Invert Image

This function block inverts the pixel values of the incoming image, producing a visual negative of the input. It works with grayscale and color images and is useful for highlighting features or preparing images for further binary/shape processing.

📥 Inputs (sockets)

• Image Any Accepts any image (grayscale or color) to be inverted.

📤 Outputs (sockets)

• Image Any The resulting image with inverted pixel values.

🕹️ Controls

This block has no interactive controls or widgets.

🎨 Features

• Works with both grayscale and color images.

• Fast per-frame operation suitable for real-time previews.

• Preserves image dimensions and channel count while inverting pixel values.

📝 Usage Instructions

1. Connect an image-producing block to the Image Any input.

2. Read the inverted image from the Image Any output and feed it to visualization or analysis blocks.

📊 Running behavior

When the block runs, it processes the latest input image and outputs a version where pixel intensities are inverted. If no image is present, the last valid image may be preserved for display.

💡 Tips and Tricks

• Use Show Image to preview the inverted result during debugging or tuning.

• Combine with Image Threshold to invert a thresholded image for easier contour or blob detection.

• Use Apply Mask together with this block to invert only selected regions of an image.

• Crop the area of interest first with Image ROI or Image ROI Select, then invert only that region to limit processing or emphasize specific features.

• Follow inversion with Blur or Denoising if inversion amplifies noise before downstream analysis.

🛠️ Troubleshooting

• If the output looks unexpected, confirm the incoming image format (grayscale vs. color) using Image Resolution and Channel Value.

• If colors appear unusual after inversion, try applying Color Space or Adjust Colors before or after inversion to restore expected color balance.