光学字符识别（OCR）是计算机视觉最古老也最实用的任务之一。早期OCR只负责“识别文字”；而如今，随着视觉语言模型（VLM）的兴起，它已经变成能“理解文档”的智能系统。

This tool converts currencies on a specific date using our historical rates database. If no dates or currencies have been entered, the form defaults to yesterday and Pound to Euro exchange rate. We've ...