Ayesha

Actif depuis 2014

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Ideal two dimensional step function
I am currently implementing a 5x5 kernel suing the following ideal two-dimensional step function: <</matlabcentral/answers/u...

plus de 10 ans il y a | 1 réponse | 0

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Question

blurring an image by creating a kernel
Hello, I have an image which I need to blur by creating a filter explicitly but I seem to forget the basic math behind deblur...

environ 11 ans il y a | 1 réponse | 0

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Question

Image division into blocks
Hello, I have a code that divides an image into 16x16 blocks. This works really well. However the content of the 16x16 block ...

environ 11 ans il y a | 2 réponses | 0

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réponses

Question

Error vector used in vector quantization
Hello, I was going through existing vector quantization algorithms and I stumbled upon Kekre's Error Vector Rotation algorith...

plus de 11 ans il y a | 1 réponse | 0

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Question

Size of the array after Huffman Encoding
Hello, I have observed that the size of the array generally increasing after huffman encoding process in MATLAB. For example:...

plus de 11 ans il y a | 1 réponse | 0

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Question

Index exceeding array during data transmission
Hello, I'm transmitting data through channel which is simulated in matlab. The data goes through source and channel coding. T...

plus de 11 ans il y a | 1 réponse | 0

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Question

Image reconstruction after applying dwt
I have applied dwt2 on 2D image, applied source and channel coding on LL sub band and transmitted it. Now I have a question ...

plus de 11 ans il y a | 1 réponse | 0

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Question

Combining image after diving it into blocks
Hello, I applied dwt on 500x500 image and split LL which is 254x254 into 16x16 block. Here's the code snippet which explains ...

plus de 11 ans il y a | 1 réponse | 0

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Question

storing values of iteration in loop with varying rows and columns
I'm having a for loop where operation is being performed on every image block. This image block has varying rows and columns at ...

plus de 11 ans il y a | 1 réponse | 0

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Question

Difference between huffman decoding for image matrix and vector
Hello, I've been wondering about the basic difference related to the the role of huffman decoding algorithm between an image ...

plus de 11 ans il y a | 1 réponse | 0

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Question

Storing values in cell instead of struct
Hello, So I've been wondering about an alternate way to store a whole bundle of information as double instead of struct. This...

plus de 11 ans il y a | 1 réponse | 0

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réponse

Question

Read brightness level of the video
Hello, I have been wondering about it and tried searching for software that could basically give me the maximum brightness va...

plus de 11 ans il y a | 1 réponse | 0

1

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Question

avi video from image error
Hello, Here, I'm trying to convert image frames to video. The image frames are contained in the folder 'folder_1'. Whenever I...

plus de 11 ans il y a | 1 réponse | 0

1

réponse

Question

Error in plot code
The code is very simple where I have to plot the denoising error as a function of mu. how ever I am getting error at ...

plus de 11 ans il y a | 1 réponse | 0

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Question

Norm of a vector
Hi, I would like to ask if there is any simple way of calculating norm of vector rather than using built-in function norm?

plus de 11 ans il y a | 1 réponse | 0

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réponse

Question

Analyze frequency spectrum on Matlab
Link ( <http://oi58.tinypic.com/20hwocw.jpg> ) shows the time and frequency spectrum of 1D signal. I just wanted to interpret th...

plus de 11 ans il y a | 1 réponse | 0

1

réponse

Question

Rewriting a loop construct
Just a thought guys, how would you rewrite this loop construct? if i < 4 subplot(4,1,i+1); plo...

plus de 11 ans il y a | 1 réponse | 0

1

réponse

Question

How to stretch a 1-D signal over the axes
I basically want to compare the original signal with the output signal which has been shortened and hence I want to observe it a...

plus de 11 ans il y a | 2 réponses | 0

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réponses

Question

Code about getting different features from the image
Hello everyone, I have attached an image which is basically the output of my code. It performs in the same way as dwt2 functi...

plus de 11 ans il y a | 1 réponse | 0

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Question

Matlab not recognizing the file within directory
I've had this issue once and this is the second time. When I'm running a file whose path has already been set and all the releva...

presque 12 ans il y a | 1 réponse | 0

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Question

Reduction of code lines
Alright, so I've written this particular thing to blur an image and I've been wondering if I could reduce the number of lines or...

presque 12 ans il y a | 2 réponses | 0

2

réponses

Question

Reduce the steps within this code
Hi there! I've been wondering of a way to cut down the steps of sorting the transform and thresholding which constructs an im...

presque 12 ans il y a | 1 réponse | 0

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Question

Reconstructing the image from specific number of coefficicents
Hi there! Alright, so I've been working on this little piece of code to construct an image using specific coefficicents and t...

presque 12 ans il y a | 1 réponse | 0

1

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Question

White Gaussian Noise and threshold
Hello there, I have the SNR values and the corresponding threshold values. Now, I'm wondering how I could optimize the thresh...

presque 12 ans il y a | 1 réponse | 0

1

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Question

Wavelet and image processing
Hi there! Alright, so I've been working on this little piece of code to approximate image using wavelets and there's this err...

presque 12 ans il y a | 1 réponse | 0

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réponse