Legacy ImageMagick Discussions Archive

This works totally brilliantly and just the way i wanted it to.
It is fast and work !!
Thank you for the whole team that has helped me so brilliantly.
Appreciate it a lot
Matt

Thanks geemack.
This doesn't work here - red is still transparent.
I have IM 6.697
Thankyou

Thanks to both of you... Fantastic work!!

I tried this and am on IM6.x and it works 99% as needed.
The red shows up but is semi transparent. What i need is the red 100% full pixel color not transparent with the original semi transparent pixel on top of it.
Hope this makes sense.

Thank worked fantastically and i appreciate you explaining how you did it... I understand for next time.

How would i put the red under the semi transparent part please?

Thanks a lot.
To answer your questions.
Im using the command line on ubuntu.
Here is the image. https://www.dropbox.com/s/7efapn3t3vp5txv/test-image.png?dl=0
Basically the goal is 2 steps.
Step 1 make transparent the pixels that are 30% transparent or less.
Step 2 put a color for example red under ...

thankyou...
"convert in.png -channel A -black-threshold 30% +channel out.png"
that command does something but it does no make the pixels transparent and instead just shows the original image that was faded.
i have a faded image and what i want to be able to do is make 100% transparent pixels that ...

thanks for the reply.
Yes, the pixel should be transparent.
Matt

Hi everybody.
I've been trying to work this out for days.
I have an image and with the command line i want to find and delete all pixels that are below a given opacity level..
I.e. delete all pixels below 30% opacity.
How can this be achieved please as i cannot work this one out.
Regards and thanks ...