How to creat automatic cropping for braille text (image)

i have a image of braille scan, i want to creat automatic cropping for this image, what's tools in matlab that i can use ?

Answer 1

[Image Analyst]

I'd first try imtophat() or imbothat() to emphasize the spots. Then it really depends on what area(s) of the image you want to crop, like each letter, each paragraph, the whole group of paragraphs or what???.

[afif fadilah]

thank u for your answer,, i want to crop like each letter,, exactly i want to konversi braille to alphabet,, would you like to explain to me more? thank you ....

[Image Analyst]

I don't even know where each letter starts and stops, so you're on your own there.

[afif fadilah]

how to create starts on stops sir? or how to extract image by area? Braille font size commonly used is the high of 0.5 mm, and spaced horizontally and vertically in a cell point of 2.5 mm. i want to get matrik value, example like this :

[Image Analyst]

I'd take projections vertically and horizontally to try to find natural breaks in blob locations.

verticalProfile = sum(binaryImage, 2);
horizontalProfile = sum(binaryImage, 1);

[afif fadilah]

ok, thank u sir, i'll try....

Answer 2

[KSSV]

Refer the link: https://in.mathworks.com/matlabcentral/answers/110412-extract-text-from-image

[afif fadilah]

thank you for answer,, i'll try ,