Patent ID: 9584704
Date: 2017-02-28
CPC Classifications: H04N

Claim:
1. A method for detecting electronic lighting flickering, the method comprising: taking a video, with a duration of a predetermined period and a scanning frequency, of an electronic light; extracting a predetermined number of frames of pictures from the video; determining a flickering frequency of the electronic light based on number of pixels between two consecutive bright lines in each frame, number of pixels across the frame, and time period for which the frame is captured; determining at least one fixed reference point at each frame; reconstructing a brightness waveform of the electronic light from the reference point in all frames of the video based on brightness value of the reference point in each frame and time location value of the reference point in each frame; and determining relationship between the flickering frequency of the electronic light and the scanning frequency of the video; wherein: if the flickering frequency is a multiple of the scanning frequency, the video is retaken with a different scanning frequency; and if both the flickering frequency and the scanning frequency are multiples of a same number, additional videos of the electronic light are taken or number of the reference points is increased.