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Why Imagick can't import my psd files giving me a channels exceeded exception? – Photoshop

I’ve created a method called convertImage() that uses Imagick to convert any file into a jpeg file.

I’ve added ICC profiles to deal with CMYK to RGB conversions.

This is working well for thousands of files except for a few PSD files.

public static function convertImage($localPath, $destination, $max_width, $max_height)
{
    $image = new Imagick();
    $image->readImage($localPath);

    if(pathinfo($localPath, PATHINFO_EXTENSION) === "psd"){
        $image->setIteratorIndex(0);
    }

    if ($image->getImageColorspace() == Imagick::COLORSPACE_CMYK) {
        $profiles = $image->getImageProfiles('*', false);
        // we're only interested if ICC profile(s) exist
        $has_icc_profile = (array_search('icc', $profiles) !== false);
        // if it doesnt have a CMYK ICC profile, we add one
        if ($has_icc_profile === false) {
            $icc_cmyk = file_get_contents(__DIR__ . '/../icc/USWebUncoated.icc');
            $image->profileImage('icc', $icc_cmyk);
            unset($icc_cmyk);
        }
        // then we add an RGB profile
        $icc_rgb = file_get_contents(__DIR__ . '/../icc/sRGB_v4_ICC_preference.icc');
        $image->profileImage('icc', $icc_rgb);
        unset($icc_rgb);
    }
    $image->stripImage();
    $image->setImageFormat('jpg');
    $image->setImageCompressionQuality(85);
    $image->writeImage($destination);
    $image->clear();
    $image->destroy();

    // we resize files in a second time because of a imagick bug (pictures become black)
    $image = new Imagick();
    $image->readImage($destination);
    $image->scaleImage($max_width, $max_height, true);
    $image->writeImage($destination);
    $image->clear();
    $image->destroy();
}

For some PSD files I got this Exception:

maximum channels exceeded `ART00060111_B.psd' @ error/psd.c/ReadPSDImage/1085

And for others:

Unable to read the file: ART00060111_A.psd

You can find the files here: [ART00060111_A.psd, ART00060111_B.psd, USWebUncoated.icc, sRGB_v4_ICC_preference.icc]

Here is my phpinfo() concerning Imagick:

phpinfo (Imagick section)

Tags:

2

Answers


  1. 0

    May be this will help you:

    Imagick::autoLevelImage

    This Adjusts the levels of a particular image channel by scaling the minimum and maximum values to the full quantum range.

    Example #1 Imagick::autoLevelImage()

    <?php
function autoLevelImage($imagePath) {
    $imagick = new Imagick(realpath($imagePath));
    $imagick->autoLevelImage();
    header("Content-Type: image/jpg");
    echo $imagick->getImageBlob();
}

?>
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  2. 0

    The following commands work fine for me on ImageMagick 6.9.9.0 Q16 Mac OSX. As I mentioned in my comment earlier, just convert the first layer of the PSD file. Sorry, I do not know Imagick well. So here is the equivalent ImageMagick command.

    convert ART00060111_A.psd[0] -profile USWebUncoated.icc -profile sRGB_v4_ICC_preference.icc ART00060111_A.jpg

    enter image description here

    convert ART00060111_B.psd[0] -profile USWebUncoated.icc -profile sRGB_v4_ICC_preference.icc ART00060111_B.jpg

    enter image description here

    P.S. It looks like you are trying to access the first layer via $image->setIteratorIndex(0);. So I am not sure why you are getting such messages. Can you try my commands in a terminal window? Do they work there? If not, then perhaps there is a bug in your version of ImageMagick.

    Also why do you strip the jpg of the profiles via $image->stripImage();. For best cross-platform and various browser viewing, you get a more consistent looking result if you leave the sRGB profile.

    What bug are you mentioning that causes you to have to start Imagick over to do the resize?

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