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KALYAN ACHARJYA


665 total contributions since 2017

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

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Answered
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...

약 2시간 ago | 0

Answered
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); ...

약 4시간 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?

약 6시간 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

약 6시간 ago | 0

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

약 9시간 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...

약 20시간 ago | 0

Answered
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...

약 20시간 ago | 0

Answered
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...

1일 ago | 0

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Answered
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...

2일 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...

4일 ago | 0

Answered
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;

4일 ago | 0

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

4일 ago | 0

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Answered
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)...

5일 ago | 0

Answered
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...

5일 ago | 0

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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...

6일 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

6일 ago | 0

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Answered
How to separate matrix elements based on randomized indices
a=rand(2,10) [rows colm]=size(a); rand_colm=randi(colm-3); mat1=a(:,1:rand_colm) mat2=a(:,rand_colm+1) mat3=a(:,rand_colm+2...

6일 ago | 0

Answered
HOW TO CONVERT GRAY IMAGE TO HUE IMAGE?
Have you read about Hue? Read here in wiki I dont think there is any conversiotion way, if you do somehow, all gray pixels=0 i...

7일 ago | 0

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Answered
Open image, read block of pixels, average the intensity of the block, display average intensity matrix
Considering Gray Image, if not convert to grayscale then perform im=imread('Image.jpg'); %.................^^ Change as per i...

7일 ago | 0

Answered
How to fill holes in binary image
"How to fill holes in binary image" J = imerode( binary_image_name , SE ) ; % chosse the structuring elment as per your requir...

7일 ago | 0

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How can I keep MATLAB command window always on top
If you are using 2015b or later just drag window and drop

8일 ago | 0

Answered
Label multiple boxplots in same figure
As you didnot provided the K and M, so I did not able to cehck my code, this is perfectly works on bar charts, please try and le...

9일 ago | 0

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Plotting two matrixes in same plot
surf(A,B)

9일 ago | 0

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How to add multiple input image file in the program? I am having images from a1 to a10. Kindly help me to resolve this problem
Keep all images in same working directory (Keep all 10 images only on current directory)- clc; list=dir('*.jpg'); for j=1:len...

9일 ago | 0

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how to swap two bits in matlab.? which cammond is used for this..?
>> a=de2bi(28) a = 0 0 1 1 1 Here swap first and Fifth Elements (Change as per your requirements) ...

9일 ago | 1

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Answered
How do I multiply an integer with a single value from the matrix?
Here Module_Information is cell >> whos Module_Information Name Size Bytes Class Attribu...

9일 ago | 0

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Help Writing One's Own Functions
I have tried with similar, I have no issue If I misundestood the question, please clarify?

10일 ago | 2

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Answered
multiple plots on same axis
Ckwh=0.0001; n=1:2:20; A=[]; for i=3:12 A=(((1+i).^n(:)-1)/(i*(1+i).^n(:)))*Ckwh*8760; plot(n,A); hold on; en...

10일 ago | 1

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Answered
Generate random variables over an interval
I wanted to generate a standard normal variate 'zn' over the interval (0,1). zn=rand(1)

10일 ago | 0

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