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Subhadeep Koley


Last seen: Today

MathWorks

242 total contributions since 2019

I am a Software Engineer here at The MathWorks.

My areas of interest are Image Processing, Pattern Recognition, Computer Vision & Graphics, and plotting.

DISCLAIMER: Any advice or opinions here are my own and in no way reflect that of The MathWorks.

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Answered
How to detect and separate pixels in an image
rgbImg = imread('image.png'); grayImg = rgb2gray(rgbImg); greenMask = detectGreen(rgbImg); figure imshow(rgbImg); hold on...

9 days ago | 0

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Answered
Help with User defined function
function y = UnitConversionsFunction(x, options) % Validate that value is a character vector or string scalar. (Works only wi...

9 days ago | 0

Answered
Goodness of fit using chi2gof
Wasim, this link might help you.

17 days ago | 0

Answered
How do I change the array of 200x2x100 to 100x2x200?
% Generate demo data data = rand(200, 2, 100); % Permute the data newData = permute(data, [3 2 1]); size(data) size(n...

17 days ago | 1

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Answered
App Designer Plot Multiple Graph
The attached minimum working example App might help you! Have a look.

17 days ago | 1

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Answered
How can I overlay an edge detected from a binary image onto a RBG image?
% Read the RGB images fig00RefFull = imread('00-Ref-Empty.jpg'); fig00RefEmpty = imread('00-Ref-Full.jpg'); % Convert those...

18 days ago | 0

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Answered
MATLAB app designer not playing sounds
I have attached one demo minimum working example. Have a look. It might help you fix the issue. Also, if possible provide the...

18 days ago | 1

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Answered
how to change hyperspectral image size array?
This code snippet might help. % Creating a random data dataCube = rand(3248,242,256); % Permuting the 2nd and 3rd channel ...

24 days ago | 1

Solved


Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

28 days ago

Answered
'unrecognized function or variable 'yolov30ObjectDetector'
This example you're executing, requires the Computer Vision Toolbox™ Model for YOLO v3 Object Detection. You can download & inst...

28 days ago | 0

Answered
How to import a .MAP OMNIC picta file into matlab
As, .MAP is not a standard file format. It is difficult to provide exact solution. However, if the .MAP file is a binary file,...

1 month ago | 0

Answered
Displaying Multispectral Image in MATLAB
You can not use imshow(_) or imagesc(_) to display Multi-plane images having more than 3 channels. You can use sliceViewer(_) t...

1 month ago | 1

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Answered
Combining hyperspectral image bands R, G, B and NIR
% Read the TIF file cube = imread('yourFile.tif'); % cube is your 8 band TIF file % Extract R, G, B, and NIR band according ...

1 month ago | 0

Answered
Read and Extract channel data from Hyperspectral images
You can use the hypercube(__) function to read and explore hyperspectral images. % Read the hyperspectral image (specify your i...

1 month ago | 0

Answered
Stacking indexed images and view the resulting volume
This code snippet might help. A = imread('image2.png'); B = imread('image3.png'); C = imread('image4.png'); [D, map] = rgb...

1 month ago | 0

Answered
I have multispectral image of [ 8225,8850,6]. How to read image and i need to seperate bands for analysis?
For visualization of individual pixel spectra / hyperspectral band image you can use the interactive hyperspetralViewer App. e.g...

1 month ago | 0

Answered
How can I combine three hyperspectral bands into an "RGB" image?
You can use the hypercube(__) function to read your ENVI file (.dat and .hdr file pair), and also the colorize(__) method will h...

1 month ago | 0

Answered
How to create RGB image with 3 bands from hyperspectral image?
You can use the hypercube(__) function to read Hyperion EO-1 L1R files and also the colorize(__) method will help you to estimat...

1 month ago | 0

Answered
IN remote sensing seven spectral bands are exists in multi spectral images, how to make seven spectral bands of images into one false color image in matlab not in ERDAS
If anyone using R2020a or later, then the colorize function of the hypercube might be useful. The above mentioned fetures come ...

2 months ago | 0

Answered
hypercube or hyperpca not found. Not even in R2020b .why ?
hypercube, hyperpca and other hyperspectral related functions come under Image Processing Toolbox's Hyperspectral Imaging Librar...

4 months ago | 1

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Answered
PDF Latex file using Matlab
Copy and paste your code into a new Live Script. In the Live Editor tab, select Export > Export to LaTeX. MATLAB will also auto...

5 months ago | 0

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Answered
How to load AVIRIS datasets
You can use the hypercube(__) function to read AVIRIS image .hdr files. % Read the AVIRIS image (specify your image file name h...

5 months ago | 2

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Answered
Save the Figures Getting From ANFIS designer
In the Membership Function Editor, Click on File > Export > To Workspace. Provide the workspace variable name (e.g. yourMemFis) ...

5 months ago | 0

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Answered
dn2reflectance issues (need to radiometrically correct imagery)
dn2reflectance(__) would work fine as long as the metadata of you multispectral image contains the reflectance gain values. Belo...

5 months ago | 0

Answered
Random square sampling for single channel images
Hi, here is one working example. Hope this helps! % Read the original image img = imread('cameraman.tif'); [row, col, ~] = s...

5 months ago | 0

Answered
how to plot matrix
This code snippet extracts out the first image and plots it. Similarly you can extract the other images. % Defining a random ma...

5 months ago | 0

Answered
How to a='10101111' convert array b=[1,0,1,0,1,1,1,1]
charArray = '10101111'; newCharArray = double((charArray == '1'));

5 months ago | 1

Answered
FFT OF A SIGNAL
Hi, there are several lines (e.g. line 39, line 110, etc.) in your code, which start with the word "Appendix". Those lines are n...

5 months ago | 0

Answered
compacting a large number of plot lines
ind = 1; angleValues = 0:20:360; % Modify angle values as per your requirement phiValues = zeros(1, numel(angleValues)); fo...

5 months ago | 1

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Answered
Export image from image segmenter and maintain the original image
1) Click on the "Export" button and then click on "Export Images" 2) Save the Final Segmentation mask with the name BW, click o...

5 months ago | 0

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