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 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Real-time Selective Herbicide Applicator for Field Sugarcane) ผู้เขียน: ดร.สมหญิง ไทยนิมิต, รองศาสตราจารย์ ,  อภิมุข เมืองเกษม, Rachaporn Keinprasit, Thanika Duangtanoo, Rattana Tangwongkit, Tsuyoshi Isshiki สื่อสิ่งพิมพ์:pdf AbstractA system for a real-time selective herbicide applicator was developed. The system worked under natural light conditions without any assistant lighting device. A fast color-based weed detection technique was developed using a non-green subtraction procedure along with a conventional offset excessive green procedure. The experimental results showed that integrating these two techniques improves the robustness and weed detection accuracy of the system. In addition, the precision of the system was enhanced by increasing the command rates of the system controller. With the higher command rate, the number of detected weed groups was increased from 84.38 to 93.75%. |
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หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : A Land Cover Mapping Algorithm Based on a Level Set Method) ผู้เขียน:ดร.ธีรสิทธิ์ เกษตรเกษม, รองศาสตราจารย์ , เศรษฐพร ศรีวิไล, Thitiporn Chanwimaluang, Tsuyoshi Isshiki สื่อสิ่งพิมพ์:pdf AbstractA novel supervised classification algorithm is presented for remotely sensed images using the level set method under a statistical framework. The level set method was employed to capture the connectivity properties of land cover classes. This work demonstrated that land cover mapping under the maximum a posteriori criteria can be converted into an energy minimization problem of level set functions. Since the level set functions are real-valued, the optimum solution can be easily obtained from a gradient search technique. The experimental results showed significant improvements in term of the classification performance of the approach on both synthetic and satellite images when compared to the maximum likelihood classifier. |