Image format

Question

Recently I've been getting a "unsupported image format" while downloading images from my Canon 1D. About 6 images will transfer but then I get that dialogue and a blank space where the image should be. This used to be bullet proof but now I spend more time than usual.
I have to turn off the camera, quit Aperture and restart the computer in order to resume work. I am still able to transfer images to my laptop. Does anyone have an answer for this?
Thanks,
Steve

Answer 1

Thanks.
It works fine without a serious performance penalty on the process. But I have found a another problem. In my application I have to download thousands of images from the server to store them in my hard drive, this means that I have to execute this piece of code thousand of following times, one for each image I want to download, in my case, if the image is "jpeg", I download it. When I execute the code several following times, the execution gets stuck when reading the image and I even lose the internet connection of the equipment. If I remove the piece of code which checks the format, everything works fine and I can download as many images as I want. Any idea of what is happening?
while (tilesIdToProcess.size()>0)
String quadKey = (String)tilesIdToProcess.remove(0);
url_request = String.format(REQUEST, args[3], args[4], quadKey, args[5]);
URL url = new URL(url_request);
//Check image format
ImageInputStream iis = ImageIO.createImageInputStream(url.openStream());
Iterator<ImageReader> readers = ImageIO.getImageReaders(iis);
String format = "";
while (readers.hasNext()) {
ImageReader read = readers.next();
format = read.getFormatName();
iis.close();
//Download and save image if "jpeg"
if (format.equals("JPEG"))
Image image = ImageIO.read(url);      //Image is downloaded, after several loops, the execution gets stuck here.
String dstPath = dst + type + "/" + layer + "/" + projection + "/" + getPathFromQuadKey(quadKey);
File folder;
folder = new File( dstPath.substring(0, dstPath.lastIndexOf("/") + 1));
if (!folder.exists())
folder.mkdirs();
File file = new File(dstPath);
ImageIO.write((RenderedImage) image, "jpeg", file );
}