Apologies for the somewhat vague title, I can't work out what the keywords are here. The setup's quite simple, I'm opening an image with
ImageIO.read(new File(filename));
This works for most files, however for one I get an IllegalArgumentException with the detail: "numbers of source Raster bands and source color space components do not match"
. This image was obtained via wget on a valid Flickr URL, and I've used other images obtained this way, so the method for obtaining images seems sound in principle. I'm not sure what's causing the exception.
A workaround would be more than acceptable - I'm not fussed with using ImageIO
in particular, and the image looks fine visually. I just need to get it being read without Java freaking out!
Here's the image in question, in case it's of any use:
So I was having this same issue and found that the image was gray-scale and that the default ImageIO.read implementation was not figuring that out because the image metadata wasn't quite as expected. I wrote a work around that retries the load as 'BufferedImage.TYPE_BYTE_GRAY' if it fails the main load.
Iterator<ImageReader> iter = ImageIO.getImageReaders(stream);
Exception lastException = null;
while (iter.hasNext()) {
ImageReader reader = null;
try {
reader = (ImageReader)iter.next();
ImageReadParam param = reader.getDefaultReadParam();
reader.setInput(stream, true, true);
Iterator<ImageTypeSpecifier> imageTypes = reader.getImageTypes(0);
while (imageTypes.hasNext()) {
ImageTypeSpecifier imageTypeSpecifier = imageTypes.next();
int bufferedImageType = imageTypeSpecifier.getBufferedImageType();
if (bufferedImageType == BufferedImage.TYPE_BYTE_GRAY) {
param.setDestinationType(imageTypeSpecifier);
break;
}
}
bufferedImage = reader.read(0, param);
if (null != bufferedImage) break;
} catch (Exception e) {
lastException = e;
} finally {
if (null != reader) reader.dispose();
}
}
// If you don't have an image at the end of all readers
if (null == bufferedImage) {
if (null != lastException) {
throw lastException;
}
}
The error message is informative and indicates that the number of raster bands, as mentioned in the ICC color profile, seems to be incorrect. I used ImageMagick to strip the ICC profile from the image. ImageIO subsequently has no problems reading the images (~1k bad images). Hope that helps.
It is possible to read this image using twelvemonkeys ImageIO, which is a more robust and forgiving replacement for the original ImageIO provided by the JRE.
See https://github.com/haraldk/TwelveMonkeys/
I found this solution in the PDF Box Jira https://issues.apache.org/jira/browse/PDFBOX-3637
In order to use twelvemonkeys, it is sufficient to add it as a maven dependency. It then registers itself before the default image processor.
<dependency>
<groupId>com.twelvemonkeys.imageio</groupId>
<artifactId>imageio-jpeg</artifactId>
<version>3.3.2</version> <!-- Alternatively, build your own version -->
</dependency>
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