HDevelop User's Manual

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2 CHAPTER 1. INTRODUCING HDEVELOP help is based on an internet browser such as Netscape Navigator or Microsoft Internet Explorer. ¾ HDevelop comprises a program interpreter with edit and debug functions. It supports programming features, such as loops and conditions. Parameters can be changed even while the program is running. ¾ HDevelop immediately displays the results of operations. You can try different operators and/or parameters, and immediately see the effect on the screen. Moreover, you can preview the results of an operator without changing the program. ¾ Several graphical tools allow to examine iconic and control data online. For example, you can extract shape and gray value features by simply clicking onto the objects in the graphics window, or inspect the histogram of an image interactively and apply real-time segmentation to select parameters. ¾ Variables with an automatic garbage collection are used to manage iconic objects or control values. 1.2 Example Session To get a first impression how to use HDevelop, you may have a look at the following example session. Every important step during the image processing session is explained in detail. Thus, having read this chapter thoroughly, you will understand the main HALCON ideas and concepts. Furthermore, you will learn the main aspects of HDevelop’s graphical user interface (for more details see chapter 2). A simple introduction can be found the in manual Getting Started with HALCON as well. In this example, the task is to detect circular marks attached to a person’s body in a gray value image. The program can be found in the file ±ÀÄÇÆÊÇÇÌ±ÜÑÔÐ×ÀÚÐÓÔÅÒÙÐ×ÀÚÐÓÔÑÖ×ºÚ You start HDevelop under Windows NT or Windows 2000 by calling ËØÖØ º ÈÖÓÖÑ× º ÅÎÌ ÀÄÇÆ º ÀÚÐÓÔ Under UNIX, HDevelop is started from the shell like any other program 1 . Optionally, an application name can be specified as a parameter: ÚÐÓÔ ÐºÚ This application is then loaded. This is identical to an invocation of HDevelop without any parameter and a subsequent loading of the application. If you want to run the application immediately after it has been loaded, invoke HDevelop as follows: ÚÐÓÔ ¹ÖÙÒ ÐºÚ This is equivalent to starting HDevelop, loading the application, and then pressing ÊÙÒ in the menu bar of HDevelop. After starting HDevelop, your first step is to load the image ÑÖ×ºØ from the directory ±ÀÄÇÆÊÇÇÌ±Ñ×. You may perform this step in three different ways: 1 The necessary settings for the operation system are described in the manual Getting Started with HALCON. HDevelop / 2000-11-16
1.2. EXAMPLE SESSION 3 Figure 1.1: Screen configuration after image loading. ¯ First, you may specify the operator name Ö Ñ in the operator window’s input text field. ¯ Secondly, you may select this operator in ÇÔÖØÓÖ× º Ð º ÁÑ× º Ö Ñ. ¯ The most often used and most convenient way is the third one. Here, you open the image selection box pressing menu item Ð º Ê ÁÑ º ººº The menu Ð º Ê ÁÑ contains several predefined directories, one of which is ±ÀÄÇÆÊÇÇÌ±Ñ×. Usually, this directory will be ÈÖÓÖÑ Ð×ÅÎÌÀÐÓÒÑ×. Select this directory by pressing the appropriate menu button. Now you can browse to your target directory and choose a file name. By clicking the button ÇÔÒ, a dialog window appears, in which you may specify a (new) name for the iconic variable which contains the image you are about to load. The variable will be used later in the program to access this image. To facilitate the specification process, HDevelop offers you a default variable name, which is derived from the image’s file name. Pressing the button Ç transfers the operator into the program window and inserts a first program line, similar to the following line, into your program: ÖÑ ´ÅÖ×¸³ÈÖÓÖÑ Ð×ÅÎÌÀÐÓÒÑ×ÑÖ×ºØ³µ This new program line is executed immediately and the loaded image is displayed in the active graphics window. Please note the double backslashes, which are necessary since a single backslash is used to quote special characters (see page 61). In our example we change the default for the name from ÅÖ× to Ö×ØÓ. HALCON 6.0
Page 1 and 2: HALCON Version 6.0 MVTec Software G
Page 3 and 4: About This Manual This manual is a
Page 5 and 6: Contents 1 Introducing HDevelop 1 1
Page 7 and 8: Contents iii comment . . . . . . .
Page 9: Chapter 1 Introducing HDevelop In f
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Page 15 and 16: 1.3. ADDITIONAL SOURCES OF INFORMAT
Page 17 and 18: Chapter 2 Graphical User Interface
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Page 21 and 22: 2.3. MAIN WINDOW 13 A security chec
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Page 27 and 28: 2.3. MAIN WINDOW 19 and not HDevelo
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Page 47 and 48: 2.3. MAIN WINDOW 39 output paramete
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Page 51 and 52: 2.3. MAIN WINDOW 43 ËÙ×ØÓÒ×
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Page 57 and 58: 2.5. OPERATOR WINDOW 49 The program
Page 59 and 60: 2.5. OPERATOR WINDOW 51 Please refe
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2.6. VARIABLE WINDOW 53 operator ha
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2.6. VARIABLE WINDOW 55 aspect rati
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2.7. GRAPHICS WINDOW 57 Figure 2.38
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Chapter 3 Language The following ch
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3.2. CONTROL TYPES AND CONSTANTS 61
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3.4. OPERATIONS ON ICONIC OBJECTS 6
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3.5. EXPRESSIONS FOR INPUT CONTROL
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3.6. RESERVED WORDS 77 ÓÖ, ÜÓÖ
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3.8. LIMITATIONS 79 In the followin
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Chapter 4 Code Generation The idea
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4.1. CODE GENERATION FOR C++ 83 Ì
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4.1. CODE GENERATION FOR C++ 85 tha
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4.2. CODE GENERATION FOR VISUAL BAS
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4.3. CODE GENERATION FOR C 89 4.3 C
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4.4. GENERAL ASPECTS OF CODE GENERA
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Chapter 5 Program Examples This cha
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5.2. CAPILLARY VESSEL 95 ÚÐÓ×Û
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5.2. CAPILLARY VESSEL 97 Figure 5.3
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5.3. PARTICLES 99 each. Now it is e
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5.4. ANNUAL RINGS 101 ÚÐÖÛÒÓ
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5.5. BONDING 103 Figure 5.9: Exampl
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5.7. DEVICES 105 Figure 5.11: Calib
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5.7. DEVICES 107 Figure 5.13: Resis
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5.8. CELL WALLS 109 Figure 5.15: Mi
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5.10. EXCEPTION HANDLING 111 Figure
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5.11. ROAD SCENE 113 any case. All
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5.11. ROAD SCENE 115 tures. Hence a
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Chapter 6 Miscellaneous This chapte
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6.5. RESTRICTIONS 119 Figure 6.1: E
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2 APPENDIX A. CONTROL ÌÙÔÐ½
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4 APPENDIX A. CONTROL Attention For
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6 APPENDIX A. CONTROL Result retur
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8 APPENDIX A. CONTROL ÚÙÔØÛÒ
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10 APPENDIX A. CONTROL HDevelop / 2
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12 APPENDIX B. DEVELOP Attention If
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14 APPENDIX B. DEVELOP Ú ÓÔÒ Û
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16 APPENDIX B. DEVELOP Ú Ò×ÔØ
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18 APPENDIX B. DEVELOP Parallelizat
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20 APPENDIX B. DEVELOP º ÀØ (inp
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22 APPENDIX B. DEVELOP ’black’
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24 APPENDIX B. DEVELOP Parameter º
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26 APPENDIX B. DEVELOP Parameter º
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28 APPENDIX B. DEVELOP If ÊÓÛ½
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30 APPENDIX B. DEVELOP Ú ×Ø ÛÒ
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32 APPENDIX B. DEVELOP Possible Suc
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34 APPENDIX B. DEVELOP See Also Ú
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36 APPENDIX B. DEVELOP HDevelop / 2
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38 APPENDIX C. GLOSSARY Operator wi
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40 Index Ú ×Ø ÔÖØ, 27, 39 Ú
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42 Index Operator Data base, 37 Nam
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44 Index HDevelop / 2000-11-16
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