TIEVisionImage.getLineMask
Declaration
function getLineMask(directions: TIEVisionLineDirections = ievLinesBoth; minLength: int32_t = 0; maxThickness: int32_t = 0): TIEVisionImage; safecall;Description
Returns an 8-bit gray mask of the straight horizontal and vertical lines of a document image (such as form and table lines and underlines): 255 (white) for line pixels and 0 (black) elsewhere.The parameters are the same as removeLines. The current image is not changed.
The mask can be used to find the cells of a table (e.g. with findContours), or to show which lines removeLines would remove.
Demo
 | Demos\ImageEditing\EveryMethod\EveryMethod.dpr |
Example
Also see: Automated Samples
// Show the lines of a formimg := ImageEnView1.IEBitmap.GetIEVisionImage().getLineMask();
ImageEnView1.IEBitmap.AssignIEVisionImage( img );
ImageEnView1.Update();