Camera USB

This function block provides a straightforward way to interact with USB webcams connected to your system. It allows users to select a camera, adjust its resolution, and view the camera feed.

📥 Inputs

Activate Signal This signal activates the camera, allowing frames to be captured.

Release Signal This signal releases the camera resources when they are no longer needed.

📤 Outputs

Camera Frame This output provides the live image frame captured by the connected USB camera.

🕹️ Controls

Scan Connected USB Cameras A button to initiate scanning for all connected USB cameras.

Select USB Camera A dropdown menu allowing users to select from the list of detected USB cameras.

Camera Resolution A dropdown menu to select the desired resolution for the camera feed.

Current Resolution This label displays the currently set resolution of the selected camera.

Open Advanced Setting A button that opens a window for adjusting advanced camera settings.

🎨 Features

Automatic Camera Detection Automatically detects and populates the list of USB cameras connected to your system.

Dynamic Resolution Adjustment Users can change the resolution of the camera feed on-the-fly.

Real-time Feedback Displays the current resolution setting dynamically as it's adjusted.

📝 Usage Instructions

1. Scan for Cameras: Click on the Scan Connected USB Cameras button to detect all available USB cameras.

2. Select Camera: Choose a camera from the dropdown menu that appears after scanning.

3. Set Camera Resolution: Choose the desired resolution from the Camera Resolution dropdown.

4. Activate Camera: Once the camera is selected, send the Activate Signal to start receiving frames.

5. Release Camera: If the camera is no longer needed, send the Release Signal to free up resources.

📊 Evaluation

When executed, the function block continuously captures frames from the selected USB camera. It provides the latest frame as output and updates the current camera status.

💡 Tips and Tricks

Ensuring Proper Functionality

If the camera feed does not appear, ensure that the camera is properly connected and operational. You may also want to verify if other applications are utilizing the camera.

Optimal Resolution Setting

Choosing a lower resolution can increase the frame rate if the camera is not capable of handling a high resolution smoothly. Adjust based on your system's performance and requirements.

Advanced Settings

The Open Advanced Setting feature can be used to access additional camera configuration options such as exposure and white balance for a better image quality.

Frame Rate Issues

If you experience slow frame rates, ensure that no other applications are using the camera, and consider reducing the resolution, as higher resolutions may limit the frame rate performance.

🛠️ Troubleshooting

No Cameras Found

If no cameras are detected, check the USB connections and ensure that the camera drivers are installed and functioning correctly.

Blank Frames

If you are receiving blank frames, the camera might need resetting. Click on the Release Signal to clear the camera and then re-activate it. Consider monitoring the camera for any blockage or obstructions.