The attached test case calls ConvolveOp.filter() on a BufferedImage which
is returned from ImageIO as TYPE_3BYTE_BGR. The test throws an exception as follows :

java ConvolveOpTest
Exception in thread "main" java.awt.image.ImagingOpException: Unable to convolve src image
        at java.awt.image.ConvolveOp.filter(ConvolveOp.java:180)
        at ConvolveOpTest.testConvolveIdentitySample(ConvolveOpTest.java:25)
        at ConvolveOpTest.main(ConvolveOpTest.java:9)
Posted Date : 2007-07-26 19:16:00.0

N/A

The root of the problem is that createCompatibleDestImage() of
ConvolveOp class creates buffered image of custom type (in fact
it could be named as TYPE_3BYTE_RGB) as compatible destination
for  TYPE_3BYTE_BGR image.

It happens because images of these types has exactly same color
models and only difference is in raster structure. So, approach
based on utilization of ColorModel.createComaptibleWritableRaster()
can not work here.

We may workaround this problem using createCompatibleWritableRaster()
of source image raster. It allows us to inherit correct raster organization
and produce destination image with exactly same structure.

Problem with using custom destination image is covered by CR 4886732.
Suggested fix for 4886732 solves problem with 3BYTE_BGR
source and 3BYTE_RGB destination as with many other cases.
Posted Date : 2007-08-08 12:44:53.0