Outdoor visible light communication target signal source tracking and extracting method based on optical flow method

• Main Authors: FAN ZHIBO, GUAN WEIPENG, DENG SHULE, HUANG MOUXIAO, CHEN ZENGHONG, WEN SHANGSHENG
• Format: Patent
• Language: Chinese; English
• Published: 27.09.2019
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION

The invention discloses an outdoor visible light communication target signal source tracking and extracting method based on an optical flow method. The method comprises the following steps: carrying out OOK modulation on an LED array signal of a transmitting end in an outdoor scene; adopting a high-speed image sensor at a receiving end to capture images at a high frame rate, and tracking a signal source by adopting an optical flow method as a tracking algorithm of a target signal source; performing OTSU binarization processing on the tracked target area; and adopting the decoder at the receiving end to demodulate the original LED modulation data based on the obtained array pixel value to realize communication. According to the invention, a target signal source is tracked by adopting an optical flow method; an OTSU binarization processing method is adopted, the ripple effect generated by the distance between a transmitting end and a receiving end is overcome, the demodulation rate of a decoder is increased, th