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Handwritting recognition for some chemistry-related characters. Use yolov3 to cut strokes. Balance chemical equations with valence considered. Generate topological structure and conformation for all isomers of an n-C alkane, enantiomers not considered. Render stick-and ball model of these isomers.

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ChemInk

功能

  • 处理手写化学方程式,仅包含字符,不具备结构式处理能力

原理简述

  1. 用 yolov3-tiny 目标检测模型做字符切割,在很小的程度上支持连笔

  2. 用 densenet 结构的卷积网络对检测框中的字符进行二次分类

  3. 用字典按位加权的方法从语言层面进一步筛选合理结果

  4. 用判断无根树同构的方法生成饱和烷烃的所有非光学同分异构体

  5. 使用位压缩,实现在 16GB 内存的家用 PC 上获取 6 亿多个 28 碳烷烃的异构体

  6. 用化合价表设计了相对完备的方程式配平方法

  7. 用旋转基本图元的方法进行简单的球棍模型渲染

  8. 由 opencv 推理目标检测网络、fdeep 推理单字符卷积网络,由 glu 提供三维基本图元

阶段性完结【演示】

结果演示

链接

目标检测实现的结构式识别(半成品)

路线图 2021:接入 COCR-dev 分支

  1. 共享 libtorch 的 crnn 和 yolo 模型
  2. 替换掉 chemink 目录下的代码
  3. 用 qt3d 去掉 glu 依赖

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Handwritting recognition for some chemistry-related characters. Use yolov3 to cut strokes. Balance chemical equations with valence considered. Generate topological structure and conformation for all isomers of an n-C alkane, enantiomers not considered. Render stick-and ball model of these isomers.

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