Introduction - If you have any usage issues, please Google them yourself
In this post, as the progress goes, the hand detection technologies using openCV is introduced. As the pictures inllustrated below, this detection method is independent with distance and background ( just not the background full of hands ), and the main segment method is color abstract which means getting the hand color pixels filtered. As the result tested within several environments, it workd well except slightly noise varying. But the noise is easy to take off.