Expand a region starting at a given line.
expand_line generates a region by expansion, starting at a given line (row or column). The expansion is terminated when the current gray value differs by more than Threshold from the mean gray value along the line (ExpandType = 'mean') or from the previously added gray value (ExpandType = 'gradient').
|
Image (input_object) |
image(-array) -> object : byte |
| Input image. | |
|
RegionExpand (output_object) |
region(-array) -> object |
| Extracted segments. | |
|
Coordinate (input_control) |
integer -> integer |
| Row or column coordinate. | |
| Default value: 256 | |
| Suggested values: 16, 64, 128, 200, 256, 300, 400, 511 | |
| Restriction: Coordinate >= 0 | |
|
ExpandType (input_control) |
string -> string |
| Stopping criterion. | |
| Default value: 'gradient' | |
| List of values: 'gradient', 'mean' | |
|
RowColumn (input_control) |
string -> string |
| Segmentation mode (row or column). | |
| Default value: 'row' | |
| List of values: 'row', 'column' | |
|
Threshold (input_control) |
number -> real / integer |
| Threshold for the expansion. | |
| Default value: 3.0 | |
| Suggested values: 0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 13.0, 17.0, 20.0, 30.0 | |
| Typical range of values: 1.0 <= Threshold <= 255.0 (lin) | |
| Minimum increment: 1.0 | |
|
Recommended increment: 1.0 | |
| Restriction: (Threshold >= 0.0) && (Threshold <= 255.0) | |
#include "HIOStream.h"
#if !defined(USE_IOSTREAM_H)
using namespace std;
#endif
#include "HalconCpp.h"
int main (int argc, char *argv[])
{
HImage image (argv[1]),
gauss;
HWindow win;
win.SetDraw ("margin");
win.SetColored (12);
image.Display (win);
gauss = image.GaussImage (5);
HRegionArray reg = gauss.ExpandLine (100, "mean", "row", 5.0);
reg.Display (win);
win.Click ();
return (0);
}
expand_line is reentrant and automatically parallelized (on tuple level).
gauss_image, smooth_image, anisotropic_diffusion, median_image, affine_trans_image, rotate_image
intersection, opening, closing
regiongrowing_mean, expand_gray, expand_gray_ref
Foundation
