Search found 60 matches

by miket
2017-02-23T10:24:53-07:00
Forum: Bugs
Topic: NaN in XYZ->xyY conversion
Replies: 11
Views: 8014

Re: NaN in XYZ->xyY conversion

I too tried to replicate the issue by command line (which I very rarely use) and could not replicate what I'm seeing using Perl Magic.

Will post an image & Perl code shortly to illustrate the issue.

Thanks

Mike
by miket
2017-02-23T04:08:54-07:00
Forum: Bugs
Topic: NaN in XYZ->xyY conversion
Replies: 11
Views: 8014

NaN in XYZ->xyY conversion

I'm sure this is NOT a bug, but simply the way the conversion is currently implemented :) (please feel free to relocate this post if you think appropriate). Version: ImageMagick 7.0.5-0 Q16 x86_64 + Perl Magic + Linux When converting from XYZ to xyY any pixels with X+Y+Z=0 values are converted to Na...
by miket
2017-02-23T02:58:34-07:00
Forum: Users
Topic: is this histogram output correct?
Replies: 5
Views: 4189

Re: is this histogram output correct?

........ adding a channel selector would also be really useful :)

Mike
by miket
2017-02-23T02:52:33-07:00
Forum: Users
Topic: is this histogram output correct?
Replies: 5
Views: 4189

Re: is this histogram output correct?

I'm running into similar issues (early days yet ;) ). Am I correct in assuming (in Perl Magic) that once an HRD image is read in, it is not sufficient just to change the magick file number to a PNG to force the data to integer values, but the file would have to be written and re-read for the convers...
by miket
2017-02-23T02:16:48-07:00
Forum: Digital Image Processing
Topic: Display HDRi images on UHDR TV
Replies: 2
Views: 29480

Display HDRi images on UHDR TV

Given the advances in TV technology, there are now some glorious (and affordable) TV's wich offer both a high dynamic range and a wide color gamut. Those of us who dabble with HDRi images might be able to display these without having to compress the gamut and DR through tone-mapping. Has anybody wor...
by miket
2017-02-23T01:59:18-07:00
Forum: PerlMagick
Topic: PerlMagick colorspaceset
Replies: 6
Views: 18819

Re: PerlMagick colorspaceset

Just an observation: When applying ->Set(colorspace=>"XYZ") to an RGB file (or ->Colorspace(colorspace=>"XYZ") or using "xyY") and THEN applying ->Set(alpha=>"On") an extra 4th channel (in addition to the XYZ & Alpha channels) appears to be generated and identified by Identify. Is this behavior expe...
by miket
2017-02-23T01:58:11-07:00
Forum: PerlMagick
Topic: PerlMagick colorspaceset
Replies: 6
Views: 18819

Re: PerlMagick colorspaceset

Hi, Thanks for this upgrade! It is now working perfectly for me. For those following this post the ->Set(colorspace=>"-------") now no longer converts the file to the new colorspace, but only sets the colorspace flag. The new command ->Colorspace(colorspace=>"-----") is the one to use for converting...
by miket
2017-02-23T01:35:35-07:00
Forum: Bugs
Topic: Problems with Image Statistics (fx:maxima etc.)
Replies: 33
Views: 19749

Re: Problems with Image Statistics (fx:maxima etc.)

Hi Guys, I've now installed v7.0.5-0. On the plus side: The Statistics() function in Perl Magik is now functioning correctly - Many thanks. fx:maxima minima and mean now give the correct values - Many thanks. However, when running the same PERL script as my initial posting on v7.0.5-0: The fx:mean.r...
by miket
2017-02-14T11:13:22-07:00
Forum: Bugs
Topic: Problems with Image Statistics (fx:maxima etc.)
Replies: 33
Views: 19749

Re: Problems with Image Statistics (fx:maxima etc.)

Thanks. Missed the beta version, so will download/install tonight and respond tomorrow.
by miket
2017-02-14T09:26:22-07:00
Forum: Bugs
Topic: Problems with Image Statistics (fx:maxima etc.)
Replies: 33
Views: 19749

Re: Problems with Image Statistics (fx:maxima etc.)

Hmmmm..... Having updated to 7.4-8 I still appear to be having some issues (with some problems fixed). Before I respond, could you let me know if it is best to feedback on this thread, or to create a new thread?
by miket
2017-02-14T07:55:42-07:00
Forum: Bugs
Topic: Problems with Image Statistics (fx:maxima etc.)
Replies: 33
Views: 19749

Re: Problems with Image Statistics (fx:maxima etc.)

Thanks for the feedback Fred :). I'll update my IM and feedback wit any issues.

Mike
by miket
2017-02-09T05:33:10-07:00
Forum: Bugs
Topic: Problems with Image Statistics (fx:maxima etc.)
Replies: 33
Views: 19749

Re: Problems with Image Statistics (fx:maxima etc.)

Thanks guys (and gals). Great service & much appreciated :)
by miket
2017-02-09T04:35:35-07:00
Forum: Bugs
Topic: Problems with Image Statistics (fx:maxima etc.)
Replies: 33
Views: 19749

Problems with Image Statistics (fx:maxima etc.)

I'm running on IM 7.0.2-4 Q16 x86_64, using PerlMagick and getting some strange numbers from the fx:mean, fx:maxima, functions. These (I suspect) may be issues with the main IM program (rather than Perl Magick). I'm also getting some strange numbers from the Perl Magick Statistics() method. To illus...
by miket
2016-12-05T09:05:58-07:00
Forum: PerlMagick
Topic: PerlMagick colorspaceset
Replies: 6
Views: 18819

Re: PerlMagick colorspaceset

Thanks Magic, Looking forward to it. I've been testing my home-brew function this afternoon, and it appears to work reliably. In terms of naming the function: Option 1 Starting with a blank piece of paper you would use $im->Colorspace(colorspace=>'XYZ') to mimic -colorspace XYZ and $im->Set(colorspa...
by miket
2016-12-05T07:29:20-07:00
Forum: PerlMagick
Topic: Perl Magick -set colorspace XYZ & -colorspace XYZ equivalents
Replies: 6
Views: 16405

Re: Perl Magick -set colorspace XYZ & -colorspace XYZ equivalents

Just given that a go, with no luck :( . Have responded on that thread.

Mike