Background color loss from EPS to other formats

[Carter J]

Hi All,

We have few EPS images and while converting them to any other format say for ex: JPEG the background color is lost and is showing up white.

Attached is one eps image which has a back ground and in the other screenshot we can see after converting it to JPEG the back ground is showing up white

Any insight ?


https://www.dropbox.com/s/mdpcm4jc1wkbx ... psFile.eps
https://www.dropbox.com/s/lbe1b43bo6w1931/EpsToJPG.jpg

Version: ImageMagick 6.8.7-4 2013-10-26

Thanks

[snibgo]

If you "identify -verbose SampleEpsFile.eps" you will see it has a clipping path, which IM ignores by default. See http://www.imagemagick.org/script/comma ... s.php#clip

However, when I try for example "convert SampleEpsFile.eps -clip -negate t.png" I get:

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convert.exe: image size differs `sampleepsfile.eps' @ error/image.c/SetImageClipMask/2398.

[Carter J]

Hi snibgo,

Thanks for reply.

I tried convert SampleEpsFile.eps -clip -negate t.png, and got below image without any warnings or errors.

https://www.dropbox.com/s/de6kjz8x82uxlzr/t.png

Please suggest how can I get desired output without any background color loss.

Thanks,

[Carter J]

Guys,
Any workaround on this would be of great help, as we are stuck with this kind of images.

[fmw42]

I am not sure what you mean by loss of background. All I see is a bit of aliasing on a white background. Your input eps file also seems to display with a white background. You can remove the aliasing by using supersampling

This does that by a factor of 4 (density 4*72=288 and resize 25%) while converting to sRGB jpg so that viewers do not have trouble with cmyk jpgs.

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convert -density 288 SampleEpsFile.eps -profile /Users/fred/images/Profiles/USWebCoatedSWOP.icc -profile /Users/fred/images/Profiles/sRGB.icc -resize 25% SampleEpsFile2.jpg

If you want more antialiasing try using -density 576 and -resize 12.5%, ie factor of 8 in supersampling. You will have to locate your profiles on your system or download them. But I believe there is a folder in the IM download that has profiles.

[fmw42]

Note that jpg does not preserve transparency. So you get a black background, but when it is converted to sRGB it turns white.

Also png does not support cmyk.

This works just fine for me (IM 6.8.8.4 Q16 Mac OSX Snow Leopard with ghostscript 9.06) to keep the transparent background in a png, by converting to sRGB. The best way is to use profiles (and supersampling) as

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convert -density 288 SampleEpsFile.eps -profile /Users/fred/images/Profiles/USWebCoatedSWOP.icc -profile /Users/fred/images/Profiles/sRGB.icc -resize 25% SampleEpsFile2.png

But a quick convert works in this way, though has aliasing artifacts

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convert -colorspace sRGB SampleEpsFile.eps SampleEpsFile3.png

but has aliasing artifacts, so again use supersampling

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convert -colorspace sRGB -density 288 SampleEpsFile.eps -resize 25% SampleEpsFile4.png