imagick wrong color profile for eps to jpg - Stack Overflow

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wrong colors, these become e.g. high contrast green. tried to use ghostscript to attach the colors, but then it leads to wrong canvas dimension.

// Function to generate thumbnail from EPS using Imagick
// this code works fine but generates wrong colors
function generateThumbnailFromEps($epsFile, $outputPath) {
    try {
        $imagick = new Imagick();

        // Set the resolution before reading the EPS file
        $imagick->setResolution(300, 300);

        // Read the EPS file
        $imagick->readImage($epsFile);

        // Flatten image to remove transparency and set background to white
        $imagick->setImageBackgroundColor('white');
        $imagick = $imagick->mergeImageLayers(Imagick::LAYERMETHOD_FLATTEN);

        // Ensure colorspace is RGB to fix color issues
        $imagick->transformImageColorspace(Imagick::COLORSPACE_RGB);

        // Resize the image while maintaining the aspect ratio
        $originalWidth = $imagick->getImageWidth();
        $originalHeight = $imagick->getImageHeight();
        $newWidth = 1280;
        $newHeight = ($newWidth / $originalWidth) * $originalHeight;
        $imagick->resizeImage($newWidth, $newHeight, Imagick::FILTER_LANCZOS, 1);

        // Create a canvas with the same size as the resized image (no extra padding)
        $canvas = new Imagick();
        $canvas->newImage($newWidth, $newHeight, new ImagickPixel('white'));

        // Composite the resized image directly onto the canvas
        $canvas->compositeImage(
            $imagick,
            Imagick::COMPOSITE_OVER,
            0, 0  // Place image at the top-left corner (no padding)
        );

        // Set image format and save the output
        $canvas->setImageCompression(Imagick::COMPRESSION_JPEG);
        $canvas->setImageCompressionQuality(96);

if ($canvas->getImageColorspace() !== Imagick::COLORSPACE_SRGB) {
    // Convert to sRGB color space
$canvas->transformImageColorspace(Imagick::COLORSPACE_SRGB);
}

        $canvas->setImageFormat('jpg');
        $canvas->writeImage($outputPath);


        // Clean up resources
        $imagick->clear();
        $canvas->clear();
        $imagick->destroy();
        $canvas->destroy();

      //  echo "Generated thumbnail: $outputPath\n";
    } catch (Exception $e) {
      //  echo "Failed to generate thumbnail from EPS: " . $e->getMessage() . "\n";
    }
}

i tried it with ghostscript and imagick alone only. i have to use a canvas because some eps delivered are a mess and the reolution(s) are always different too.

// Step 1: Use Ghostscript to convert the EPS to a color-corrected PNG (RGB color profile)
// this code if set first, sets the correct colors but mess up the image dimension and generated white-space on top and right
        $tempFile = sys_get_temp_dir() . '/' . uniqid('temp_image_', true) . '.png';

        // Ghostscript command to convert EPS to PNG and apply color profile correction (RGB)
        $gsCommand = "gs -dSAFER -dBATCH -dNOPAUSE -sDEVICE=png16m "
                   . "-dColorConversionStrategy=/sRGB -dOverrideICC "
                   . "-sOutputFile=" . escapeshellarg($tempFile) . " "
                   . "-r300 " . escapeshellarg($epsFile);

        // Execute Ghostscript command
        exec($gsCommand, $output, $returnCode);`

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