HDevelop User's Manual

Chapter 2
Graphical User Interface
HDevelop is an interactive tool to create image analysis programs. It comprises an editor, an
interpreter with debug functions, a management unit for variables (iconic and control data) and
extensive possibilities to visualize iconic data. You may use HDevelop for rapid prototyping
as well as for developing complete programs. You create a program by choosing operators
and specifying their parameters. To do so, you may use default values or values proposed by
HDevelop. After having selected the appropriate parameters, you execute the operator and insert
it into the program text (i.e., the program window). You can modify and verify your generated
program interactively. All intermediate results (variables) are displayed graphically (images,
regions and polygons (XLD)) or textually (numbers and strings).
After starting the tool as described in section 1.2, the main window, which includes the following
windows, will appear on your screen (see also figure 2.1):
¯ a program window,
¯ an operator window,
¯ a variable window, and
¯ a graphics window.
In the following you will learn the functionality of these five windows and their effective use
while creating HDevelop programs.
Please note that in the UNIX environment the main window, the program window, and the
operator window are combined into one window. Thus, there are only three windows.
2.1 Interacting with HDevelop
You interact with HDevelop through its graphical user interface. With the mouse you can manipulate
visual controls such as menus or buttons in the HDevelop windows.
2.2 Mouse Handling
You can use the mouse as follows:
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