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KALYAN ACHARJYA


783 total contributions since 2017

#Freelancer (Part-Time)
#Image Processing
#Alma-mater Tezpur University India

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Answered
Image segmenting or image division
Lets say Image is image1 having size 64x64 [rows colm]=size(image1); m=1; im1=[]; for i=1:4:rows-4 for j=1:4:colm-4 im1{m}...

1 day ago | 0

Answered
using svd before canny edge detection
im=rgb2gray(imread('2.png')); figure,imshow(im); [data_svd, S,D]=svd(double(im)); edge_image=edge(data_svd,'canny'); figure,...

1 day ago | 0

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Answered
How do I make 2 bar stacked per month (x-axis)?
Test file is attched. data=xlsread('sample_file_test.xlsx'); bar(data,'stacked');

1 day ago | 0

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hi everyone, how can i plot a matrix in logarithm scale dB
load('dBscale.mat') loglog(devst_x) Is this you are looking for?

1 day ago | 0

Answered
problem with if function ( Error using < Not enough input arguments.)
0.0677*rec*prc*dti/lt; %..................^ Define lt

1 day ago | 1

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Answered
Incorrect Dimensions for Matrix Multiplication in DFT script
What I did? For matrix multiplication, the number of columns in first matrix must be equal to the number of rows in second matr...

2 days ago | 0

Answered
How can I store the outputs of my function into a matrix?
#Edited:Initialize l=1 before for loop d_array={}; m=1 for... d_array{m}=horzcat(d, i, j); m=m+1; Save the all generated a...

3 days ago | 0

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Answered
Random Number for For Loop
iter_num=10; % change as per your requirement x=[]; for i=1:iter_num x(i)=randi([5 9]) end or iter_num=10; % change as per...

3 days ago | 0

Answered
How can I sum a specified region of a matrix?
mat=matrix_given(20:25,1:3,:); result=sum(mat(:)); For detail read Multidimensional Arrays

3 days ago | 1

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Index exceeds array bounds error
Yes no error with w=rand(253,100); Check: >> whos w Name Size Bytes Class Attributes w ...

3 days ago | 1

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Answered
How to create matrix using different columns but same length
Do the cell array final_mat={1signal_mat,2signal_mat, .......} Here 1signal_mat,2signal_mat etc are matrices with any sizes

3 days ago | 0

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change the iteration in for loop
# Experts need your suggestions here for i=1:10 c(i)=...% do while isnan(c(i)) || c(i)>0.009 c(i)=.. end end I know multi...

3 days ago | 0

Answered
How do i get periodic decaying impulse function using combination of sine and exponential functions
I didnot go through your code, just read the title of the questions- i get periodic decaying impulse function using combination...

3 days ago | 0

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How do I increment the value of a variable after each statement by 1?
C=zeros(1,50); for i=1:50 C(i)=....% end

3 days ago | 0

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Mix-integer optimization problem using GA
Define x1 as array with allowable values, x1 =[32 40 50 65]; if sum(x1==input_value)>=1 % Allowed % Do something else %No...

3 days ago | 0

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Continually updating graph/ Dynamic Graph/ Live Graph
Yes, you can do that. Use linkdata, which allows automatically update graphs when variables change.

3 days ago | 0

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Imfindcircles() detect circles which are not there..
When I checked imfindcircles on subtracted image (all pixels 255), I didnot get any circles. im=imread('subtracted.png'); Rmi...

4 days ago | 0

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Understanding the if command
elseif isempty(c1) o(c(1)+1:end)=o(c(1)+1:end)-2^16; else %do nothin...

4 days ago | 0

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Answered
Variance of image in matlab
var_result=var(gray_image) It returns the row matrix variance with respect to each column Detail Documentation var For Compl...

4 days ago | 0

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How to normalize an image after applying median filter on the image?
How can I normalize an image Use im2double Please dont expect that filtering can remove all noise. You acn try other filters...

4 days ago | 0

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Why does the image after subtracting the original image from average image displays a black screen
There may be two issues- Suppose the image as following- image=[3 4 5;5 6 7;1 2 0]; If you calulate the average of the ima...

4 days ago | 0

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Answered
How to code "while" loop for the following problem?
ww=[3.749893 5.217726 0.412081 0.113385 1.27062 ...

4 days ago | 1

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Answered
Gaussian noise on dicom images
Try imshow(C,'DisplayRange',[]);

4 days ago | 0

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How to plot a curve using differential (dy/dx) data.
Do the integration of dy, both sides, which gives y, then plot (x,y)

4 days ago | 0

Answered
Undefined function or variable but variable is defined
one is ul and other is u1 ul = u0 +((deltax/EA)*(B*N0+(1-B)*n1)); % This is UL u0 = u1; % This is U1 Hehe.. :)

4 days ago | 1

Answered
Axis Label Affecting Size of Plot Area
Do check here ylim

4 days ago | 0

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While plotting, reverse phase shift of square wave is observed?
Your Code: S2_nh = exp(-1i*nh*2*pi*D)*S1_nh; %...........^^^ I have removed the - sign, as y2 (blue signal) depents on S2_nh,...

4 days ago | 0

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How to transform a unit8 variable into a double one?
data_double=double(data); See details double

4 days ago | 0

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Replace elements of a matrix by a smaller matrix which contains circular shaped values margins
A=[1 1 1 1 1;1 1 1 1 1;1 1 1 1 1;1 1 1 1 1;1 1 1 1 1]; B=[0 0 0 0;0 5 5 0;0 5 5 0;0 0 0 0]; [r c]=find(B>1); A(r,c)=B(r,c) R...

4 days ago | 0

Answered
Convert String to binary in each element
kol='1'; data1=str2double(kol); data2=logical(data1) Command Window: >> whos data2 Name Size Bytes Clas...

5 days ago | 1

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