text: Title: 报错
  Body: ### Expected Behavior
  
  报错
  
  ### Actual Behavior
  
  Trimap did not contain background values
  
  ### Steps to Reproduce
  
  Trimap did not contain background values
  
  ### Debug Logs
  
  ```powershell
  Trimap did not contain background values
  ```
  
  ### Other
  
  _No response_