We greatly improved performance by just writing image files out to disk and letting a webserver take care of streaming them back. Perhaps that might help in your situation?
On Fri, Jun 13, 2008 at 8:07 PM, Bob Carpenter <[EMAIL PROTECTED]> wrote: > I didn't know that ImageIO reduces quality with each pass. ImageIO is used > at least twice for each file because it gets stored as a BLOB and is served > to clients by saving to disk then reading back in with ImageIO. > > Thanks for the clue - I'll start looking down that path. > > --BobC > > > -----Original Message----- > From: Emmanuel Bourg [mailto:[EMAIL PROTECTED] > Sent: Friday, June 13, 2008 2:18 PM > To: Commons Users List > Subject: Re: Blurry JPGs when using FileUpload 1.2.1 > > > You should write the uploaded image directly to the disk, you reduce its > quality every time your read and write it with ImageIO. > > Emmanuel Bourg > > > Bob Carpenter a écrit : >> Hi, >> >> Using FileUpload 1.2.1 with Struts the image quality of my JPGs are > blurry. >> I've had this problem for a couple years, but was hoping that v1.2.1 would >> solve the problem. >> >> You can view the before and after images here: >> >> http://www.customerfeedbackllc.com/dev/receipt_before_upload.jpg >> http://www.customerfeedbackllc.com/dev/receipt_after_upload.jpg >> >> Here is the code from my Struts Action class that does the work: >> >> String uploadFilePath = form.getUploadFilePath(); >> InputStream is = uploadFile.getInputStream(); // uploadFile is a > FormFile >> BufferedImage bufiIn = ImageIO.read(is); >> >> // bufiIn is stored in a custom object (TransferImage, which extends >> Canvas and is Serializable) - here are the essential steps >> int[] imgPix = (int[])pix; >> int width = bufiIn.getWidth(); >> int height = bufiIn.getHeight(); >> >> BufferedImage bufiOut = new BufferedImage(width, height, >> BufferedImage.TYPE_INT_BGR); >> image.setRGB(0, 0, width, height, imgPix, 0, width); >> >> // Write the bufi to a tmp file for viewing >> ImageIO.write(bufiOut, "jpg", new >> File("c:\\tmp\\receipt_after_upload.jpg")); >> >> The receipt_before_upload.jpg comes from a camera phone. Usually, images >> coming from scanners are not as blurry. >> >> Can you suggest any way to reduce the blurriness? >> >> Thanks, >> >> --BobC >> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: [EMAIL PROTECTED] >> For additional commands, e-mail: [EMAIL PROTECTED] >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
