Purpose: A robust, efficient auto-grading computer vision system for meat carcasses is in high demand by researchers all over the world. In this paper, we discuss our study, in which we developed a system to speed up line processing and provide reliable results for pork grading, comparing the results of our algorithms with visual human subjectivity measurements. Methods: We differentiated fat and lean using an entropic correlation algorithm. We also developed a self-designed robust segmentation algorithm that successfully segmented several porkcut samples; this algorithm can help to eliminate the current issues associated with autothresholding. Results: In this study, we carefully considered the key step of autoextracting lean tissue. We introduced a self-proposed scheme and implemented it in over 200 pork-cut samples. The accuracy and computation time were acceptable, showing excellent potential for use in online commercial systems. Conclusions: This paper summarizes the main results reported in recent application studies, which include modifying and smoothing the lean area of pork-cut sections of commercial fresh pork by human experts for an auto-grading process. The developed algorithms were implemented in a prototype mobile processing unit, which can be implemented at the pork processing site.
The Bluetooth Low Energy (BLE) technology provides an effective means for indoor location and navigations by using Beacons - BLE devices that can transmit and receive signals over short distances. Device’s information and goods’ information that is linked to a Beacon can be archived by a mobile application, which is basically a Bluetooth - enabled application. In this paper, we present the design and development of an user - driven information IoT system based on the BLE technology. An experimental product, ESMarket, is a system that uses our self - development Beacon - ESBeacon for smart supermarkets with the ESBeacons are placed in a small supermarket shelves and a Bluetooth - enabled smartphone is used to install the digital supermarket application to communicate with these ESBeacons. The results show that when a smartphone appears within the ESBeacon range, it will display information related to the shelves on the screen.
Bài báo mô tả phương pháp thiết kế và điều khiển thiết bị xe robot chuyên dùng để vận tải các hàng hóa có khối lượng lớn. Cấu trúc được sử dụng ở đây gồm 2 bánh lái độc lập có gắn động cơ nằm chính giữa thân xe và 2 bánh tự lựa ở đầu thân, qua đó cho phép xe được lái bởi phương pháp vi sai vận tốc, với ưu điểm là có thể xoay vòng chuyển hướng xe tại chỗ mà không cần phải bẻ cua. Hệ thống treo được thiết kế tại mỗi bánh xe cho phép các bánh xe này luôn tiếp xúc với mặt đất, qua đó giảm thiểu rung lắc khi di chuyển. Thiết kế cơ khí theo dạng đa tầng với cấu trúc đơn giản nhưng cho phép chịu được tải trọng lớn. Hệ thống đã được lắp đặt và chạy thử nghiệm thực tế. Thuật toán định vị cũng đã được cài đặt trên robot cho phép thiết bị có thể hoạt động tự hành.
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