly asked question. Put your code in a correct format and be of a more explanatory nature. ...
bijna 11 jaar ago | 0
| accepted
Question
write command for wavelet packet tree does not seem to work
Hi, I am trying to create an empty wavelet packet tree and filling up its terminal nodes with coefficients. In short followin...
bijna 11 jaar ago | 1 answer | 0
1
answerhow to add constant noise in image in matlab function?
There is nothing like a constant noise. If you are willing to add noise with constant statistics, you might want to explore the ...
meer dan 11 jaar ago | 0
Segmenting a low contrast image
@Kittu Please ask the question in a clear language that makes sense to all. I understand that you want to do some kind of se...
meer dan 11 jaar ago | 0
Matlab imshow() not showing the image properly
I would really request you to post the image file so that others could also try it.
meer dan 11 jaar ago | 0
CAN I GET A CODE FOR AUTOMATIC THRESHOLDING OF IMAGES
Try Otsu's method
meer dan 12 jaar ago | 0
calculating the intensity
It is not a problem which is simple. It is a complicated problem of biomedical image processing. I would not comment over the so...
meer dan 12 jaar ago | 0
Matlab curve fitting toolbox
You want to do it programmatically and it can be done but being a new user you may find it a bit difficult. There is a curve fit...
meer dan 12 jaar ago | 0
Specify one dimension as variable size in Matlab Coder
Hi, Although i did not understand your question very well but this is i think is your question :- If you want to create a ...
meer dan 12 jaar ago | 0
Analysis
No . There are no general ways (like inbuilt functions) to compare the performance of algorithms.
meer dan 12 jaar ago | 0
| accepted
Trouble with LL in DWT2
Hi, Jagdeesh, Ok. Now I understand. Previously i was thinking that maybe you are referring to the idwt image of the toolbox. ...
meer dan 12 jaar ago | 0
Convert an image to a matrix and convert to gry scale?
hi, It is so simple. Probably you should refer to the technical support documentations online. Btw the simple answers ar...
meer dan 12 jaar ago | 0
| accepted
Trouble with LL in DWT2
Hi, The problem is with your understanding of the Wavelet Theory. The yy which you are showing is basically the approximatio...
meer dan 12 jaar ago | 0
Image processing problem
Before imshow(y); enter this statement y = uint8(y); Now you will get the correct result. This is because x is of t...
meer dan 12 jaar ago | 1
Help using For and IF loop
I thought it can be done without using a loop. Maybe I could not understand your question properly because you did not elaborate...
meer dan 12 jaar ago | 0
Solution of System of Two First-Order Differential Equation
Go and Look for DSolve in MATLAB Documentation. It will make it clear. In case you still have problems , come back ans ask again...
meer dan 12 jaar ago | 0
| accepted
looking for an explicit answer to my integral
Hi Amir , To solve the integral of a sin(1-1/x), follow the following steps, a) Expand sin(1-1/x) and then integrate. b) ...
meer dan 12 jaar ago | 0
looking for an explicit answer to my integral
The explicit closed form answer exists. It is following , a * (cos(1)*ci(1/x) + sin(1)*si(1/x)+x*sin(1)*cos(1/x)-x*cos(1)*si...
meer dan 12 jaar ago | 0
detecting the corners
MATLAB supports two standard methods for corner detection. Harris and MinimumEigenvalue ?? What method are you using ?? I ...
meer dan 12 jaar ago | 0
need syntax
Hi, Since you mentioned that you just have to add the cyclic prefix, I am writing a code to add the cyclic prefix. The code can...
meer dan 12 jaar ago | 0
| accepted
Signal Processing
Hi, I don't know still exactly how I can help u as the whole GUI thing and all is difficult to post in one answer here. For...
meer dan 12 jaar ago | 1
| accepted
LMS algorithm
Hi, Here is a thought. Suppose the noisy image is im_noisy.jpg. Initially apply a suitable filter or denoising method to den...
meer dan 12 jaar ago | 0
Problem in using IDWT2
The input image is of the type Unsigned Integer of 8 bits (uint8). The output image y is of the type double. So due to the di...
meer dan 12 jaar ago | 0
| accepted