SpatialFilterType property (ILEADRasterDlgImgEfx)

Syntax	SpatialFilterConstants SpatialFilterType
Overview	Refer to Using Imaging Common Dialogs

Remarks

Gets or sets the spatial filter type used with the Spatial Filter dialog boxes.

If a user selects a spatial filter from one of the Spatial filter dialog boxes, the SpatialFilterType property is set to a value that corresponds to the filter chosen.

The Spatial filter dialog boxes are:

ShiftDifferenceFilter dialog box:	The spatial filter applies shift-and-difference edge detection. All pixels not on the detected edges are changed to black. Choose the appropriate value for diagonal, horizontal, or vertical detection. Possible values are: SHIFTDIFF_DIAG SHIFTDIFF_HORZ SHIFTDIFF_VERT
GradientFilter dialog box:	Gradient filters detect edges. All pixels not on the detected edges are changed to black. Choose the appropriate value for the direction of the effect. Possible values are: GRADIENT_N GRADIENT_NE GRADIENT_E GRADIENT_SE GRADIENT_S GRADIENT_SW GRADIENT_W GRADIENT_NW
LaplacianFilter dialog box:	Laplacian filters apply Laplacian line detection. There are three omnidirectional filters and three bi-directional ones. All pixels not on the detected lines are changed to black. Possible values are: LAPLACE_1 LAPLACE_2 LAPLACE_3 LAPLACE_DIAG LAPLACE_HORZ LAPLACE_VERT
SobelFilter dialog box:	Sobel filters apply Sobel edge detection. All pixels not on the detected edges are changed to black. (The usage is the same as Prewitt, but the algorithm is different.) Choose the appropriate value for horizontal or vertical detection. Possible values are: SOBEL_HORZ SOBEL_VERT
PrewittFilter dialog box:	The Prewitt filter applies Prewitt edge detection. All pixels not on the detected edges are changed to black. (The usage is the same as Sobel, but the algorithm is different.) Choose the appropriate value for horizontal or vertical detection. Possible values are: PREWITT_HORZ PREWITT_VERT
LineSegmentFilter dialog box:	The Line Segment filter applies line segment line detection. You can use this filter to find line discontinuities in an image. All pixels not on the detected line segments are changed to black. Choose the appropriate value for horizontal, vertical, left-to-right diagonal, or right-to-left diagonal detection. Possible values are: LINESEG_HORZ LINESEG_VERT LINESEG_LTOR LINESEG_RTOL