Corn-counting method based on photoelectric signal

1000-grain weight is the single crucial criterion for breeding high quality corn. In order to measure the 1000-grain weight, the problem of counting the corn grains must first be solved. Photodiode was used to obtain the image information of corn grains when free falling, and an identification algorithm was designed for calculating the number of corn grains. The method and the algorithm are capable of high accuracy and a high speed, and have very good reference value to the general grain counting.