CMYK PDF to sRGB JPG
Posted: 2012-05-23T05:25:13-07:00
Hi,
I've been googling for a couple of days now and so far no result, I would greatly appreciate some help with this.
I'm trying to convert CMYK PDFs into an sRGB images. My problem is a faint yellow shows up in the background of images from the PDF as well as resulting JPG colors are not matching well enough.
Version info:
In PDF: http://dl.dropbox.com/u/45955/in.pdf
Out JPG example: http://dl.dropbox.com/u/45955/out.jpg
Color profiles I used I got from Adobe web site.
Commands I have tried among others:
Result: Get this error when opening image in Photoshop: The embedded ICC profile cannot be used because the ICC profile is invalid. Ignoring the profile.
Result: Image is sRGB and color conversion is not the best, there is also faint yellow background under image (probably white did not convert well?). http://dl.dropbox.com/u/45955/out.jpg I have also tried USWebUncoated.icc, better colors overall but still the faint yellow background.
PDF information:
Thank you!
I've been googling for a couple of days now and so far no result, I would greatly appreciate some help with this.
I'm trying to convert CMYK PDFs into an sRGB images. My problem is a faint yellow shows up in the background of images from the PDF as well as resulting JPG colors are not matching well enough.
Version info:
GPL Ghostscript 9.02 (2011-03-30)
Sample data:ImageMagick 6.7.7-0 2012-05-23 Q16
In PDF: http://dl.dropbox.com/u/45955/in.pdf
Out JPG example: http://dl.dropbox.com/u/45955/out.jpg
Color profiles I used I got from Adobe web site.
Commands I have tried among others:
Code: Select all
convert in.pdf -profile sRGB.icm out.jpgCode: Select all
convert -profile USWebCoatedSWOP.icc in.pdf -profile sRGB.icm out.jpgPDF information:
Code: Select all
identify -verbose in.pdf
Image: in.pdf
Format: PDF (Portable Document Format)
Class: DirectClass
Geometry: 652x899+0+0
Resolution: 72x72
Print size: 9.05556x12.4861
Units: Undefined
Type: ColorSeparation
Base type: ColorSeparation
Endianess: Undefined
Colorspace: CMYK
Depth: 16/8-bit
Channel depth:
cyan: 8-bit
magenta: 8-bit
yellow: 8-bit
black: 8-bit
Channel statistics:
Cyan:
min: 0 (0)
max: 49601 (0.756863)
mean: 1143.59 (0.0174501)
standard deviation: 5736.15 (0.0875281)
kurtosis: 39.136
skewness: 6.17317
Magenta:
min: 0 (0)
max: 30583 (0.466667)
mean: 571.142 (0.00871507)
standard deviation: 2291.84 (0.0349713)
kurtosis: 36.2905
skewness: 5.54346
Yellow:
min: 0 (0)
max: 65535 (1)
mean: 1635.46 (0.0249555)
standard deviation: 7107.55 (0.108454)
kurtosis: 43.701
skewness: 6.50586
Black:
min: 0 (0)
max: 6682 (0.101961)
mean: 7.07931 (0.000108023)
standard deviation: 70.7784 (0.00108001)
kurtosis: 832.521
skewness: 19.9503
Image statistics:
Overall:
min: 0 (0)
max: 65535 (1)
mean: 839.318 (0.0128072)
standard deviation: 4708.46 (0.0718465)
kurtosis: 85.9549
skewness: 8.89549
Total ink density: 202%
Rendering intent: Undefined
Interlace: None
Background color: cmyk(255,255,255,0)
Border color: cmyk(223,223,223,0)
Matte color: cmyk(189,189,189,0)
Transparent color: cmyk(0,0,0,0)
Compose: Over
Page geometry: 652x899+0+0
Dispose: Undefined
Iterations: 0
Compression: Undefined
Orientation: Undefined
Properties:
date:create: 2012-05-23T17:05:16+06:00
date:modify: 2012-05-23T17:05:16+06:00
pdf:HiResBoundingBox: 652x899+0+0
pdf:Version: PDF-1.6
signature: 2dea92ab09df4e2a80bcb9d9a07c2d32fc1ffb46aaeb29bdc97b76b9a91b21fd
Artifacts:
verbose: true
Tainted: False
Filesize: 2.345MBB
Number pixels: 586KB
Pixels per second: 29.31MB
User time: 0.010u
Elapsed time: 0:01.019
Version: ImageMagick 6.7.1-7 2011-08-27 Q16 http://www.imagemagick.org
