GrayScaleOpening  Method

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

Description: jozsigray                                                        Description: jozsiopened

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