Re: [JAVA2D] Problem with Affine transform
-Original Message- From: Chris Campbell [mailto:[EMAIL PROTECTED] Sent: Tuesday, June 24, 2003 8:29 PM To: Carlos Rodriguez Cc: [EMAIL PROTECTED] Subject: Re: [JAVA2D] Problem with Affine transform Hi Carlos, I'm not entirely sure what you mean when you say the pixels are messed up, but it doesn't look like you're doing anything wrong. To be more specific, this is how it looks like: take the original image, reduce it by 85 percent, mirror it, and then, across the top of the target image, paste both of these. Then draw black pixels across the rest of the image. The actual target image has the right dimensions, but the pixles are displayed as above. You may be able to work around the problem by copying the resulting INT_ARGB BufferedImage into a BI of the same type as your source when the AffineTransformOp is finished processing. Then you can use that image with the rest of your image processing routines. The problem with this approach is that the original image had pixels composed of 16-bit values. I expected (I might be wrong) for the scaling/bilinear interpolation process to yield another array of 16 bit values. If I get an array of ARGB values instead, I don't think the 16 bit values I needed for subsequent calculations will actually be there. From what I see in the debugger, they look like RGB tuples to me (admittedly, the image itself looks grey enough). I will put together a test case and report it soon. -Carlos Rodriguez Thanks, Chris On Tuesday, June 24, 2003, at 04:10 PM, Carlos Rodriguez wrote: Hi: I am encountering a very bizarre problem while trying to scale a 16-bit UShort image using the AffineTransformOp class. Basically what happens is that, if I create a compatible destination image with the createCompatibleDestImage() method, when I actually call the filter method the resulting image has its pixels messed up. However, if I leave it to the filter method (by setting the second arg to null), the pixels *look* good, but they are RGB and therefore unusable for any further image processing (at least to me). For some reason the latter method produces a TYPE_INT_ARGB image. Can anyone help me understand this? Here's the code (where img is being passed in): double factor = 0.25; AffineTransform at = new AffineTransform(); at.setToScale(factor, factor); AffineTransformOp op= new AffineTransformOp(at,AffineTransformOp.TYPE_BILINEAR); BufferedImage retval= op.createCompatibleDestImage(img, img.getColorModel()); // //this one will produce an image of the correct type, but broken // BufferedImage result = op.filter(imgs[0], retval ); // //this one will produce an image that looks good but is of the wrong type: // BufferedImage result2 = op.filter(img, retval ); The relevant aspects of the source image are (dumped from the debugger): colorModel= java.awt.image.ComponentColorModel (id=46) imageType= 11 raster= sun.awt.image.ShortInterleavedRaster (id=61) dataBuffer= java.awt.image.DataBufferUShort (id=64) height= 2457width= 2048numBands= 1 sampleModel= java.awt.image.PixelInterleavedSampleModel (id=67) dataType= 1 numBands= 1numBanks= 1 pixelStride= 1 scanlineStride= 2048 Thanks in advance for your help. -Carlos Rodriguez P.S. I can't use JAI. == = To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message signoff JAVA2D-INTEREST. For general help, send email to [EMAIL PROTECTED] and include in the body of the message help. ==To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message signoff JAVA2D-INTEREST. For general help, send email to [EMAIL PROTECTED] and include in the body of the message help.
Re: [JAVA2D] Problem with Affine transform
STOP SENDING US MESSAGES ! Dmitri Trembovetski wrote: It'd also help if you specify the jdk version you're using, and the platform you're running it on. Thank you, Dmitri On Tue, Jun 24, 2003 at 05:28:58PM -0700, Chris Campbell wrote: Hi Carlos, I'm not entirely sure what you mean when you say the pixels are messed up, but it doesn't look like you're doing anything wrong. You may have hit a bug in AffineTransformOp. Please submit a bug report and attach a simple testcase that we can run to reproduce the problem. You may be able to work around the problem by copying the resulting INT_ARGB BufferedImage into a BI of the same type as your source when the AffineTransformOp is finished processing. Then you can use that image with the rest of your image processing routines. Thanks, Chris On Tuesday, June 24, 2003, at 04:10 PM, Carlos Rodriguez wrote: Hi: I am encountering a very bizarre problem while trying to scale a 16-bit UShort image using the AffineTransformOp class. Basically what happens is that, if I create a compatible destination image with the createCompatibleDestImage() method, when I actually call the filter method the resulting image has its pixels messed up. However, if I leave it to the filter method (by setting the second arg to null), the pixels *look* good, but they are RGB and therefore unusable for any further image processing (at least to me). For some reason the latter method produces a TYPE_INT_ARGB image. Can anyone help me understand this? Here's the code (where img is being passed in): double factor = 0.25; AffineTransform at = new AffineTransform(); at.setToScale(factor, factor); AffineTransformOp op= new AffineTransformOp(at,AffineTransformOp.TYPE_BILINEAR); BufferedImage retval= op.createCompatibleDestImage(img, img.getColorModel()); // //this one will produce an image of the correct type, but broken // BufferedImage result = op.filter(imgs[0], retval ); // //this one will produce an image that looks good but is of the wrong type: // BufferedImage result2 = op.filter(img, retval ); The relevant aspects of the source image are (dumped from the debugger): colorModel= java.awt.image.ComponentColorModel (id=46) imageType= 11 raster= sun.awt.image.ShortInterleavedRaster (id=61) dataBuffer= java.awt.image.DataBufferUShort (id=64) height= 2457width= 2048numBands= 1 sampleModel= java.awt.image.PixelInterleavedSampleModel (id=67) dataType= 1 numBands= 1numBanks= 1 pixelStride= 1 scanlineStride= 2048 Thanks in advance for your help. -Carlos Rodriguez P.S. I can't use JAI. === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message signoff JAVA2D-INTEREST. For general help, send email to [EMAIL PROTECTED] and include in the body of the message help. === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message signoff JAVA2D-INTEREST. For general help, send email to [EMAIL PROTECTED] and include in the body of the message help. === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message signoff JAVA2D-INTEREST. For general help, send email to [EMAIL PROTECTED] and include in the body of the message help. === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message signoff JAVA2D-INTEREST. For general help, send email to [EMAIL PROTECTED] and include in the body of the message help.
Re: [JAVA2D] Problem with Affine transform
STOP SENDING US MESSAGES ! Carlos Rodriguez wrote: Hi: I am encountering a very bizarre problem while trying to scale a 16-bit UShort image using the AffineTransformOp class. Basically what happens is that, if I create a compatible destination image with the createCompatibleDestImage() method, when I actually call the filter method the resulting image has its pixels messed up. However, if I leave it to the filter method (by setting the second arg to null), the pixels *look* good, but they are RGB and therefore unusable for any further image processing (at least to me). For some reason the latter method produces a TYPE_INT_ARGB image. Can anyone help me understand this? Here's the code (where img is being passed in): double factor = 0.25; AffineTransform at = new AffineTransform(); at.setToScale(factor, factor); AffineTransformOp op= new AffineTransformOp(at,AffineTransformOp.TYPE_BILINEAR); BufferedImage retval= op.createCompatibleDestImage(img, img.getColorModel()); // //this one will produce an image of the correct type, but broken // BufferedImage result = op.filter(imgs[0], retval ); // //this one will produce an image that looks good but is of the wrong type: // BufferedImage result2 = op.filter(img, retval ); The relevant aspects of the source image are (dumped from the debugger): colorModel= java.awt.image.ComponentColorModel (id=46) imageType= 11 raster= sun.awt.image.ShortInterleavedRaster (id=61) dataBuffer= java.awt.image.DataBufferUShort (id=64) height= 2457width= 2048numBands= 1 sampleModel= java.awt.image.PixelInterleavedSampleModel (id=67) dataType= 1 numBands= 1numBanks= 1 pixelStride= 1 scanlineStride= 2048 Thanks in advance for your help. -Carlos Rodriguez P.S. I can't use JAI. === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message signoff JAVA2D-INTEREST. For general help, send email to [EMAIL PROTECTED] and include in the body of the message help. === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message signoff JAVA2D-INTEREST. For general help, send email to [EMAIL PROTECTED] and include in the body of the message help.
Re: [JAVA2D] Problem with Affine transform
Hi Carlos, I'm not entirely sure what you mean when you say the pixels are messed up, but it doesn't look like you're doing anything wrong. You may have hit a bug in AffineTransformOp. Please submit a bug report and attach a simple testcase that we can run to reproduce the problem. You may be able to work around the problem by copying the resulting INT_ARGB BufferedImage into a BI of the same type as your source when the AffineTransformOp is finished processing. Then you can use that image with the rest of your image processing routines. Thanks, Chris On Tuesday, June 24, 2003, at 04:10 PM, Carlos Rodriguez wrote: Hi: I am encountering a very bizarre problem while trying to scale a 16-bit UShort image using the AffineTransformOp class. Basically what happens is that, if I create a compatible destination image with the createCompatibleDestImage() method, when I actually call the filter method the resulting image has its pixels messed up. However, if I leave it to the filter method (by setting the second arg to null), the pixels *look* good, but they are RGB and therefore unusable for any further image processing (at least to me). For some reason the latter method produces a TYPE_INT_ARGB image. Can anyone help me understand this? Here's the code (where img is being passed in): double factor = 0.25; AffineTransform at = new AffineTransform(); at.setToScale(factor, factor); AffineTransformOp op= new AffineTransformOp(at,AffineTransformOp.TYPE_BILINEAR); BufferedImage retval= op.createCompatibleDestImage(img, img.getColorModel()); // //this one will produce an image of the correct type, but broken // BufferedImage result = op.filter(imgs[0], retval ); // //this one will produce an image that looks good but is of the wrong type: // BufferedImage result2 = op.filter(img, retval ); The relevant aspects of the source image are (dumped from the debugger): colorModel= java.awt.image.ComponentColorModel (id=46) imageType= 11 raster= sun.awt.image.ShortInterleavedRaster (id=61) dataBuffer= java.awt.image.DataBufferUShort (id=64) height= 2457width= 2048numBands= 1 sampleModel= java.awt.image.PixelInterleavedSampleModel (id=67) dataType= 1 numBands= 1numBanks= 1 pixelStride= 1 scanlineStride= 2048 Thanks in advance for your help. -Carlos Rodriguez P.S. I can't use JAI. === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message signoff JAVA2D-INTEREST. For general help, send email to [EMAIL PROTECTED] and include in the body of the message help. === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message signoff JAVA2D-INTEREST. For general help, send email to [EMAIL PROTECTED] and include in the body of the message help.
Re: [JAVA2D] Problem with Affine transform
It'd also help if you specify the jdk version you're using, and the platform you're running it on. Thank you, Dmitri On Tue, Jun 24, 2003 at 05:28:58PM -0700, Chris Campbell wrote: Hi Carlos, I'm not entirely sure what you mean when you say the pixels are messed up, but it doesn't look like you're doing anything wrong. You may have hit a bug in AffineTransformOp. Please submit a bug report and attach a simple testcase that we can run to reproduce the problem. You may be able to work around the problem by copying the resulting INT_ARGB BufferedImage into a BI of the same type as your source when the AffineTransformOp is finished processing. Then you can use that image with the rest of your image processing routines. Thanks, Chris On Tuesday, June 24, 2003, at 04:10 PM, Carlos Rodriguez wrote: Hi: I am encountering a very bizarre problem while trying to scale a 16-bit UShort image using the AffineTransformOp class. Basically what happens is that, if I create a compatible destination image with the createCompatibleDestImage() method, when I actually call the filter method the resulting image has its pixels messed up. However, if I leave it to the filter method (by setting the second arg to null), the pixels *look* good, but they are RGB and therefore unusable for any further image processing (at least to me). For some reason the latter method produces a TYPE_INT_ARGB image. Can anyone help me understand this? Here's the code (where img is being passed in): double factor = 0.25; AffineTransform at = new AffineTransform(); at.setToScale(factor, factor); AffineTransformOp op= new AffineTransformOp(at,AffineTransformOp.TYPE_BILINEAR); BufferedImage retval= op.createCompatibleDestImage(img, img.getColorModel()); // //this one will produce an image of the correct type, but broken // BufferedImage result = op.filter(imgs[0], retval ); // //this one will produce an image that looks good but is of the wrong type: // BufferedImage result2 = op.filter(img, retval ); The relevant aspects of the source image are (dumped from the debugger): colorModel= java.awt.image.ComponentColorModel (id=46) imageType= 11 raster= sun.awt.image.ShortInterleavedRaster (id=61) dataBuffer= java.awt.image.DataBufferUShort (id=64) height= 2457width= 2048numBands= 1 sampleModel= java.awt.image.PixelInterleavedSampleModel (id=67) dataType= 1 numBands= 1numBanks= 1 pixelStride= 1 scanlineStride= 2048 Thanks in advance for your help. -Carlos Rodriguez P.S. I can't use JAI. === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message signoff JAVA2D-INTEREST. For general help, send email to [EMAIL PROTECTED] and include in the body of the message help. === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message signoff JAVA2D-INTEREST. For general help, send email to [EMAIL PROTECTED] and include in the body of the message help. === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message signoff JAVA2D-INTEREST. For general help, send email to [EMAIL PROTECTED] and include in the body of the message help.
