Legacy ImageMagick Discussions Archive

hi all..
thanks for viewing..

i am working on region identification of image. i am using Fred's magic wand script .i am working on windows so i extracted the commands of the script and i got satisfactory result as below:


i am giving x,y co-ordinates for selecting region as u can see the black circle mark and 29% tolerance value and got this output which is perfect..
getting exact mask.


but when i tried for below image the results are not satisfactory

for 20% tolerance
output:

i want only the mask of selected furniture right hand sofa .
if i am decresing the toleance value to 19% got the below output which is not giving whole area of right hand furniture which i am selecting

same i faced problem while selecting other region as below

for 21% tolerancefor 21% tolerance

but it is also not proper mask as the curtains also get selected which i dont want only middle sofa should get selected.
what i come to know about magicwand script..that it selects contiguous region from specified x,y co-ordinates and this selection depends also tolerance value.

so can u please tell solution to my problem. Is there is way in magicwand script commands so that i get proper mask.


any help will be appreciated

My magicwand script will only isolate individual objects not all separate objects of the same color. So you probably need to do it 3 times, once for each green furniture and combine the masks. That is if there is enough color separation between the furniture and the curtains.

Their are other ways of selecting as well. If you can find a color space that maximized the difference between the objects.

This is actually known as the segmentation problem, and is a major part of image processing which literally hundreds of techniques.