Legacy ImageMagick Discussions Archive

I've tried various commands and cannot get the DPI set correctly. I've been at this for 6 hours or so. No matter what I try, when I run identify, it tells me the image is 72 dpi.

"C:\Program Files\ImageMagick-6.6.9-Q16\convert.exe" C:\temp\HotFolder\Export\test.jpg -units PixelsPerInch -density 300 ept:C:\temp\HotFolder\Import\Itest.eps

I also tried moving density first based on a forum that I read, but still get the same results.

C:\Program Files\ImageMagick-6.6.9-Q16>identify -verbose C:\temp\HotFolder\Impor
t\Itest.eps
Image: C:\temp\HotFolder\Import\Itest.eps
Format: EPT (Encapsulated PostScript with TIFF preview)
Class: DirectClass
Geometry: 86x57+0+0
Resolution: 72x72
Print size: 1.19444x0.791667
Units: Undefined
Type: TrueColorMatte
Endianess: Undefined
Colorspace: RGB
Depth: 16/8-bit
Channel depth:
red: 8-bit
green: 8-bit
blue: 8-bit
alpha: 1-bit

The original file is:
C:\Program Files\ImageMagick-6.6.9-Q16>identify -verbose C:\temp\HotFolder\Expor
t\test.jpg
Image: C:\temp\HotFolder\Export\test.jpg
Format: JPEG (Joint Photographic Experts Group JFIF format)
Class: DirectClass
Geometry: 358x239+0+0
Resolution: 300x300
Print size: 1.19333x0.796667
Units: PixelsPerInch
Type: TrueColor
Endianess: Undefined
Colorspace: RGB
Depth: 8-bit
Channel depth:
red: 8-bit
green: 8-bit
blue: 8-bit

I am no expert on this, but it seems that you are converting a jpg to an imbedded jpg in an eps (vector) format. Vector formats by themselves don't have a density until you specify it is to be printed or convert to raster. The jpg imbedded in the eps may have the correct density, but I don't know how you would extract that.

Some one more knowledgeable than I may have to fill in more detail or correct my understanding.

Are you saying you don't think a JPG can be converted to an EPS with a TIFF preview at 300 DPI using IM?

flawless wrote:Are you saying you don't think a JPG can be converted to an EPS with a TIFF preview at 300 DPI using IM?

I am simply saying that I do not think you can convert an image into a vector in IM. You can only imbed the image into the vector eps as an imbedded image. I do not know anything about IM creating a tiff preview image while doing the conversion. I am not an expert on eps.

So someone more experienced with eps will really need to respond about this, if you want a definitive answer.

see
http://www.imagemagick.org/Usage/formats/#vector
http://www.imagemagick.org/Usage/formats/#ps