Community Profile # Elysi Cochin

Last seen: 2 days ago Active since 2012

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Question

plot arc that pass through a particular point
I have attached my (x,y,z) coordinate values And i plot these values using the below code load XYZ for i = 1 : size(XX,2) ...

3 days ago | 1 answer | 0

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How to smoothen curves?
I have attached my data values I plot it using the below code load data x = data(:,1); y = data(:,2:end); figure(2), plot(x...

10 days ago | 2 answers | 0

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Question

Draw arc with specified angle difference
Having 2 datas as attached in Data.mat, how to draw arc with a specified angle difference (angle difference can vary say 15, 30 ...

15 days ago | 3 answers | 0

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edge pixel frequency of image
How is edge pixel frequency of an image found?

19 days ago | 1 answer | 0

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extract 64 lowest frequency components of fft
How to extract 64 lowest frequency components using fourier transform of an image fft2 or fftn which function to use, and how t...

1 month ago | 1 answer | 0

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Question

pad matrix to a particular size
I have a matrix M of size m x n m and n may or may not be equal - M can be rectangular or square matrix - where m and n are le...

1 month ago | 2 answers | 0

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Give title for Table
Is it possible to give title for a table i have displayed as below If i wanted to give a title 'My Table', how to give it? Det...

2 months ago | 2 answers | 0

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why does dimension of input variable change in ode45
i wanted to compute ode45 with the following input ABCD = [3453151,3880795,334228,236989;3527618,3939199,341859,245399;... ...

2 months ago | 1 answer | 0

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Question

delete zeros in cell array
i have a cell_array with values cellarr = {'b','a','a','a','b';0,'c',0,'b',[];0,'a',0,'d',0;'a','a','b',[],[]}; i wanted to d...

2 months ago | 1 answer | 0

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Question

find the row and column value of a specific value in cell array
i have a cell array with values cellarr = {'a','b','c',3,5;'b',5,'a',[],[];'a','c',3,'a',4;'b','a','c','c',3}; i wanted to f...

2 months ago | 1 answer | 0

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find the object closest to the center
i did adaptive threshold and got the output as below for 3 different inputs Now, i wanted to keep only regions marked 1 and 2...

3 months ago | 2 answers | 1

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Question

how to change the e+00 format
on computation i get a vector value as below index = [7.8651e+04;177445] because of the e+04 format, on further computation i ...

3 months ago | 2 answers | 0

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Question

Read images from a folder in a particular order
I have a folder, and subfolder of images in it. When i read images it comes in the order 1, 10, 11, 12...etc, instead of 1, 2, ...

3 months ago | 1 answer | 0

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Question

how to compute derivative
having all the values in the above equation, is the below code correct for dE(t)/d(t) computation? dEt = beta * (1 - sigma) *...

3 months ago | 1 answer | 0

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Question

How to stop execution of a program through code?
When i execute a program, if the execution exceeds 2 minutes, i wanted to stop the execution through code. What should i do to c...

3 months ago | 1 answer | 0

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Question

write a row from excel to a text file
How can i write a string row ( not English ) from excel to notepad or wordpad. Is it possible in Matlab? I have attached a samp...

3 months ago | 1 answer | 0

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Question

How to mirror pad a matrix
How to do mirror padding to the matrix I = [ 1 6 3 3 4 5 1 2 2 5 7 2 2 2 6 2 4 4 6 8 3 5 3 8 5 3 3 4 5 2 2 7 6 5 2 2 7 6 2...

5 months ago | 2 answers | 0

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How to change all the colours in the image to black
how to change all the colours in the image to black except the white colour in image?

5 months ago | 2 answers | 0

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How to find what percentage of image an object covers
From the given image, how can i find the percentage of cells covers the image or in other words what percentage of cell covers t...

5 months ago | 1 answer | 0

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Question

How to preserve edges when rotating images
How can i make sure that my images dont cut off when using rotation in image augmentation imageAugmenter = imageDataAugmenter('...

6 months ago | 1 answer | 0

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Question

How create desired number of images in the folder
How to augment a folder of images? Suppose i have 7 images in a folder, i wanted to augment these 7 images and create a total o...

6 months ago | 1 answer | 0

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Question

how can i get the regression values into a variable in neural network
When we fit-data-with-a-neural-network, we can get the regression graph, when we click the Regression button in the nntool windo...

7 months ago | 1 answer | 0

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Question

What does the equation do in the 2 images to combine it to one image
Please can someone explain what happens in the below code cb and cr are chrominance in red and blue channels bmean and rmean ...

10 months ago | 1 answer | 0

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Question

Find the coordinates nearest to the center coordinate of a patch in an image
i have an image of size [512 512], and xy coordinates values, which have been found on the whole image. (I have attached an exam...

1 year ago | 2 answers | 0

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how to check if (x,y) coordinates fall within another (x,y) coordinate
i have the x,y,w,h --> [x position, y position ,width and height] of the two black boxes and the red boxes inside the black boxe...

1 year ago | 1 answer | 0

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Question

Blob segmentation and writing it to folder
i have segmented few blobs using the below code ccnt = 1; for blob = 1 : n thisBoundingBox = measurements(blob).BoundingB...

1 year ago | 1 answer | 0

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Question

draw bounding box around a character
The code i used is Ch = bw(boundrow(1):boundrow(end),boundcol(1):boundcol(end)); i'll get the character into the variable Ch ...

1 year ago | 1 answer | 0

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Question

write an image file
i have a image im of uint16 datatype figure(1), imshow(im) figure(2), imshow(uint8(im)) figure(3), imshow(im,[]) all the abo...

1 year ago | 1 answer | 0

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Question

find the next row of an element in a matrix
i have vector v v = [4,5;1,2;1,3;1,4;2,6;5,7;4,7;3,4;1,5;2,3;7,9;3,5;8,9;1,6;8 10;5,9;2,4;6,9;2,5;1,7;4,9;3,7;2,8;7,8;4,6;1,9;3...

1 year ago | 1 answer | 0

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Question

find different combinations of splitting a vector
having a vector V, how can i find the different ways to split this vector v into subvectors such that the sum of each subvector ...

1 year ago | 1 answer | 0

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