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POImageMagick batch resizing performance
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  1. POImageMagick batch resizing performance
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    copied!<pre> convert \ original.jpg \ -quality 85 \ -colorspace rgb \ -profile /var/tmp/sRGB.icm \ -strip \ -profile /var/tmp/sRGB.icm \ -filter Lanczos \ -write mpr:17JPCONV1-original \ +delete \ mpr:17JPCONV1-original -crop '3000x2001+0+491' -resize '190x126!>' -write thumbWide.jpg +delete \ mpr:17JPCONV1-original -crop '2981x2983+8+0' -resize '75x75!>' -write thumbStandard.jpg +delete \ mpr:17JPCONV1-original -crop '3000x2983+0+0' -resize '163x163!>' -write hpSmall.jpg +delete \ mpr:17JPCONV1-original -crop '3000x2983+0+0' -resize '1024x1019!>' -write jumbo.jpg +delete \ mpr:17JPCONV1-original -crop '3000x2983+0+0' -resize '190x189!>' -write articleInline.jpg +delete \ mpr:17JPCONV1-original -crop '3000x2983+0+0' -resize '2048x2037!>' -write superJumbo.jpg +delete \ mpr:17JPCONV1-original -crop '3000x2983+0+0' -resize '592x589!>' -write tmagArticle.jpg +delete \ mpr:17JPCONV1-original -crop '3000x2983+0+0' -resize '3000x2983!>' -write popup.jpg +delete \ mpr:17JPCONV1-original -crop '2981x2983+8+0' -resize '640x640!>' -write square640.jpg +delete \ mpr:17JPCONV1-original -crop '3000x1689+0+647' -resize '3000x1688!>' -write videoSmall.jpg +delete \ mpr:17JPCONV1-original -crop '3000x2983+0+0' -resize '503x500!>' -write slide.jpg +delete \ mpr:17JPCONV1-original -crop '2981x2983+8+0' -resize '151x151!>' -write moth.jpg +delete \ mpr:17JPCONV1-original -crop '3000x2001+0+491' -resize '337x225!>' -write hpMedium.jpg +delete \ mpr:17JPCONV1-original -crop '3000x2001+0+491' -resize '395x264!>' -write sfSpan.jpg +delete \ mpr:17JPCONV1-original -crop '3000x1689+0+647' -resize '3000x1688!>' -write videoLarge.jpg +delete \ mpr:17JPCONV1-original -crop '3000x1689+0+647' -resize '511x288!>' -write hpLarge.jpg +delete \ mpr:17JPCONV1-original -crop '2981x2983+8+0' -resize '320x320!>' -write square320.jpg +delete \ mpr:17JPCONV1-original -crop '3000x1689+0+647' -resize '600x338!>' -write articleLarge.jpg +delete \ mpr:17JPCONV1-original -crop '3000x2001+0+491' -resize '3000x2000!>' -write videoThumb.jpg +delete \ mpr:17JPCONV1-original -crop '2981x2983+8+0' -resize '150x150!>' -write thumbLarge.jpg +delete \ mpr:17JPCONV1-original -crop '3000x2983+0+0' -resize '533x530!>' -write blog533.jpg +delete \ mpr:17JPCONV1-original -crop '3000x2983+0+0' -resize '151x151!>' -write blogSmallInline.jpg +delete \ mpr:17JPCONV1-original -crop '3000x2983+0+0' -resize '362x360!>' -write tmagSF.jpg +delete \ mpr:17JPCONV1-original -crop '2981x2983+8+0' -resize '190x190!>' -write filmstrip.jpg +delete \ mpr:17JPCONV1-original -crop '3000x2983+0+0' -resize '480x478!>' -write blog480.jpg +delete \ mpr:17JPCONV1-original -crop '3000x2983+0+0' -resize '427x425!>' -write blog427.jpg +delete \ mpr:17JPCONV1-original -crop '2981x2983+8+0' -resize '50x50!>' -write blogSmallThumb.jpg +delete \ mpr:17JPCONV1-original -crop '3000x1401+0+791' -resize '151x70!>' miniMoth.jpg; </pre> <p>I am trying to generate ~30 crops from an original using one command (using one command is significantly faster than using a single command for each crop). However, this is taking quite a while (~30s) to finish. Any suggestions to speed this up? Can the resize command take advantage of GPUs via OpenCL?</p> <p>Update:</p> <ul> <li>Using -thumbnail instead of -resize improves things</li> <li>(Thanks to @A R for the tip) Compiling ImageMagick with libjpeg-turbo also improves times by 20%</li> </ul>
 

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