how i could remove hidden color for this image ?

[diegomage]

this image appears normal apparently



but when i apply connected components remove 200 area


appears this

Code: Select all

 convert  imaget.jpg  -define connected-components:area-threshold=200 -define connected-components:mean-color=true -connected-components 8 out.png 

I expected obtain only rect images not distorted image
please help me whit this

[diegomage]

I check my image and I see that using this command can solve the problem

Code: Select all

  convert   image .jpg +dither   -posterize 2       color_uniform.gif

I dont view the colors when I use erode command

[fmw42]

If you are trying to remove the thin white lines using -connected-components, that will not work, since each white line is connected to the large white region and the top

[diegomage]

hi I refer that i solve whit this last command I post because I dont see the color with low intensity and I change this colors with posterize


thankyou for the help