Cereal grain size measurement based on image processing technology

In older to measure the cereal grain size rapidly and objectively, a measurement method based on digital image processing technology was proposed. Firstly, the grain images acquired by a scanner were preprocessed by using the methods of image enhancement and morphological reconstruction. Then 2D Otsu was used to segment the image. Finally, through image analysis technology the grain size parameters were measured, including grain number, area, size, roundness and size distribution etc., the experiment results show that the image measurement method has advantages of accuracy and high efficiency.