Grapes are a globally popular fruit, with grape cultivation worldwide being second only to citrus. This article focuses on the low efficiency and accuracy of traditional manual grading of red grape external appearance and proposes a small-sample red grape external appearance grading model based on...

Diseases are the main factors threatening crop yield, and their characteristics are complex and varied. It is often difficult to accurately identify them for agricultural practitioners lack professional knowledge. In the past, image recognition methods aimed at a single crop, and extracted disease...

When grading and detecting fruit quality, the broken fruit, mechanical damage and hard scar are the common main defects on the surface of sugar orange. The traditional automatic inspect system often cannot accurately distinguish these surface defects. To solve this problem, we designed a computer...

Currently, optical imaging techniques are extensively employed to automatically sort agricultural products based on various quality parameters such as size, shape, color, ripeness, sugar content, and acidity. This methodological review article examined different machine vision techniques, with a...

The geographical indication of pericarpium citri reticulatae (PCR) is very important in grading the quality and price of PCRs. Therefore, terahertz time-domain spectroscopy (THz-TDS) technology combined with convolutional neural networks (CNN) was proposed to distinguish PCRs of different origins...

Objective: This study aimed to establish a comprehensive evaluation model in fruit quality, clarify the comprehensive grade of fruit quality and their corresponding meteorological characteristics from different Newhall Navel orange (Citrus sinensis [L.] Osb. cv. Newhall) orchards in China, so as to ...

The quality of oranges is grounded on their appearance and diameter. Appearance refers to the skin's smoothness and surface cleanliness; diameter refers to the transverse diameter size. They are visual attributes that visual perception technologies can automatically identify. Nonetheless, the...

Kinnow mandarin is a popular citrus fruit in northern India. Citrus cultivars differ in numerous ways, including color, texture, flavor, harvesting time, nutritional content and so on. Consumer acceptance of Kinnow mandarin is determined by their rich orange color, size and other quality...

Citrus fruit is susceptible to postharvest rot by fungal infection. The detection of early rot is difficult due to similar skin characteristics to sound area, which limits the ability of the grading system to evaluate the comprehensive quality of citrus. In this study, the visible and near infrared ...

Green citrus detection in citrus orchards provides reliable support for production management chains, such as fruit thinning, sunburn prevention and yield estimation. In this paper, we proposed a lightweight object detection YOLOv5-CS (Citrus Sort) model to realize object detection and the accurate ...