TYPE: COP
TITLE: Edge COP

This operation detects edges in the input image.

Middle click on the dialog '?' help for more help on maskable operations.

Parameters:
Edge Detect
    Type            - The edge detection method.
	Prewitt       - A 3x3 kernel detector. 
	Sobel         - A 3x3 kernel detector with higher contrast.
	Marr-Hildreth - A variable kernel detector. The remaining
                        parameters control the behaviour of this
                        detector.
    Size            - The detection radius of the Marr-Hildreth detector.
    Feature Size    - The feature size to detect (fraction of the detection
		      radius).
    Noise Threshold - The tolerance for edge noise. Values above zero
		      start removing "noisy" edges.

Mask & Plane Scope, Frame Scope
    Overview - See extra help (Middle click on the dialog '?' help).

Local Variables:
    L   - Sequence length
    S   - Start of sequence
    E   - End of sequence
    IL  - Input sequence length
    SR  - Sequence frame rate
    NP  - Number of planes in sequence
    W,H - Width and height of image
    I   - Image index (0 at start frame)
    IT  - Image time (0 at start frame)
    AI  - Current plane array index
    PI  - Current plane index
    PC  - Num of channels in current plane

See Also: Edge Blur (edgeblur)
