1. A gesture recognition apparatus using a steering wheel of a vehicle, the gesture recognition apparatus including imaging means disposed on a position capable of imaging a steering wheel and recognizing means for recognizing a position of a hand on the steering wheel based on an imaging data outputted from the imaging means, the recognizing means comprising: binarizing means for preparing a first binary image by binarizing the imaging data outputted from the imaging means by a predetermined method; rebinarizing means for preparing a second binary image by determining a first possible area wherein the hand is imaged during making a gesture and a second possible area wherein a background is imaged during making a gesture on the imaging data, determining a new threshold by a predetermined method merging the first and the second areas into one image, and rebinarizing a predetermined area of the imaging data; and determining means for determining the hand as being recognizable if the hand can be recognized in the first binary image and/or in the second binary image.