eps to jpg degradations

[Sonyk]

Hello, guys. When converting from EPS in jpg edges become blurred. What settings need to change to make the edges as in the EPS (original)

should be something like the picture on the left


original file EPS http://rghost.ru/75mjRSnzB

[fmw42]

JPG is a lossy compression and does a lousy job in flat color regions. You would be better off with these type images going to PNG8 or GIF most likely.

You also do not say what version of Imagemagick and platform you are using and what versions of Ghostscript and libjpeg. You might want to upgrade any or all of them.

[Sonyk]

JPG is a lossy compression and does a lousy job in flat color regions. You would be better off with these type images going to PNG8 or GIF most likely.

You also do not say what version of Imagemagick and platform you are using and what versions of Ghostscript and libjpeg. You might want to upgrade any or all of them.

Version: ImageMagick 6.9.0-10 Q8 x64
Version: gs916w64

C:\Users\Sonyk>convert -resize "5000x5000" -colorspace RGB -quality 100 86d1e.eps 2.jpg

[fmw42]

convert -resize "5000x5000" -colorspace RGB -quality 100 86d1e.eps 2.jpg

Correct syntax is to put the input image after convert, though it may not make a difference in IM 6.

Also why are you converting to -colorspace RGB rather than -colorspace sRGB?

You do not say what version of libjpeg you are using?

See the listing from

convert -list format

Mine shows:

JPEG* JPEG rw- Joint Photographic Experts Group JFIF format (90)
JPG* JPEG rw- Joint Photographic Experts Group JFIF format (90)


If you EPS is CMYK then the command should be

Code: Select all

convert -colorspace sRGB 86d1e.eps -resize "5000x5000" -quality 100 2.jpg

if the EPS is sRGB already (RGB), then just do

Code: Select all

convert 86d1e.eps -resize "5000x5000" -quality 100 2.jpg

But I still think you should not use JPG for such images.

Also see http://www.imagemagick.org/Usage/basics/#why

[snibgo]

As Fred says, don't use JPG.

Also, don't rasterize it then resize it. Instead, use "-density" to rasterize directly at the required size.

Code: Select all

convert -density 360 86d1e.eps x.png

[fmw42]

I forgot to add that you might get better color fidelity using profiles rather than -colorspace

[Sonyk]

Thanks for the help guys.
snibgo, How do you calculate the value of 360?

[Sonyk]

magick value 72...
72*5 = 360

[snibgo]

Yes, that's it. The default density is 72. This creates a width of 1000. But you want a width of 5000. 72*5000/1000 = 360.