Oil & Gas facilities are extremely huge and have complex industrial structures that are documented using thousands of printed sheets. During the last years, it has been a tendency to migrate these paper sheets towards a digital environment, with the final end of regenerating the original computer-aided design (CAD) projects which are useful to visualise and analyse these facilities through diverse computer applications. Usually, this was done manually by re-sketching each page using CAD applications. Nevertheless, some applications have appeared which generate the CAD document automatically given the paper sheets. In this last case, the final document is always verified by an engineer due to the need of being a zero-error process. Since the need of an engineer is absolutely accepted, we present a new method to reduce the required engineer working time. This is done by highlighting the digitised components in the CAD document that the automatic method could have incorrectly identified. Thus, the engineer is required only to look at these components. The experimental section shows our method achieves a reduction of approximately 40% of the human effort keeping a zero-error process.

石油和天然气设施非常庞大，具有复杂的工业结构，使用数千张印刷纸进行记录。在过去的几年中，将这些纸张移植到数字环境已成为一种趋势，其最终目的是重新生成原始的计算机辅助设计（CAD）项目，该项目可用于通过各种计算机应用程序可视化和分析这些设施。通常，这是通过使用CAD应用程序重新绘制每个页面来手动完成的。但是，出现了一些应用程序，这些应用程序会在给定纸张后自动生成CAD文档。在后一种情况下，由于需要零错误流程，因此最终文档始终由工程师验证。由于工程师的需求已被绝对接受，我们提出了一种减少所需工程师工作时间的新方法。这是通过突出显示CAD文档中自动方法可能已错误识别的数字化组件来完成的。因此，工程师仅需查看这些组件。实验部分显示，我们的方法在保持零错误过程的情况下，减少了约40％的人力。