从文档中删除文本，只留下模板

Question

我使用doctr库来识别文本并获取pdf文档中文本的坐标。但是，我根本不需要这个文档中的文本，只需要文档模板。

我正在寻找如何删除文本的解决方案，并决定最好遍历获得的坐标并删除这些坐标中的文本。

我开始研究如何用Python实现这个。不幸的是，信息不多，但我设法找到了这个视频https://www.youtube.com/watch?v=3RNPJbUHZKs。这个原则对我来说更加清晰，并且我尝试去实现它。但问题是：

1. 该视频使用 keras_ocr 进行文本识别，x 和 y 坐标采用不同的数据格式，与来自 doctr 的坐标格式不同
2. 当文档中文本较多时（通常超过100条），程序运行时间超过10分钟。如您所知，这很长。

关于坐标：

1. 在doctr中，点(0,0)位于左上角。
2. 我收到的文本坐标的格式为（（x1，y1），（x2，y2）。其中x1，y1是识别的单词的左上点，x2，y2是识别的单词的右下点.

下面是一个例子。我拿这个文件

我通过doctr运行这个文档。生成的文件将包含单词和相应的坐标。我只对坐标感兴趣，所以我将它们提取到一个单独的列表中

coordinates = [((50.66015624999998, 179.25390625), (96.70703124999997, 198.98828125)), ((53.949218750000014, 235.16796875), (111.50781249999999, 254.90234375)), ((53.949218750000014, 263.125), (129.59765625000003, 281.21484375)), ((53.949218750000014, 291.08203125), (170.7109375, 310.81640625)), ((52.30468750000003, 317.39453125), (103.28515624999999, 337.12890625)), ((53.949218750000014, 366.73046875), (111.50781249999999, 386.46484375)), ((53.949218750000014, 394.6875), (129.59765625000003, 412.77734375)), ((52.30468750000003, 422.64453125), (172.35546875, 447.3125)), ((50.66015624999998, 447.3125), (106.57421875000003, 471.98046875)), ((53.949218750000014, 499.9375), (111.50781249999999, 519.671875)), ((53.949218750000014, 526.25), (129.59765625000003, 545.984375)), ((53.949218750000014, 557.49609375), (170.7109375, 577.23046875)), ((52.30468750000003, 596.96484375), (134.53124999999997, 615.0546875)), ((137.82031250000003, 596.96484375), (282.53906249999994, 615.0546875)), ((76.97265625000001, 687.4140625), (175.64453125000003, 705.50390625)), ((175.64453125000003, 687.4140625), (241.42578125, 705.50390625)), ((241.42578125, 687.4140625), (317.07421875, 705.50390625)), ((479.8828125, 180.8984375), (553.88671875, 212.14453125)), ((552.2421875, 179.25390625), (603.22265625, 213.7890625)), ((606.51171875, 180.8984375), (723.2734375, 212.14453125)), ((943.6406249999999, 180.8984375), (1001.19921875, 207.2109375)), ((1002.8437499999999, 180.8984375), (1017.64453125, 203.921875)), ((1022.578125, 179.25390625), (1048.890625, 203.921875)), ((295.6953125, 213.7890625), (340.09765625, 235.16796875)), ((333.51953125, 212.14453125), (391.07812500000006, 236.8125)), ((647.625, 235.16796875), (682.16015625, 256.546875)), ((680.5156250000001, 235.16796875), (705.18359375, 256.546875)), ((705.18359375, 236.8125), (767.67578125, 256.546875)), ((770.96484375, 236.8125), (849.90234375, 256.546875)), ((769.3203125, 289.4375), (828.5234375, 314.10546875)), 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如您所见，这是一个非常大的坐标列表，主要问题是视频中的算法运行缓慢。也许你可以告诉我如何解决我的问题。

也就是说，在输出时，我想收到这样的文件

Answer 1

即使速度很慢，我也会坚持良好的结果OCR 的问题是众所周知，它对于正确覆盖所有文本来说是不可靠的，因此应始终通过删除真实文本然后重新打印到图像来完成编辑，因为快速完成的其他方式会很差例如 OCR 后立即完成的操作。