Deallocation of the memory of all templates.
The operator clear_template deallocates the memory of all template that were created by create_template or create_template_rot. After calling clear_all_templates, no template can be used any longer.
clear_all_templates always returns 2 (H_MSG_TRUE).
clear_all_templates is processed completely exclusively without parallelization.
create_template, create_template_rot, read_template, write_template
Template matching
