Legacy ImageMagick Discussions Archive

I want to remove the black pixels part of a group of pixel with less than 5 pixels, whatever the pattern is. Here is a file, I want to remove the black isolated pixels. http://farm4.staticflickr.com/3772/9015573718_f34d0cea74_o_d.gif Of course I want to keep the three pattern on the bottom left, but ...

I understand the one pixel surrounded well. But my problem is if there is more than one pixel I can't target the whole pattern. In your exemple in the second message : convert ^ test.png ^ -negate ^ -morphology Thinning ^ "3x4:0,0,0, 0,1,0, 0,1,0, 0,0,0" ^ -negate ^ test4.png But in fact this code ...

Ok, thx for your answers. I had some time to check this out but it's still unclear for me. :p I got a lot of things work with Thicken, but is there a way to be more clear about it. For instance : If I have : 000 010 010 010 000 and I want to remove if this pattern is matched. I did : -morphology ...

hello,
thank you that's awesome !!
...
now that I have you, do you know if it's possible to do the same thing but with several pixels ?
Detect for instance 2 isolated pixels ?
this pattern for example :
000
010
010
000
or
0000
0110
0000

Hello everyone, it's my first topic on this website. I play with imagemagick from times to times but now I'm stuck with a very simple task. I have an image in black and white. (gif converted with -monochrome) I want to remove isolated black pixels, so : remove black pixels surrounded by 8 white ...