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**Content Feed**

Question

please explain size function in MATLAB

if(size(img,3) == 1) disp('Error: Pick a color image'); return;

5 years ago | 1 answer | 0

### 1

answerQuestion

is it possible to substitute multiplication and division by addition and subtraction respectively in MATLAB?

is it possible to substitute multiplication and division by addition and subtraction respectively in MATLAB?

5 years ago | 1 answer | 0

### 1

answerQuestion

Does operating speed of MATLAB depends on hardware?

Will MATLAB work faster on Desktop than Laptop, if both are of same configurations?

6 years ago | 0 answers | 0

### 0

answersQuestion

How can I convert a lena.bmp image to lena.tif?

Is there any function in MATLAB which convert the image type? If i rename the name of the image manually from "lena.bmp" to "len...

6 years ago | 3 answers | 0

### 3

answersQuestion

Is image type show any difference in calculating the time to encrypt or decrypt or encrypt and decrypt the image?

Is image type show any difference in calculating the time to encrypt or decrypt or encrypt and decrypt the image? I am calculat...

6 years ago | 2 answers | 0

### 2

answersQuestion

How to calculate PSNR gain?

I want to calculate averge percentage gain for the PSNR values given in the table *s.no PSNR at column 1 PSNR a column 2* ...

7 years ago | 2 answers | 0

### 2

answersQuestion

Can both PSNR and Compression ratio be good for the same image?

I am using a compression algorithm for a image. Then I am calculating both PSNR and compression ratio of the image. I am gettin...

7 years ago | 1 answer | 0

### 1

answerQuestion

How to know about the co-ordinates of a point in a MATLAB plot

<</matlabcentral/answers/uploaded_files/31521/111.png>> how to know about the value of intersection point . Let it be blue...

7 years ago | 1 answer | 0

### 1

answerQuestion

I am using the inbuilt MATLAB code for a vector, can anyone please tell me how to use the same code for images?

code is at http://in.mathworks.com/help/comm/ug/source-coding.html#fp6485 predictor = [0 1]; % y(k)=x(k-1) partition = [...

7 years ago | 1 answer | 0

### 1

answerQuestion

I want a differential pulse code modulation(DPCM) matlab code for images

how to apply DPCM on images

7 years ago | 1 answer | 0

### 1

answerQuestion

I have few questions regarding string. I have applied Run Length Encoding on a large string. But at the output I am getting some unwanted symbols. why it is so?

function y = estring(str) len = numel(str); %65536 i = 0; count = zeros(1,len); y=[]; while( i<len ) ...

7 years ago | 1 answer | 0

### 1

answerQuestion

how to remove of single quote from a string?

I am having a string s=' ttt'ppPPrrr'; now I want to remove that single quote in between the string

7 years ago | 1 answer | 0

### 1

answerQuestion

can you please tell me how to remove any special characters from a string in MATLAB?

special characters include anything else from alphabets(a-z) and(A-Z)

7 years ago | 1 answer | 0

### 1

answerQuestion

can you please tell me how to apply run length encoding on the dominant pass list of EZW

I am referring this paper. Please help....

7 years ago | 0 answers | 0

### 0

answersQuestion

I am executing the code given at link and getting the error"Error using bitget Double inputs must have integer values in the range of ASSUMEDTYPE."

http://in.mathworks.com/matlabcentral/fileexchange/2818-huffman-coding-and-arithmetic-coding/content//Arith06.m what is going...

7 years ago | 0 answers | 0

### 0

answersQuestion

how can I eliminate space between characters of a string?

e.g. let my string is this t P t P t P t P t P t P t P t P t P t How to convert this string with no white...

7 years ago | 1 answer | 0

### 1

answerQuestion

how to convert bpp(bits per pixel to compression ratio)?

e.g. let bpp is 0.1870....than what will be the compression ratio?

7 years ago | 1 answer | 0

### 1

answerQuestion

hello experts...see I am executing a code....want some suggestions

My code is %script----------------------------------% X= ' PPtPPPPP'; lengh=numel(X); aaAA=estring(X); ...

7 years ago | 1 answer | 0

### 1

answerQuestion

I want to know if I am calculating the results are right?

I have applied run length encoding on a string or characters. Let it be 'ttttttPPttttttPPNNNtttttt' which after Run lengt...

7 years ago | 2 answers | 0

### 2

answersQuestion

How to calculate the PSNR of the complete image

I have applied 1 level DWT on a lena image. After this I have applied image compression technique , separately on each subband(L...

8 years ago | 0 answers | 0

### 0

answersQuestion

calculation of PSNR cetween two images

If I am calculating PSNR of a image then should I use PSNR=psnrtest(Original_image,reconstructed_image) OR Original...

8 years ago | 1 answer | 0

### 1

answerQuestion

I am executing the code below for run length encoding, how to make code for inverse Run Length encoding to get the decompressed image?

my code for RLE is function y = estring(str) len = numel(str); %65536 i = 0; count = zeros(1,len); y=[]; wh...

8 years ago | 0 answers | 0

### 0

answersQuestion

download test images for MATLAB

can any one tell me about website for download test images from it ?

8 years ago | 1 answer | 0

### 1

answerQuestion

PSNR of two unequal matrices

If I am executing a code of run length encoding on an image matrix, giving me an another image matrix of not of that size(due t...

8 years ago | 0 answers | 0

### 0

answersQuestion

converting numbers to matrix(matrix formation)

If I am having some numbers, e.g x=[ 12 12 12 2 2 2 2 3 3 ]; and now I want to convert into a matrix of 3 * 3. Which M...

8 years ago | 1 answer | 0

### 1

answerQuestion

how to convert this image to the original one?

<</matlabcentral/answers/uploaded_files/29795/mm.png>> <</matlabcentral/answers/uploaded_files/29796/lena_2.bmp>> ...

8 years ago | 1 answer | 0

### 1

answerQuestion

can anyone please convert this codef or 512*512*3 lena image, it is working well with * lena image

close all; clear all; clc; *[A,map]=imread('lena_2.bmp'); RGB = ind2rg...

8 years ago | 0 answers | 0

### 0

answersQuestion

see I am executing the code at the link given, but why it is not working on a 512* 512 , 8 bit image

http://in.mathworks.com/matlabcentral/fileexchange/39925-1d-2d-discrete-wavelet-transform/content/DWT/dwt.m While the code is w...

8 years ago | 1 answer | 0

### 1

answerQuestion

value of compression ratio can be 11 ?

value of compression ratio can be 11 ? or there is a fix range for compression ratio? if yes then what is that I am executing...

8 years ago | 0 answers | 0

### 0

answersQuestion

why 512 * 512 png image is executing properly the DWT code while 512*512 mbp image is not

close all; clear all; map=gray(256); % get db filter length 6 [Lo_D,Hi_D,Lo_R,Hi_R] = wfilters('bior5.5'); imDat...

8 years ago | 0 answers | 0