Access the pixels of a region.
The operator fetch_coord 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 r1 <= r2fetch_coord 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 fetch_coord normally returns the value TRUE. If more than one connection component is passed an exception is caused. The behavior in case of empty input (no input regions available) is set via the operator set_system(::'no_object_result',<Result>:).
sobel_amp, threshold__, connection