Hmm, I got a huge online-database of jpeg images. Can this -strip be used in PerlMagick too? Please say yes. :)
- Mark > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > Rebecca York > Sent: dinsdag 13 februari 2007 15:27 > To: [email protected] > Subject: RE: [magick-users] JPEG Compression - Image Sizes > > -strip worked a charm thanks. > > -----Original Message----- > From: Ludovic Levesque [mailto:[EMAIL PROTECTED] > Sent: 2007-02-13 14:25 > To: Rebecca York > Cc: [email protected] > Subject: Re: [magick-users] JPEG Compression - Image Sizes > > > Hi, > > you must drop the profile of the image. > Number of lines of the output of 'identify -verbose': > /tmp$ identify -verbose ImageMagick_11Qual_19K.jpg | wc -l > 932 > /tmp$ identify -verbose LeadTools_Save_66Qual_19K.jpg | wc -l > 49 > > You can add -strip to your convert command. > > Ludovic > > > On 2/13/07, Rebecca York <[EMAIL PROTECTED]> wrote: > > I have downloaded the "ImageMagickObject (COM+)" object > from the website, > > and have been attempting to get it to resize the Images to the same > quality > > and size that our Photoshop scripts do. > > > > To save space in the email I've put the example images on a > website (about > > 350k?) > > http://girlzone.me.uk/misc/ImageMagick/ImageMagick.html > > > > The source image is 1013x524 (Figure 5) and the target size > is 391x202 > > (Figure 1). > > > > > > In the below url, Figure 1 demonstrates the Image saved down by our > > photoshop scripts (which we want to replace). > > Figure 2 demonstrates the output from Image Magick saved to > JPEG at 100% > > quality (98K) > > > > Now, using ImageMagick, to get the file down to the same size as the > > photoshop image (19K) I have to set the JPEG quality to 11%, > > however this results in extreme jpeg compression noise (see > figure 3) > > > > We're also testing another COM tool we have called > "LeadTools", however > the > > resizing quality of this is poor - so we have decided > aganist using this > as > > it would require more licences. > > > > But, if the 100% Quality image generated by ImageMagick is opened by > > LeadTools, and resaved at 66% Quality the output file > (Figure 4) is 19K > and > > has no more jpeg compression than the Photoshop image. > > > > Saving the file at 66% Quality in ImageMagick results in a 30K file. > > > > The am using the following call to do the resize > > > > imageMagick.Convert "Input.jpg", "-filter", "Quadratic", "-resize", > > "391x202!", "-sharpen", "1x0.75", "-unsharp", "1x0.25", > "-quality", "100", > > "-comment", "%f", "-sampling-factor", "2x1", "-compress", "JPEG", > > "Output.jpg" > > > > > > I'm guessing I've missed a command somewhere, but couldn't > find anything > > obvious in the command list. > > > > > > > > Can anyone shed any light as to why the ImageMagick jpegs > are so bloated > in > > size? > > > > > > Regards, > > > > > > > > Becky. > > _______________________________________________ > > Magick-users mailing list > > [email protected] > > http://studio.imagemagick.org/mailman/listinfo/magick-users > > > _______________________________________________ > Magick-users mailing list > [email protected] > http://studio.imagemagick.org/mailman/listinfo/magick-users > _______________________________________________ Magick-users mailing list [email protected] http://studio.imagemagick.org/mailman/listinfo/magick-users
