.AI CMYK transparency error

[ayrton.ricardo]

Hi guys,

I'm trying to do:

• Convert a .AI file in a .PNG file;

• Merge a .AI file with a PNG file;

In both cases the transparency isn't available, but when I use the convert command the error doesn't appear.

PHP CODE:

Code: Select all

$file1 = 'a.ai';
$out = 'c.png';

// read page 1
$im = new \Imagick();
$im->readImage($file1);
$im->setImageBackgroundColor(new \ImagickPixel('transparent'));
$im->setBackgroundColor(new \ImagickPixel('transparent'));
$im->setColorspace(\Imagick::COLORSPACE_SRGB);
$im->transformImageColorspace(\Imagick::COLORSPACE_SRGB);
$im->writeImages($out, true);
$im->clear();
$im->destroy();

Source: a.ai
Result: c.png

Command:

Code: Select all

convert -density 300 -colorspace srgb a.ai c2.png

Source: a.ai
Result: c2.png

This error only appears when the profile of colors is CMYK, when I use RGB the error doesn't appear.

Anyone know how to fix it?

[snibgo]

In PHP, try "setImageColorspace". See http://php.net/manual/en/imagick.setimagecolorspace.php

[ayrton.ricardo]

I used this option before, I tried again and the result:

CODE:

Code: Select all

// read page 1
$im = new \Imagick();
$im->readImage($file1);
$im->setImageBackgroundColor(new \ImagickPixel('transparent'));
$im->setBackgroundColor(new \ImagickPixel('transparent'));
$im->setColorspace(\Imagick::COLORSPACE_SRGB);
$im->setImageColorspace(\Imagick::COLORSPACE_SRGB); // ALTERATION
$im->transformImageColorspace(\Imagick::COLORSPACE_SRGB);
$im->writeImages($out, true);
$im->clear();
$im->destroy();

Result: c.png

I used the function `$im->negateImage(false, Imagick::CHANNEL_ALL);` but still without transparency background.

[fmw42]

Your posted images have been converted from .ai to .pdf. Please post to some place that does not change the image format or zip the files first.

Try setting the colorspace first and the background color before reading in the input AI

Code: Select all

// read page 1
$im = new \Imagick();
$im->setColorspace(\Imagick::COLORSPACE_SRGB);
$im->setBackgroundColor(new \ImagickPixel('transparent'));
$im->readImage($file1);
$im->writeImages($out, true);
$im->clear();
$im->destroy();

But I think you also need to specify the format for the output file.

[ayrton.ricardo]

I don't know how exactly that format works, but here has another .ai example: https://1drv.ms/u/s!AmISJy6AbeQ7hPIziQPfQ2dyL2XYeg

[fmw42]

I don't know how exactly that format works, but here has another .ai example: https://1drv.ms/u/s!AmISJy6AbeQ7hPIziQPfQ2dyL2XYeg

That also has been changed to PDF. You must find another image hosting service or zip the AI file first before uploading.

[ayrton.ricardo]

I saved a file by Adobe Illustrator and zipped it: https://www.dropbox.com/s/qrzx51g8tfrn5 ... i.zip?dl=0

[fmw42]

This command line works fine for me.

Code: Select all

convert -colorspace sRGB -background none logo-teste.ai test.png

You just need to find the equivalent Imagick commands and do them in the same order as in my command.

[ayrton.ricardo]

This command line works fine for me.

Code: Select all

convert -colorspace sRGB -background none logo-teste.ai test.png

You just need to find the equivalent Imagick commands and do them in the same order as in my command.

The command work's fine as expected, the problem is the PHP code.

[fmw42]

Sorry I do not know Imagick that well.

[ayrton.ricardo]

Hi,

After update Ghostscript the problem was solved to ".ai" file, but eps still with problem if I use shadow on file.

Code: Select all

convert -background none -density 300 -colorspace sRGB teste-sombra-rgb.ai 2.png

The files:
teste-sombra-rgb.ai
teste-sombra-cmyk.ai

teste-sombra-cmyk copiar.eps
teste-sombra-rgb.eps