Author

Lei Zhang

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Open access Aug 2026

Hierarchical path planning based on Bi‐RRT* and fractional‐order APF for vehicle obstacle avoidance in dynamic environments

The traditional artificial potential field (APF) method in intelligent vehicle path planning has some issues. It tends to fall into local optima for the target point, and suffers from insufficient trajectory smoothness. To address these issues, a hierarchical planning method is proposed that integrates the bidirectiona...

Jinxu Sun, Lei Zhang, Jingjing Yang · Engineering Research Express · 0 citations

Open access Aug 2026

Online Detection and Grading of Tomato External Quality Based on Machine Vision

Tomato shape and mass are key indicators for external quality evaluation, while manual inspection is inefficient and subjective. This study proposes an online method for tomato external quality detection and grading based on machine vision. Images of 1,000 tomato samples were collected using grading equipment to cons...

Ranran Li, Lei Zhang, Fanghong Liu et al. · International Journal of Foo... · 0 citations