Legacy ImageMagick Discussions Archive

thanks snibgo I try also with only one thread (i m inside an web ISAPI app) so instead of doing : THREAD 1 while true do _ NewMagickWand _ MagickReadImage _ MagickResizeImage _ DestroyMagickWand end THREAD 2 while true do _ NewMagickWand _ MagickReadImage _ MagickResizeImage _ DestroyMagickWand end ...

@snibgo I think i found what i will call a bug in ImageMagick On my computer I have 4 core and 8 Logical processors in the default policy.xml the row <!-- <policy domain="resource" name="thread" value="4"/> --> is commented, but when i do convert -list resource Resource...

Thanks snibgo, i m doing the "block" of theses operations in parallel like below : THREAD 1 while true do _ NewMagickWand _ MagickReadImage _ MagickResizeImage _ DestroyMagickWand end THREAD 2 while true do _ NewMagickWand _ MagickReadImage _ MagickResizeImage _ DestroyMagickWand end THREA...

I have a multi thread app (8 threads) on a multi core machine (8 cpu). each thread is doing in parallel NewMagickWand MagickReadImage MagickResizeImage DestroyMagickWand but imageMagick use only ONE CPU instead of 8 ! Even if I setup each thread to use a dedicated CPU with SetThreadAffinityMask Imag...

I need to create several variation of a picture in several resolutions like : original size = 2048x2048 1280x1280 800x800 640x640 480x480 360x360 240x240 150x150 100x100 Actually i always resize each variation from the original size like this : 2048x2048 => 1280x1280 2048x2048 => 800x800 2048x2048 =...

@snibgo ... exact i just try it so no need to call MagickSetImageColorspace

thanks !

but if i convert say a CMYK image with icc profile to sRGB icc profile, then do i need to keep the image color space in CMYK ?

thanks i will do like this ...

@snibgo, i have another question, do you know what is MagickSetImageColorspace ? i m a little lost to understand the difference with Icc profile do i need to worry about image color space ?

by the way doing this we must absolutely not use the sRGB.icc profile located in imagemagick, It's produce very different and completely washed out image when the image is showed on android or non color managed software (who ignore the icc)

thanks snibgo ! so i decide to store the image in the server in 2 variants: one with icc profile given at the upload time (even if it's sRGB as their is many sRGB variant) and one converted to the sRGB.icc profile (and to with i will strip of the sRGB icc profile as android will simply not read it) ...

Do you mean android simply ignores the ICC profile, or that it refuses to display the image? yes android simply ignore icc profile :( it's show the image like if no embed icc profile was present If it simply ignores the profile and assumes the image is sRGB, then embedding an sRGB profile is harmle...

thanks snibgo, i start to see a little better now :) Last question, android device < 0 can't handle icc profile (that a shame). What would you suggest to me ? Store the picture on the server in both variant, I mean with icc profile embed and without icc profile embed where i first make the conversio...

thanks snibgo ! I discover i don't know too much about icc :( maybe i can explain what i m worry : I have a webserver that store image (like instagram or 500px). some of theses image come from iphone 7+ and have an embed icc profile (P3). but most of the android device have no color management and s...

Before to export my image to the web, i want to convert them to sRGB and then remove the sRGB profile from the image (to reduce it's size as sRGB is the default profile to use if their is no embed icc profile). I was thinking that their is only one sRGB icc profile but i discover their is many varia...