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Use AI to recognize license plate numbers and origins from images. Supports multiple plate types and input formats.
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当您需要从车辆照片中快速获取车牌信息时，手动记录既费时又易出错。车牌提取器是一款基于AI视觉识别技术的在线工具，能够自动从上传的图片中定位、分割并识别车牌字符，输出包括车牌号码、颜色、置信度及归属地在内的结构化数据。其处理的核心对象是符合中国机动车号牌标准（GA36-2018）的车辆牌照，涵盖蓝、黄、绿（新能源）、白等颜色类型。
问：车牌提取器支持哪些图片输入格式？
答：支持JPG、PNG等常见网络图片格式，建议图片大小不超过5MB。
问：识别置信度达到多少才算可靠？
答：置信度90%以上可视为高精度识别，低于80%建议重新拍摄清晰车牌照片。
请确保上传图片中车牌区域清晰可见，避免强反光、模糊或严重遮挡。图片处理过程中不存储用户数据，但建议勿上传包含个人隐私信息的车辆全景照片。对于分辨率低于100px或倾斜超过45度的车牌，识别准确率会显著下降。
为提高识别成功率，建议拍摄时使车牌占据图片1/4以上区域并保持正面角度。典型输入输出示例：输入含蓝色车牌"京A12345"的车辆前部照片，输出为{"号码":"京A12345","颜色":"蓝色","置信度":98.5%,"归属地":"北京市"}。本工具采用端到端深度学习模型，对新能源车牌绿色渐变背景有专门优化。
