用真实非洲场景测了5个主流VLM，发现Gemini和Qwen在车牌识别上比YOLO+OCR更准，有数据有对比。
本研究评估了五种视觉语言模型（Gemini 2.0 Flash Exp、Qwen2.5-VL-7B-Instruct、GPT-4o、Claude 4 Sonnet、Llama 3.2 Vision 90b）在尼日利亚车牌识别中的零样本学习表现。使用包含88张真实环境图像的测试集，基于字符错误率（CER）指标，Gemini与Qwen在准确性和鲁棒性上显著优于其他模型。该工作对比了VLM与传统YOLO+OCR管线的优劣，并质疑了模型提供商的性能宣称。
Evaluating Vision-Language Models as a Zero-Shot Learning Alternative to You Only Look Once and Optical Character Recognition for Nigerian License Plate Recognition
License Plate Recognition (LPR) systems are critical tools in traffic monitoring, security enforcement, and urban mobility management. Traditional LPR systems often rely on a multi-stage pipeline involving object detection using You Only Look Once (YOLO) and Optical Character Recognition (OCR), which suffer from limitations such as high resource demands, poor performance in unstructured environments, and the need for large annotated datasets. This study explores the potential of Vision-Language Models (VLMs) as a unified, zeroshot learning solution for Nigerian license plate recognition. Using a curated dataset of 88 challenging real-world images collected in Nigeria, we evaluate five selected VLMs: Gemini 2.0 Flash Exp (Google DeepMind), Qwen2.5-VL-7B-Instruct (Alibaba), GPT-4o (OpenAI), Claude 4 Sonnet (Anthropic), and Llama 3.2 Vision 90b (Meta). Results based on Character Error Rate (CER) reveal that Gemini and Qwen significantly outperform other models in both accuracy and robustness, on the challenging image scenarios. This work highlights the practical advantages of VLMs over YOLO+OCR, questions the claims by model providers, and compares the performances of the VLMs.