Contrast-Brightness-Gamma

This function block lets you adjust the overall contrast, brightness, and gamma of an image using three simple sliders. It's ideal for quick visual tuning or as a preprocessing step before further analysis.

📥 Inputs (sockets)

• Image Any Input image to be adjusted.

📤 Outputs (sockets)

• Image Any Adjusted image after contrast, brightness, and gamma are applied.

🕹️ Controls

• Contrast Value Slider to increase or decrease image contrast.

• Brightness Value Slider to shift image brightness up or down.

• Gamma Value Slider to apply gamma correction for midtone adjustments.

🎨 Features

• Real-time visual tuning via sliders for fast experimentation.

• Combined operations: contrast and brightness are applied first, followed by gamma correction for smooth tonal control.

• Works with any image format supported by the system (color or grayscale).

📝 Usage Instructions

1. Provide an image to the Image Any input socket.

2. Move the Contrast Value slider to adjust contrast. Values toward the positive side increase contrast; negative values soften it.

3. Move the Brightness Value slider to brighten or darken the image.

4. Tweak the Gamma Value slider to correct midtones without changing extremes too much.

5. The processed image is available from the Image Any output socket for preview or further blocks.

📊 Evaluation

When the block runs, it produces a single adjusted image reflecting current slider positions. Use this output to feed downstream analysis, visualization, or storage blocks.

💡 Tips and Tricks

• For noisy images, use the Denoising block before this block to avoid amplifying noise when increasing contrast.

• If you want automatic improvements, try combining this block with Auto Contrast to get a quick baseline before manual fine‑tuning.

• To speed up processing on very large images, put Image Resizer upstream to reduce image size before adjustment.

• Use Show Image after this block to inspect results in a larger viewer window.

• When producing outputs for logging or records, connect the result to Image Logger or Image Write to save adjusted frames.

• Use Load Image, Camera USB, or Camera IP (ONVIF) as typical upstream image sources depending on your workflow.

🛠️ Troubleshooting

• If the image looks overly contrasty or clipped, reduce Contrast Value or lower Brightness Value and reapply moderate Gamma Value adjustments.

• If colors look strange after heavy adjustments, try applying Auto Contrast or Normalize Image to re-balance pixel ranges.

• If real-time responsiveness is slow, reduce the input image resolution with Image Resizer before adjusting.