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 e...

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 pixe...

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 ...