Axtel has created the next generation of Machine Vision specific development tools. Machine Vision Express™ enables computers to “see” like a human. What used to be a very complex task was greatly simplified and is now affordable for everyone. Applications run on PCs or smart cameras, they may address such tasks as: inspection, counting, gauging, positioning, identification, selection, surveillance and access control.

Machine Vision Express™ offers three development platforms, GUI, Python and C++. Each platform accommodates individual experiences, from simple drag and drop of functions with editor and visual simulator, to Python based scripting, as well as complex C++ programming. The library includes such advanced features as Optical Character Recognition (OCR), Pattern Matching and Barcode Recognition.

Machine Vision Express™ enables computers to "see" like a human.

Machine Vision - FAQ - MVE GUI

Why do MVE GUI based scripts always contain an Initialization Macro?

The simple answer is: they save time and thereby improve overall system performance.

Here is why:
Scripts are run over and over again, at least once for every product passing by the camera. If the structure of a script requires a number of "Setup" steps, then this section of the script should only be processed once and not every time a product passes by the camera. That is why all steps included within the Initialization Macro are run only once, at the time the script is run for the first time. During subsequent runs of the same script all steps inside the Initialization Macro are skipped.

Example:
It may be necessary to compare a "Master Pattern" with a "Product Pattern" every time a product passes by the camera. Given this situation it is useful to create the "Master Pattern" only once. In this situation the Initialization Macro could be used to load the "Master Image" and create the "Master Pattern" from it. Thus, the "Master Pattern" does not need to be created over and over when subsequent products pass by the camera.