How can I detect green colors in an image?

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!

Answer 1

[KALYAN ACHARJYA]

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)

[KALYAN ACHARJYA]

No, if you want to detect the scale of green then you can use conditioning.

Color is subjective term (human perception), better to talk with pixel values

There are numerous article on color detection, check here custom function.

[Raphael Ferreira]

Does this function detect on any scale of green? How to in this image:

[Raphael Ferreira]

Okay! I'll look!

[Raphael Ferreira]

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?

Answer 2

[SC P]

How to detect green color variation?