Access the pixels of a region.
The operator get_region_points returns the region data in the form of coordinate lists. The coordinates are sorted in the following order:
(r1,c1) <= (r2,c2) := r1 < r2 oder r1 = r2 und c1 <= c2
get_region_points returns the coordinates in the form of tuples.
An empty region is passed as empty tuple.
Only one region may be passed.
|
Region (input_object) |
region -> object |
| This region is accessed. | |
|
Rows (output_control) |
coordinates.y-array -> integer |
| Line numbers of the pixels in the region | |
|
Columns (output_control) |
coordinates.x-array -> integer |
| Column numbers of the pixels in the region. | |
| Number of elements: Columns == Rows | |
The operator get_region_points normally returns the value 2 (H_MSG_TRUE). If more than one connection component is passed an exception handling is caused. The behavior in case of empty input (no input regions available) is set via the operator set_system('no_object_result',<Result>).
get_region_points is reentrant and processed without parallelization.
sobel_amp, threshold, connection
Foundation
