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: magick-users-bounces imagemagick.org
> [mailto:magick-users-bouncesimagemagick.org] On Behalf
Of
> Rebecca York
> Sent: dinsdag 13 februari 2007 15:27
> To: magick-usersimagemagick.org
> Subject: RE: [magick-users] JPEG Compression - Image
Sizes
>
> -strip worked a charm thanks.
>
> -----Original Message-----
> From: Ludovic Levesque [mailto:luddicgmail.com]
> Sent: 2007-02-13 14:25
> To: Rebecca York
> Cc: magick-usersimagemagick.org
> 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 <Rebecca.York2ndbyte.com> 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
> > Magick-usersimagemagick.org
> > http://studio.imagemagick.org/mailman/listinfo/magick
-users
> >
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