Issue:

When the image contains lines in colors other than black or white (especially yellow), they may fail to be recognized or get ignored during vectorization.
How to resolve this?

Solution:

  1. Go to the Ribbon Smart tab and click Vectorization Configure (or execute the VECTORIZATIONOPTIONS command) to enter the configuration interface.
  2. Click Edit, select Local Threshold (instead of Global Threshold), and click OK. Then proceed with the raster image vectorization operation.


CN Solution★中望CAD光栅图像矢量化为什么无法识别部分线条
JP Solution

★Why does ZWCAD raster image vectorization fail to recognize some lines：https://confluence.zwcad.com/pages/viewpage.action?pageId=316574655