PHP imagick converts image from CMYK to RGB inverts image

Question

I have an image that is rejected by the eBay API because of this:

 <ShortMessage>Source picture uses an unsupported colorspace.</ShortMessage>
    <LongMessage>Pictures with a CMYK colorspace are not supported; source pictures must use a RGB colorspace compatible with all web browsers supported by eBay. Submit pictures created using a camera or scanner set to save images with RGB color.</LongMessage>

Well, I did not suspect that it was CMYK, and I don’t even know how to say it. Then I used the following code to try to convert:

$image= "$img.jpg";
$i = new Imagick($image);
$i->setImageColorspace(Imagick::COLORSPACE_SRGB);
$i->writeImage($image);
$i->destroy();

It converts (and is now accepted by eBay), but also inverts the colors of the image. Why do this and is there more COLORSPACEI should use?

Thank.

Answer 1

The setImageColorSpace method is not intended to be used for existing images - it is intended only for new images (for example, $imagick->newPseudoImage(100, 100, "xc:gray");)

transformImageColorSpace .

$image= "$img.jpg";
$i = new Imagick($image);
$i->transformImageColorspace(Imagick::COLORSPACE_SRGB);
$i->writeImage($image);
$i->destroy();