Search found 60 matches

by miket
2017-11-12T12:18:21-07:00
Forum: Developers
Topic: lcms implementation in IM
Replies: 4
Views: 174

Re: lcms implementation in IM

Many thanks folks :) :) :)

Given the increased use of HDR I'd be very surprised if I'm the only one who would benefit from this. Hopefully it's not too tricky a task.

Mike
by miket
2017-11-12T08:41:42-07:00
Forum: Developers
Topic: lcms implementation in IM
Replies: 4
Views: 174

Re: lcms implementation in IM

Thanks for this Snibgo, I ran a similar test on my (Q16) system with similar results. I'm processing "true" HDR images (Dmax around 4.5, 15 or so fstops) which have good and accurate detail in the shadows, therefore this integer rounding is causing me some jip. I understand that lcms2 does work with...
by miket
2017-11-11T13:25:18-07:00
Forum: Digital Image Processing
Topic: Display HDRi images on UHDR TV
Replies: 2
Views: 15810

Re: Display HDRi images on UHDR TV

Hmmmmm,

15,000+ views - surely there must be some constructive suggestions? :)
by miket
2017-11-11T09:39:58-07:00
Forum: Developers
Topic: lcms implementation in IM
Replies: 4
Views: 174

lcms implementation in IM

Hi, I'm running icc profile conversions on HDR (.exr) images using Q16 HDR IM. The profiles are simple matrix profiles (i.e. not LUT profiles) It appears that running the profile command is mapping a floating point value into a 16bit integer value following icc conversion and, further, is clipping a...
by miket
2017-11-10T05:23:51-07:00
Forum: Developers
Topic: Which Python API?
Replies: 2
Views: 2090

Re: Which Python API?

Thanks Fred,

I suspected this. Think I may stay with perl for the moment. Better the Devil you know :)

Mike
by miket
2017-10-15T04:26:35-07:00
Forum: Developers
Topic: Which Python API?
Replies: 2
Views: 2090

Which Python API?

Hi Folks, I've been using PerlMagic for a while now. However, I've recently been using Python for some (non-imaging) work, and would like to start using Python with ImageMagick. There appears to be a number of different wrapper implementations, some of which do not appear to have been updated recent...
by miket
2017-04-03T05:03:55-07:00
Forum: Bugs
Topic: Possible bug compose:clamp=off Perl Magick
Replies: 13
Views: 5691

Re: Possible bug compose:clamp=off Perl Magick

ImageMagick 7.0.5-5 Q16 x86_64 2017-04-03 - (ImageMagick-7.0.5-5-beta20170402) Thanks folks, this now appears to work :) Just an observation on the implementation: Running the following test code: print $image_a->Get('compose:clamp')."\n"; print $image_b->Get('compose:clamp')."\n"; $w = $image_a->Se...
by miket
2017-03-31T04:52:56-07:00
Forum: Bugs
Topic: Possible bug compose:clamp=off Perl Magick
Replies: 13
Views: 5691

Re: Possible bug compose:clamp=off Perl Magick

My previous post on this topic (some 6 months ago, and when I was much less familiar with IM) has received 3400+ views, so presumably the are a few users out there interested in the same issue!
viewtopic.php?f=7&t=30631
by miket
2017-03-31T04:48:25-07:00
Forum: Bugs
Topic: Possible bug compose:clamp=off Perl Magick
Replies: 13
Views: 5691

Re: Possible bug compose:clamp=off Perl Magick

I'd agree. I've tried all of snibgo's permutations and combinations without success. Also it does not seem possible to "Get" the value of any of the default settings.

Wizards - any chance of adding this really useful feature please?
by miket
2017-03-31T01:42:36-07:00
Forum: Bugs
Topic: Possible bug compose:clamp=off Perl Magick
Replies: 13
Views: 5691

Re: Possible bug compose:clamp=off Perl Magick

I've tried $get = $image_a->Get('option'), but this returns nothing. Also tried Get('compose:clamp') and Get('option:compose:clamp') but still nothing. In my test, I'm relying on an Identify of $image_a after a compose (which returns values over quantum value) and looking at channel max values. (See...
by miket
2017-03-31T01:11:32-07:00
Forum: Bugs
Topic: Possible bug compose:clamp=off Perl Magick
Replies: 13
Views: 5691

Re: Possible bug compose:clamp=off Perl Magick

Snibgo - Added these to my tests - to no avail :( #$image_a->Set(option=>'compose:clamp=false'); #$image_a->Set(option=>'compose:clamp=False'); #$image_a->Set(option=>'compose:clamp=0'); #$image_a->Set(option=>'compose:clamp=1'); # $image_a->Set(option=>'compose:clamp=True'); # $image_a->Set('compos...
by miket
2017-03-31T01:00:47-07:00
Forum: Bugs
Topic: Possible bug compose:clamp=off Perl Magick
Replies: 13
Views: 5691

Re: Possible bug compose:clamp=off Perl Magick

You should set an artifact instead of an option. Not sure how you can do that in Perl though. Me neither !!!!! How would you call that in magic.net? I could then search for it in the Perl Q16HDRI.xs file. The Set option command in perl calls DefineImageOption, which is - DefineImageOption DefineIma...
by miket
2017-03-30T23:31:41-07:00
Forum: Bugs
Topic: Possible bug compose:clamp=off Perl Magick
Replies: 13
Views: 5691

Possible bug compose:clamp=off Perl Magick

Hi, Version: ImageMagick 7.0.5-3 Q16 x86_64 2017-03-16 HDR I'm still having issues getting perl magick to switch off the compose:clamp option. I've tried a number of options, to no avail. Using $image->Set(option=>"compose:clamp=off") should, I think, work since that option in PM calls DefineImageOp...
by miket
2017-03-23T04:25:45-07:00
Forum: Bugs
Topic: Potential bugs/enhancements related to icc profile use
Replies: 3
Views: 1636

Re: Potential bugs/enhancements related to icc profile use

Thanks Snibgo, On Issue one - your response was my understanding as well. However I am getting DIFFERENT output results when using the perl equivalent of -colorspace when the same file has an icc profile and when it does not have an icc profile. You would expect the result to be the same, but they ...
by miket
2017-03-22T22:25:20-07:00
Forum: Bugs
Topic: NaN in XYZ->xyY conversion
Replies: 11
Views: 2980

Re: NaN in XYZ->xyY conversion

Thanks folks. This is working for me now :)