Description This function will morphologically open the grayscale image. The function works for only 8 bit per pixel images. Morphological opening of a grayscale image is defined as the erosion of that image followed by the dilation of the eroded image. The opening filter operation will reduce small positive oriented graylevel regions and positive graylevel noise regions generated from salt and pepper noise.
Examples
Syntax RetVal = [BiFilter.]GrayScaleOpening hDib Mask Mheight Mwidth MPx MPy iShowProgress hWnd
Returns RetVal LONGLONG The handle of new filtered DIB, 0 if an error occurred, or -1 if the BIFilter.dll does not installed.
Remarks hDib LONGLONG Handle of the image to filter.
Mask short* This parameter specifies the structuring function used by the filtering.
Mheight short Height of structuring matrix.
Mwidth short Width of structuring matrix.
MPx short X coordinate of structuring matrix origin.
MPy short Y coordinate of structuring matrix origin.
iShowProgress short This parameter specifies the displaying of the progressbar and the preview dialog.
Available values:
DISPLAY_NONE (0) - The progressbar and the preview dialog will not display before filtering.
DISPLAY_PROGRESS (1) - The progressbar will display during filtering procedure.
DISPLAY_DIALOG (2) - The preview dialog will display before filtering. This dialog shows the part of the image before and after filtering.
DISPLAY_BOTH (3) - The progressbar and the preview dialog will display.
IMPORTANT: The preview dialog will only display, if there is BIDlgs32.dll installed.
hWnd LONGLONG Handler of the parent window.
See Also