Real Time Sign Language Recognition System

These days i'm working on my final year project. I have been developed gesture and posture recognition system that is able to recognize the sign language and give the output. This system is fully automatic and work in real time. I used OpenCV (Open Source Computer Vision Library) with visual c++ for implement that system. In this system current frame rate is 20 frames/sec. Advantages of that system are no needing too much worry about the background and also no need to ware gloves for hands. In currently this system recognize 5 signs with 90-95% accuracy in the good lighting condition. When the lighting condition became bad recognition rate also rapidly goes down. And also problem can happen when skin-like colors present at the background. Those are the limitations of that system.