Fecha de publicación: 26/06/2013 Fuente: Wipo tomato The invention discloses an outdoor tomato identification method based on subsection threshold image segmentation and light spot identification. The method includes: after normalized color difference Cd and color component ratio rGB are calculated, subsection threshold image segmentation is utilized to realize tomato non-light-spot area segmentation Rr; a light spot area segmentation algorithm is used to extract a candidate tomato light spot area Rb, and Rr and Rb form an initial tomato area Rt; area marking and denoising are performed to Rt; calculating area At of the initial tomato area and area Ab of the candidate tomato light spot area; in the same tomato area, if Ab is smaller than one third of At, Rb is reserved at the tomato area, otherwise Rb is reckoned as a background light spot area and removed, and only Rr is reserved; and area marking and denoising are performed to the finally obtained tomato area. Subsection threshold image segmentation and light spot identification are combined to overcome influences of natural light variation, and real-time fruit identification under different lighting conditions is achieved.