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KALYAN ACHARJYA


679 total contributions since 2017

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

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Answered
crop an image with control points
For code you are requested to contact me through author page (Or email:kalyan.acharjya@gmail.com). The code belongs to me an...

8 hours ago | 0

Answered
Check Positive or Negative Infinity
y=abc>=0 && isinf(abc)

12 hours ago | 1

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How many ways are generally used for image segmentation using only Image processing?
Yes, the approach of image segmentation depends on type of input image and complexity associated with the ROI and back ground ob...

16 hours ago | 0

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How can i find out homogeneity of an image?
Try this way- I=imread('circuit.tif'); %...........^^^ change name % creation of gray-level co-occurrence matrices from imag...

1 day ago | 1

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why is this code showing zero for all equations??
Enter the val value such that it must contain in x, then only following give some non zero value i=find(x==val); Other wise ...

1 day ago | 0

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counting the number of times a number appears next to the same one in a row?
num=[1 2 3 4 5 6]; % Change this one and test uniq_num=unique(num); digit_repeat=length(num)-length(uniq_num) Its works right...

3 days ago | 0

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what is the best method for resizing a binary mask to preserve its shape?
Have you tried with any approach, resizing the binary mask doesnot effect on its shape? #Simple way mask_modified=mask(1:2:end...

3 days ago | 0

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I want to sum up specific array in a matrix
x =[2.356 37 1.351 39 4.394 37 3.622 39 4.489 39 3.135 37 6.653 39] idx=(find(x(:,2)==37))'; sum_37=0;...

3 days ago | 1

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Finding maximum in a matrix
Suppose mat is 1000x1 matrix %this will give the maximum value within the matrix uptp 50 rows and 60 colm mat1=mat(1:50,1:60);...

3 days ago | 0

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Answered
Erros on Spatial Dynamic Panel Estimation
All custom functions files should be save individually in different matlab files, also file names should be same as functions na...

3 days ago | 0

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How do you remove specific rows from a cell array?
How do you remove specific rows from a cell array? data=num2cell(rand(70,1)); % Considering random cell array %delete suppose ...

3 days ago | 1

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display info of pixel after for loop
improfile; Read here Is this are you looking for?

4 days ago | 0

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change x/y/z axis values in surf(X,Y,Z) plot
[X,Y] = meshgrid(1:0.5:10,1:20); Z = sin(X) + cos(Y); surf(X,Y,Z) xlim([0 21]); ylim([1 10]); zlim([0 50]); Chosse the x,y...

4 days ago | 0

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How to find the largest area in this grayscale image with discontinuities in between?
Convert to binary image (Proper segmentation) Finding the largest blob (bwlabel) Sum of all pixels in largest blobs (binary i...

5 days ago | 0

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patch extraction of an image
im=imread('new.jpeg'); k=1; [rows colm]=size(im); for i=1:10:rows-10 for j=1:10:colm-10 im_sub=im(i:i+9,j:j+9); ...

5 days ago | 0

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how to open a thermal image in matlab
How to open a thermal image in matlab? im=imread('image name.jpg'); imshow(im); Is there any issue?

5 days ago | 0

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identify numbers greater than a specific number
T =[3 5 6 7 8 9 2 6 9 10 2 12 13]; idx=find(T>7) % Gives index position num=T(idx) % Gives Numbers

5 days ago | 0

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Answered
Optimizing nested for loops for image analysis
TPFsum=sum(TPFstack(:,:,1:z,:)); Is this?

5 days ago | 0

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save the slices of a deformes volume
for slice_number=1:430 b_slices=b(:,:,slice_number); % Save Individually end Or b_slices={}; for slice_number=1:430 b_sli...

5 days ago | 0

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When inserting an image into MATLAB, how do you read the n-by-3 array for pixels?
When Matlab read the image, it now matrix having elements value (Pixel Value) and spatial co-ordinates (x,y) that is position of...

5 days ago | 0

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discriminant analysis with tensor representation
"I found one question that there is different repeat times when running the same data with the same algorithm" Yes, data may be...

6 days ago | 0

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What represents the Y-axis in matlab's histogram?
What represents the Y-axis in matlab's histogram? it represents bins Read here, you will get the idea. Still issue, let us kno...

6 days ago | 0

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How to convert RGB to hsv?
For one frame, you can check here, as you mentioned the reference (wiki), I have implmented the same from here I assumed, you c...

8 days ago | 0

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How to use blockproc by location?
#Edited Considering Input Image is Gray, let say image1 and location of pixel is x,y image1(y-1:y+1,x-1:x+1)=255;

8 days ago | 0

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select the odd or even frames of a volume
Let say Image1 is the original 3D image resultant_image=image1(:,:,1:2:430)

8 days ago | 0

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Matlab code to solve an integral
#Edited syms x kw = 91371; CaO= 1.81 * 10 ^ -4; FaO= 0.1233; K = 2; fun = (FaO*(1+(K*CaO)*(1-x)))/(kw*CaO*(1-x)) int(fun)...

9 days ago | 0

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How do I calculate the precision, recall and F1score for an image database?
To calcuate the precision and recall you need ground truth images Lets clear the issue You have dermoscopy images You applied...

9 days ago | 0

Answered
How can I create a loop and plot a graph after each loop?
w = 0:50E3:300E3; omega = w.*2.*pi./60; % Array of omega values for beta=1:1:4 omega_n = 3*beta; % Omega_n is...

10 days ago | 0

Answered
How do I linspace this plot?
stem(freq/1e+12,2*abs(X(1:NFFT/2+1))) Use stem, instead of plot

10 days ago | 0

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