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疑難排解#

問題：未偵測到相機#

Issue: The camera doesn't appear in the camera list or can't be opened.

Solution:

  • Verify the USB Type-C cable is properly connected to the camera.
  • Try a different USB port (preferably USB 3.0) and a different USB cable.
  • Check Device Manager for the camera device. If there's an unknown device, install the latest pylon SDK drivers.
  • Ensure the pylon SDK is properly installed.
  • Try unplugging and reconnecting the camera.

Issue: The camera doesn't appear in the camera list or can't be opened.

Solution:

  • Verify the USB Type-C cable is properly connected to the camera.
  • Try a different USB port (preferably USB 3.0) and a different USB cable.
  • Verify the camera is detected: lsusb | grep Basler
  • Ensure the pylon SDK is properly installed. Verify with which pylon.
  • Try unplugging and reconnecting the camera.

Issue: The camera doesn't appear in the camera list or can't be opened.

Solution:

  • Verify the USB Type-C cable is properly connected to the camera.
  • Try a different USB port (preferably USB 3.0) and a different USB cable.
  • Verify the camera is detected: lsusb | grep Basler
  • Ensure the pylon SDK is properly installed. Verify with which pylon.
  • Try unplugging and reconnecting the camera.

問題：影像品質不佳#

問題：影像出現雜訊、過暗或模糊。

解決方案：

  • 調整曝光，例如：

    camera.ExposureAuto.SetValue(ExposureAuto_Continuous)

  • 請確保照明充足。如有必要，請降低背光亮度。若使用具備主動立體影像功能的Stereo mini 攝影機，請確保環境光線不要過強。

  • 請選擇一個針對您的使用情境所優化的深度預設值。
  • 請使用軟布清潔鏡頭，並確保已取下鏡頭蓋。

問題：深度資料問題#

問題：深度資料無效、稀疏或不準確。

解決方案：

  • 確保場景中具有足夠的質感。
  • 若使用主動式立體聲（STM-502u、STM-952u），必要時請降低環境光線。
  • 請避免讓高反光表面直接面對相機。
  • 請選擇一個針對您的使用情境所優化的深度預設值。

問題：效能優化#

問題：擷取或處理過程感覺很慢，或是佔用太多資源。

解決方案：

  • 採用適當的抓取策略，例如：

    camera.StartGrabbing(pylon.GrabStrategy_LatestImageOnly)  # For real-time

  • 在可行情況下，請以原生格式處理影像，並針對您的應用程式採用高效的演算法。

  • 檢查 CPU 使用率、記憶體佔用量以及 USB 頻寬使用情況。

問題：DLL 或與 OpenCV 相關的依賴性問題#

Issue: The code execution cannot proceed because opencv_core.dll was not found.

Solution: Add the folder containing the OpenCV DLLs to your PATH environment variable.

See Adding OpenCV to PATH Environment Variable in the C++ Programmer's Guide.

Issue: opencv_core.so: cannot open shared object file.

Solution: Make sure OpenCV is properly installed and the library path is added to LD_LIBRARY_PATH.

Issue: opencv_core.so: cannot open shared object file.

Solution: Make sure OpenCV is properly installed and the library path is added to LD_LIBRARY_PATH.

問題：DLL 或 PCL 的依賴性問題#

Issue: The code execution cannot proceed because OpenNI2.dll was not found.

Solution: Download OpenNI2 and add the folder containing the OpenNI2.dll to your PATH environment variable.

Issue: OpenNI2.so: cannot open shared object file.

Solution: Install the required OpenNI2 library package.

Issue: OpenNI2.so: cannot open shared object file.

Solution: Install the required OpenNI2 library package.

問題：使用 PCL 時發生 CMake 配置錯誤（RelWithDebInfo）#

Issue: When compiling a program that uses PCL with cmake, an error message similar to Compiler: C++ compiler determination failed occurs.

Solution: When building PCL in the CMake GUI, use the Release configuration instead of RelWithDebInfo.

Issue: PCL compilation problems.

Solution: Use the libpcl-dev package instead of building from source.

Issue: PCL compilation problems.

Solution: Use the distribution's PCL package if available, or build from source with Release configuration.

問題：32 位元與 64 位元函式庫混用#

問題：混合使用 32 位元與 64 位元函式庫時發生連結器錯誤。

解決方案：請確保所有函式庫（pylon、OpenCV、PCL）均針對與您的應用程式相同的架構（要麼全是 32 位元，要麼全是 64 位元）進行編譯。

問題：在除錯模式下幀率過低#

問題：在「除錯模式」下執行時，幀率明顯低於「發行模式」。

解決方案：這是正常現象。請以「Release」模式編譯以獲得更好的效能。偵錯模式會產生額外的開銷。

問題：出現「裝置已連接」錯誤#

議題: 發生當機或程式異常終止後，應用程式無法連線至裝置，因為它回報 Device already in use.

解決方案：

  • 重新啟動 pylon 執行環境，或重新啟動系統。
  • 檢查是否有其他程序仍與該裝置保持連線。