UJJWAL

INRIA, Sophia Antipolis

自 2011 起处于活动状态

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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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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...

6 years 前 | 4 个回答 | 0

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Confused 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...

9 years 前 | 2

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提问

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...

9 years 前 | 0 个回答 | 0

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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 ...

9 years 前 | 0 个回答 | 0

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Feature 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. ...

11 years 前 | 0

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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...

11 years 前 | 0

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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...

11 years 前 | 0

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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. ...

11 years 前 | 0

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提问

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...

11 years 前 | 1 个回答 | 0

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how 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 ...

12 years 前 | 0

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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...

12 years 前 | 0

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Matlab imshow() not showing the image properly
I would really request you to post the image file so that others could also try it.

12 years 前 | 0

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CAN I GET A CODE FOR AUTOMATIC THRESHOLDING OF IMAGES
Try Otsu's method

12 years 前 | 0

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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...

12 years 前 | 0

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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...

12 years 前 | 0

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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 ...

12 years 前 | 0

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Analysis
No . There are no general ways (like inbuilt functions) to compare the performance of algorithms.

12 years 前 | 0

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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. ...

12 years 前 | 0

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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...

12 years 前 | 0

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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...

12 years 前 | 0

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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...

12 years 前 | 1

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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...

12 years 前 | 0

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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...

12 years 前 | 0

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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) ...

12 years 前 | 0

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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...

12 years 前 | 0

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detecting the corners
MATLAB supports two standard methods for corner detection. Harris and MinimumEigenvalue ?? What method are you using ?? I ...

12 years 前 | 0

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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...

12 years 前 | 0

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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...

12 years 前 | 1

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已回答
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...

12 years 前 | 0

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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...

12 years 前 | 0

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