Whenever I use the ImageSharpen function, it adds a black border around inside pixels—it works different than the "border" tag in that it doesn't add the border to the image dimensions, it overwrites all the pixels around the image.
How can I turn this off?
We have all the cumulative hotfixes installed and the newest hotfix to solve the image locking problem already. I couldn't find anything about borders in any of the cumulative hotfix explanations, but the documentation is a little thin on those, too.
That seems to be a known issue with certain sharpening methods. I do not know if this was fixed in CF9. But for CF8 the work-around seems to be using a different method for sharpening.
A brief peek confirmed these popular image components seems to using java's ConvolveOp class as a work-around for the ImageSharpen issue
http://www.alagad.com/projects.imageComponent
http://www.opensourcecf.com/imagecfc/
http://imageutils.riaforge.org/
If you are interested, here is a good article explaining how sharpening works with java's ConvolveOp class and how to avoid the black border issue. http://www.informit.com/articles/article.aspx?p=1013851&seqNum=5&rll=1
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