Vampix

Vampix is a small application that lets you adjust the levels of colors or black and white filter in your photographs. The tool only supports the JPG format.
The interface of the program is based on a standard window with an uncomplicated layout. Loading an image file can be done with the hepl of either the file browser or 'drag and drop' method. Unfortunately, you cannot work with multiple items at the same time.
So, you can get started by establishing a central color, by inputting the red, green and blue color values. Afterward, you can adjust the thresholds or select a preset between 'narrow', 'medium' and 'large'.
On the right side of the screen, you can check out on-the-fly color values and the difference between them and the central color values. But you can also toggle between picture and mask mode. When you are done fiddling with the photograph, you can save it by specifying an output directory and filename. Plus, it is possible to reset all settings to their default values and to view a log file.
The straightforward software solution has a good response time and uses a moderate amount of CPU and system memory. We have not encountered any difficulties throughout our testing; Vampix did not freeze, crash or pop up error dialogs. Thanks to its intuitive layout and overall simplicity, Vampix's features are easy to comprehend. However, we would have liked to see support for additional file types, such as BMP, PNG, GIF and TIF.