Edge Detection

The 'Low Threshold' property sets the minimum normalized gradient magnitude (as a percentage of the maximum possible value) for a pixel to be considered as a potential edge. Pixels with gradient values below this threshold are rejected. Pixels with values between the low and high thresholds are accepted only if they are connected to a strong edge.

• Lower values increase sensitivity, detecting more edges (including weak or noisy ones).
• Higher values reduce sensitivity, detecting only strong, prominent edges.

Tuning Guidance:

• Start with the default value and adjust based on the amount of detail required.
• Review diagnostic images to ensure important edges are detected without excessive noise.

The 'High Threshold' property sets the maximum normalized gradient magnitude (as a percentage of the maximum possible value) for a pixel to be automatically accepted as an edge. Pixels above this threshold are always considered edges.

• Lower values increase the number of detected edges.
• Higher values restrict detection to only the strongest edges.

Tuning Guidance:

• The 'High Threshold' should always be greater than or equal to the 'Low Threshold'.
• Adjust to control the trade-off between edge completeness and noise.

Can be one of the following values:

The 'Mask Size' property determines the size of the convolution kernel used to compute image gradients.

• 3x3 provides finer edge localization but is more sensitive to noise.
• 5x5 provides more smoothing, reducing noise but potentially blurring fine details.

Tuning Guidance:

• Use 3x3 for high-resolution or clean images.
• Use 5x5 for noisy or low-resolution images.

The 'Dilation Factor' property controls the width of detected edges in the output image.

• A value of 0 produces edges that are 1 pixel wide.

• A value of N produces edges that are 2N+1 pixels wide.

• Increase to make edges more prominent for downstream processing or feature extraction.

• Decrease to preserve fine edge detail.

Tuning Guidance:

• Use higher values if subsequent steps require thick or easily segmented edges.
• Use 0 for precise edge localization.

The 'Command Type Name' property shows the user-friendly name of the IP Command as it appears in the Grooper UI. This helps users identify which command is being configured or executed, especially when working with IP Profiles containing multiple commands.

This property is read-only and is automatically set based on the command's type.

The 'Supported Pixel Formats' property lists the image pixel formats that the IP Command can process. If an image does not match one of these formats, the command will be skipped for that image.

• By default, all pixel formats are supported unless a derived command restricts this list.
• Example formats include Pixel8bppGrayscale, Pixel24bppBgr, and Pixel1bppIndexed.

Use this property to verify compatibility when building IP Profiles or troubleshooting why a command did not execute.