How can I detect green colors in an image?

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Raphael Ferreira
Raphael Ferreira le 27 Nov 2018
Réponse apportée : SC P le 29 Nov 2018
I'm developing a code to detect objects in an image through the algorithm of Viola and Jones, but it did not work out perfectly because the image has many details. So I decided to start by first detecting the color and then defining the objects through recognition. How can I detect green colors in an image? Since I'm grateful!

Réponses (2)

KALYAN ACHARJYA
KALYAN ACHARJYA le 27 Nov 2018
Modifié(e) : KALYAN ACHARJYA le 27 Nov 2018
See color detection is very vast topic, any color generation based on three components R, G,B.
Green color also varies from lower to maximum.
Are you looking for those pixels which having R=0,G=Maximum Level, and B=0? In 8 bit image it would be (0,255,0)
green_component=imageRGB(:,:,2)
  4 commentaires
Raphael Ferreira
Raphael Ferreira le 27 Nov 2018
Okay! I'll look!
Raphael Ferreira
Raphael Ferreira le 27 Nov 2018
Modifié(e) : Raphael Ferreira le 27 Nov 2018
I can detect it with your code KALYAN ACHARJYA . However the lighting of the image influences a lot. Is there any function or code that leaves the illumination in the uniform image?

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SC P
SC P le 29 Nov 2018
How to detect green color variation?

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