Legacy ImageMagick Discussions Archive

Despite the fact that I still can not have the "HDRI" option active in the -version output ... I compiled the libs and programs with 64 as Max value ... How that differs from the "full HDRI" option ? How can test if the 64 Max alue is really used ? Is there any "simple test&...

After some fiddling with VS 2005 I got the imagemagick source package fully compiled but ... Following the intructions I am not able to activate the HDRI mode ... If I try "identify -version " I only get this : Version: ImageMagick 6.6.4-5 2010-09-21 Q32 http://www.imagemagick.org Copyrigh...

After some fiddling with VS 2005 I got the imagemagick source package fully compiled but ... Following the intructions I am not able to activate the HDRI mode ... If I try "identify -version " I only get this : Version: ImageMagick 6.6.4-5 2010-09-21 Q32 http://www.imagemagick.org Copyrigh...

Would it be possible to have a "generic" HDRI (32Q) pre-compiled Win32 imagemagick build ?
Or am I missing something ?
besides activating such specific a variable in the headers ?


P.S. :
I will try to build my own version as soon as I get VS installed ...

Short question :
How do I activate the HDRI option
prior to compile the source in WINDOWS ?

After some more tests I realized that the CPU time to perform the histogram operation are higher than I antecipated ... But now I wonder ... Why does the resulting GIF file have such a big size ? in a 2688x1768 image I get an 9Mb or 10Mb GIF file ... If I read the GIF file and resave it I get a 5Kb ...

AFter some tests I still do not have what I needed ... Depending on the file "-auto-level" works as it supposed ... With no clipping ... If I try "-contrast-stretch" with small ammounts like 0.001% I get color posterization (even with IM 16) ... The "-linear-stretch" do...

Hi ... Only recently I get a strange behaviour with calling the "histogram:" operator .... convert sdim004.jpg histogram:histogram.gif Gives me full CPU ocuppation (I have a dual core) so I get a single core occupied The image is 2688x1792 8 bit JPG The strange fact is that It works in the...

I am using the "convert -auto-level" option with success ... Nonetheless is there any way to define "manually" the histogram value ? For instance : -auto-level gives me : low 5: high 205 ( IM 8) But I needed low 0: high 215 ... Is it possible to define those values manually ? Tha...

Just to report that after some trials (mannualy with color-matrix ) I have managed to achieve a better color matrix (without the magenta highlights clipping) for the RAW SD14 ... -- Matrix 8 correct 5.5 -3.5 0.95 -4.1 7.5 -2.1 2.7 -8.0 8.2 So now I only have to "learn" how to reduce the ch...

After some fiddling with -contrast-stretch option I realized that even with values 0 it clips some information specially in the highlights... I tried using negative values but with no success ... let me explain my idea.... i have a 16bits raw image where most of the information ( usually falls into ...

Hi ... I suppose that using the "-color-matrix" option in convert would be your answer to your problem... As the web usage docs referer it it could e a way to solve your problem ... Something in like : convert -color-matrix " 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0" imagein imageout Alth...

in a previous post I saw this : Unfortunately, IM does not allow negative values. But I have submitted a bug report on this. Does this problem still being investigated ? What is the behaviour of the negative values presented in the matrix ? Is the signal being ignored ? Or is the value accepted as 0...

Hi ... After some more digging in Internet I have found a partial color correction matrix for my previous problem so I am using -recolor to solve my colour problems ... http://sigmauserforum.com/forum/showthread.php?p=2776 6.8192 -4.2780 0.5284 -5.3869 9.4475 -3.3093 2.7067 -8.4825 8.2162 Although v...

Hi ... thanks for the fast update .... Dave coffin did answered reporting that the FOVEON sensor does report some colour but still requires some complex (obfuscated inside X3F file ) matrix operations to get the correct colors ... I will try your latest option and report as soon as I can ... -------...