Gray value offset for template.
set_offset_template adds a gray value offset to the template to eliminate gray value changes in the image. The parameter GrayOffset specifies a difference relative to the gray values of the pattern when it was created with create_template (not relative to the last call of set_offset_template). The values of GrayOffset has to be chosen according to the gray values of the image: A brighter image results in a positive value, a darker image results in a negative value. set_offset_template has to be called each time the gray values of the image changes. The gray values can be meassured in a reference area using intensity or min_max_gray
|
TemplateID (input_control) |
template -> integer |
| Template number. | |
|
GrayOffset (input_control) |
number -> integer |
| Offset of gray values. | |
| Default value: 0 | |
| Suggested values: -10, -5, -2, -1, 0, 1, 2, 5, 10 | |
| Typical range of values: -255 <= GrayOffset <= 255 | |
| Minimum increment: 1 | |
|
Recommended increment: 1 | |
If the parameter values are correct, the operator set_offset_template returns the value 2 (H_MSG_TRUE). If necessary, an exception handling is raised.
set_offset_template is processed under mutual exclusion against itself and without parallelization.
create_template, adapt_template, read_template
best_match, best_match_mg, best_match_rot, fast_match, fast_match_mg
Matching
