Research on Direction Recognition of Plug Seedling of Vegetable Based on Image Morphology

The seedlings of vegetable are planted in plug trays in modern system of greenhouse planting. The random of directions of seedlings' leaves has serious influence on operations of agricultural machinery. So a set of visual system is developed for recognizing and adjusting the directions of seedling's leaves in this paper. According to the special working environment, the software halcon is used to process initial images by operations, including image preprocessing, threshold segmentation and image morphology, et. And the direction of plug seedlings is defined and recognized in processed image. Finally, it is found that the effect of direction recognition is remarkable through the test.