Hello Guillermo,
I suspect that you are using java.awt.Toolkit to read images.
Tooklit does not provide support for built in color profiles for JPEG.
Embedded profile is ignored and this will likely lead to color
discrepancies
you described.
I'd suggest to use ImageIO API to read images. The jpeg plugin for
ImageIO is
able to read color profiles embedded in jpeg images and may either produce
buffered image based on this color profile or convert image data to
sRGB color
space.
ImageIO API is available since 1.4 but in the newer JDK it may have
much better
performance. I'd recommend to use JDK 6.
BTW, if you want to preserve colors but do not need to preserve
embedded profile
then I'd recommend to stick with default behavior of jdk 6 - it will
use custom profile
once to read and convert image to one of standard profiles. Usage of
true custom
color profiles may significantly degrade performance because
accelerated pipelines
are not used.
Thanks,
Andrew
Guillermo Ripol wrote:
Hello everybody,
We are a company from Spain, specialized in ONLINE APPLICATIONS for DIGITAL
PHOTOGRAPHY. The technology we use is JAVA because allows us to work with
images ONLINE as no other technology. But, we have a problem with the JPG
images, when we have to scale them and mantain the PROFILE they have. We
have no problem scaling images (even with 10 Mpixels images), but we loose
the PROFILE, so the colours are not well viewed. How can we mantain the
profiles of the JPG images (user images) when our applets have to scale
them?
Thank you very much...
Guillermo Ripol
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