the 3D model create finished , i use tool open the obj file, why the 3D model is reverseed[question]

[q449278118]

Describe the problem A clear and concise description of what the problem is. the 3D model create finished , i use tool open the obj file, why the 3D model is up-down Screenshots If applicable, add screenshots to help explain your problem. this is reverse side this is front, I reverse the upper picture

Dataset If applicable, add a link or few images to help better understand where the problem may come from.

Log If applicable, copy paste the relevant log output (please embed the text in a markdown code tag "```" )

Desktop (please complete the following and other pertinent information):

• OS: [e.g. win 10, osx, ]
• Python version [e.g. 2.6]
• Qt/PySide version [e.g. 5.12.4]
• Meshroom version: please specify if you are using a release version or your own build
  • Binary version (if applicable) [e.g. 2019.1]
  • Commit reference (if applicable) [e.g. 08ddbe2]

Additional context Add any other context about the problem here.