User Manual for High ISO Noise Reduction Filter for Adobe (c) PhotoShop
Minimal system requirements:
• Pentium III
• Operating system: Windows 2000/XP/NT/2003/Vista
• Preinstalled Adobe (c) PhotoShop CS (CS2, CS3) application
• 512 Mb RAM
• 10 Mb of free space on the hard disk
High ISO Noise Reduction plug-in filter reduces color noise on digital photo follow by image shapes contours, or, optionally not used contours.
This is original image (200% zoom, crop)

Next, image have a noise reduction without contour detection. This image lost colorful details after process.

And now, image was proccessing with contoured noise reduction, it have more colorful image details.

Also exist option for brightness noise reduction - Per pixel equalization.