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# Mahmoud Hassan

16 total contributions since 2018

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Question

Attempted to access i(3); index out of bounds because numel(i)=2
i am getting this error "Attempted to access i(3); index out of bounds because numel(i)=2 ". exactly in the line 289 below: ...

2 mois ago | 1 answer | 0

### 1

Question

how to know if image is rgb?
i want to set an if condition to know if the image i am reading is rgb image or not

3 mois ago | 1 answer | 0

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Question

what is the difference between rgb2gray and im2bw ?
I want to know the difference between the two functions ... arent both convert the rgb image to black and white image ?!

3 mois ago | 1 answer | 0

### 1

Question

print matrix in txt file row by row
i want to print matrix of numbers in a txt file row by row .... which means each line is a row i am using this code to write t...

5 mois ago | 1 answer | 0

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Question

what is bwlabel function doing ?
i want to understand the logic of bwlabel function .... L = bwlabel(BW,4) what is it doing ? and L = bwlabel(BW,8) ... i want ...

5 mois ago | 1 answer | 0

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Question

Error using + Matrix dimensions must agree.
i have an error says Error using + Matrix dimensions must agree as showed in the pic and this is the part of code that have the...

6 mois ago | 0 answers | 0

### 0

Question

how to divide image into 5*5 blocks
hello, i have a binarized image of fingerprint that i want to divide into 5*5 blocks and then count the number of zeros " black ...

6 mois ago | 2 answers | 0

### 2

Question

write multiple txt files
hello, i want to read 45 images. these images are binarized and their names is numbered from 1 to 45 and then count number of bl...

7 mois ago | 1 answer | 0

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Question

In minutiae feature extraction algorithm
In minutiae feature extraction algorithm for fingerprint, i extract the ridge and bifurcations points x,y,angle. what i want to ...

8 mois ago | 0 answers | 0

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Question

how to calculate the angle of rotated image

9 mois ago | 1 answer | 0

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Question

how to match rotated fingerptint using minutiae feature extraction
I am using minutiae feature extraction algorithm to extract unique points from fingerprint and use these points for matching ano...

9 mois ago | 1 answer | 0

### 1

Question

append data in excel sheet
I want to append date and i want all these date in the same row ... also i want to know how to append another data in the row ne...

10 mois ago | 1 answer | 0

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Question

write in txt file staring from the last line
I just want to write in txt file starting from the line after the last line not to delete all lines and start from the beginning...

10 mois ago | 1 answer | 0

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Question

Error " Matrix dimensions must agree. "
I am trying to make a Bifurcation Orientation on a fingerprint image but i get this error! this is my code and the error exactl...

10 mois ago | 0 answers | 0

### 0

Question

Unable to perform assignment because the induces on the left side are not compatible with the size of the right side
I am working on fingerprint minutiae algorithm and i get this error when i work on some fingerprint images. the error says Unabl...

10 mois ago | 2 answers | 0