Vegetable Seeds Sorting with Color Machine Vision

• Main Authors: Huang Cheng Lin, 黃正霖
• Other Authors: Lee Fang Fan
• Format: Others
• Language: zh-TW
• Published: 1994
• Online Access: http://ndltd.ncl.edu.tw/handle/62500464576996253948

碩士 === 國立中興大學 === 農業機械工程學系 === 82 === This vegetable seeds sorting machine is equipped with a vacuum-type seeds sucking disk, an electric sorting circuit, an air jet discharger, namely, the R model and I model, were used in this study. When the gray-level value of R or I image of a seed was greater than the threshold, this seed was considered as a bad seed; otherwise, it was judged as a good seed. During the sorting process, the seeds were poured into the seed room first, then singularized by the sucking disk. As the seed reached the highest position on the sucking disk, the CCD camera grabbed the image of the seed and the computer analysis this image immediately. Then, When the seed reached the lowest position, it was scraped off from the disk and falling down into a container if it was a good seed. If the seed was bad, it would be blown into another container by air jet while it was falling down. The sorting in an array in byte type to control the action of the air jet. Experimental results show that for Chinese cabbage seeds sorting accuracy rate is 98.75％ for the R model , and 97.4％ for the I model. For cabbage seeds, the accuracy rate is 97.4％ and 96.5％ for the R model and I model, respectively. It took 0.16 seconds to sort a seed including image acquisition; namely, 375 seeds could be sorted per minute if the motor speed, the actual sorting capacity is 83 seeds per minute.