Grain side-by-side impurity content detection method and device

The invention relates to the technical field of detection, discloses a method and a device for detecting the content of side-by-side impurities in grains, and aims to solve the problems of low efficiency and poor accuracy of an existing detection method. The scheme mainly comprises the following steps: carrying out grain-by-grain image acquisition on a grain sample to obtain a single image of the grain sample; performing image preprocessing on each single image; according to a pre-trained side-by-side impurity identification model, classifying and identifying each single image, and determining a grain image and a side-by-side impurity image; respectively determining a first pixel area of a region formed by a grain contour in each grain image, and respectively determining a second pixel area of a region formed by a side-by-side impurity contour in each side-by-side impurity image; and determining the content of the side-by-side impurities in the grain sample according to the first pixel area and the second pix