Search found 8 matches

by 6bit
2020-01-28T17:56:30-07:00
Forum: Bugs
Topic: region not restricting modification
Replies: 4
Views: 2400

Re: region not restricting modification

All good.

Thanks.
by 6bit
2020-01-28T11:48:34-07:00
Forum: Users
Topic: Removing Alpha Mask
Replies: 7
Views: 1838

Re: Removing Alpha Mask

Hi Fred,

I've reproduced my problem as a short sequence of magick commands and filed it as a bug under "region not restricting modification".
I will work on your example (thanks!) in my case to see if it's appropriate.

Thanks
by 6bit
2020-01-28T11:39:14-07:00
Forum: Bugs
Topic: region not restricting modification
Replies: 4
Views: 2400

region not restricting modification

Hi, I had a problem when using -region to clear an area in a (RGBA) png: areas outside the region were being changed. It appears that the RGB of areas outside the region are multiplied by the A value. I think this must be a bug not a feature. I have reduced the problem to the following micro size: q...
by 6bit
2020-01-27T22:39:42-07:00
Forum: Users
Topic: Removing Alpha Mask
Replies: 7
Views: 1838

Re: Removing Alpha Mask

One more thing. My thinking is that this is a bug as I would hope there would be no changes to an image outside the regions I change.
If it is then I need some alternative method, like extract/multiply/replace.
by 6bit
2020-01-27T22:35:12-07:00
Forum: Users
Topic: Removing Alpha Mask
Replies: 7
Views: 1838

Re: Removing Alpha Mask

Fred, Thx for quick response! I don't have immediate access to a file server so I'll try this again with words :-( The big picture: I have a "mask" image in a png. I want to extract some parts to smaller image masks - no problem, works. Then I want to clear these areas in the original leaving any ot...
by 6bit
2020-01-27T21:57:58-07:00
Forum: Users
Topic: Removing Alpha Mask
Replies: 7
Views: 1838

Removing Alpha Mask

Hi, I have a png with alpha which is used as a mask. The R,G,B,A channels are all identical, mainly zero, ones on the mask and a short ramp between. I extract the mask from certain areas to other pngs then I want to clear these areas in the original image. I tried many approaches but this should wor...
by 6bit
2016-11-28T20:07:19-07:00
Forum: PerlMagick
Topic: Jpg already in memory
Replies: 1
Views: 18708

Re: Jpg already in memory

OK, I found the answer in the docs: what I have is a "Blob".
I can easily "read" the Blob into PerlMagick as an image.
Works like a charm.
by 6bit
2016-11-21T11:09:07-07:00
Forum: PerlMagick
Topic: Jpg already in memory
Replies: 1
Views: 18708

Jpg already in memory

I wish to process an jgp image with perlMagick.
It is exists in a perl variable (in memory) rather than in a file.
I don't see how to process it from this state, must I write it out
to a file to process it or can it be parsed and inserted into perlMagick directly?