HDevelop User's Manual

More documents

Recommendations

Info

92 CHAPTER 4. CODE GENERATION ¯ Displaying images In HDevelop, images are automatically scaled to fit the current window size. This is not the case in exported programs. If for example you load and display two images of different size, the second one will appear clipped if it is larger than the first image or filled up with black areas if it is smaller. For a correct display, you must use the operator Ú ×Ø ÔÖØ before displaying an image with Ú ×ÔÐÝ as follows: Ú×ØÔÖØ ´¼¸ ¼¸ ÁÑÀØ¹½¸ ÁÑÏØ¹½µ Ú×ÔÐÝ ´ÁÑµ In this example, ÁÑ is the image variable, ÁÑÀØ and ÁÑÏØ denote its size. You can query the size of an image with the operator Ø Ñ ÔÓÒØÖ½. Please consult the HALCON Reference Manuals for more details. Note, that the operator Ú ×Ø ÔÖØ (and its HALCON library equivalent ×Ø ÔÖØ) is more commonly used for displaying (and thereby zooming) parts of images. By calling it with the full size of an image as shown above, you assure that the image exactly fits the window. ¯ Changing display parameters If you change the way how results are displayed (color, line width, etc.) in HDevelop interactively via the menu Î×ÙÐÞØÓÒ, these changes will not be incorporated in the exported program. We recommend to insert the corresponding ÚÐÓÔ operators (e.g., Ú ×Ø ÓÐÓÖ or Ú ×Ø ÐÒ ÛØ) in the HDevelop program explicitely. This will result in the appropriate call (×Ø ÓÐÓÖ, ×Ø ÐÒ ÛØ, etc.) in the exported code. HDevelop / 2000-11-16
Chapter 5 Program Examples This chapter contains examples that illustrate how to program with HDevelop. To understand the examples you should have a basic knowledge of image analysis. The user interface is described in chapters 1.2 and 2. Language details are explained in chapter 3. The examples of this chapter are also available as program code in the directory ±ÀÄÇÆÊÇÇÌ±ÜÑÔÐ×ÚÐÓÔÅÒÙÐ×ÀÚÐÓÔ To experiment with these examples we recommend to create a private copy in your working directory. More detailed information on HALCON operators is available in the reference manuals. 5.1 Stamp Segmentation File name: ×ØÑÔ×ºÚ The first example performs a document analysis task.Figure 5.1 shows a part of a stamp catalog page. It contains two types of information about stamps: a graphical presentation and a textual description of the stamp. In this example you have to transform the textual information into a representation that can be processed by a computer with little effort. You might use an OCR program for this task, but you will soon recognize that most of the available products create many errors due to the graphical presentation of the stamps. Thus another task has to be preprocessed: the elimination of all stamps (i.e., changing stamps to the gray value of the paper). After this preprocessing it is possible to process the remaining text using an OCR program. When creating an application to solve this kind of problem, it is helpful to describe characteristic attributes of the objects to be searched (here: stamps). This task can be solved by a novice with some experience, too. In this case, a characterization might look as follows: ¯ Stamps are darker than paper. ¯ Stamps are connected image areas that do not overlap. ¯ Stamps have a minimum and maximum size. 93
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 and 10:
Chapter 1 Introducing HDevelop In f
Page 11 and 12:
1.2. EXAMPLE SESSION 3 Figure 1.1:
Page 13 and 14:
1.2. EXAMPLE SESSION 5 Figure 1.2:
Page 15 and 16:
1.3. ADDITIONAL SOURCES OF INFORMAT
Page 17 and 18:
Chapter 2 Graphical User Interface
Page 19 and 20:
2.3. MAIN WINDOW 11 Figure 2.1: The
Page 21 and 22:
2.3. MAIN WINDOW 13 A security chec
Page 23 and 24:
2.3. MAIN WINDOW 15 a directory whe
Page 25 and 26:
2.3. MAIN WINDOW 17 Figure 2.7: The
Page 27 and 28:
2.3. MAIN WINDOW 19 and not HDevelo
Page 29 and 30:
2.3. MAIN WINDOW 21 Figure 2.10: Ma
Page 31 and 32:
2.3. MAIN WINDOW 23 2.3.2.4 The Men
Page 33 and 34:
2.3. MAIN WINDOW 25 Figure 2.13: On
Page 35 and 36:
2.3. MAIN WINDOW 27 in a graphics w
Page 37 and 38:
2.3. MAIN WINDOW 29 Figure 2.16: On
Page 39 and 40:
2.3. MAIN WINDOW 31 Figure 2.17: Co
Page 41 and 42:
2.3. MAIN WINDOW 33 Figure 2.18: Se
Page 43 and 44:
2.3. MAIN WINDOW 35 Figure 2.20: Se
Page 45 and 46:
2.3. MAIN WINDOW 37 Figure 2.23: Ex
Page 47 and 48:
2.3. MAIN WINDOW 39 output paramete
Page 49 and 50: 2.3. MAIN WINDOW 41 is registered i
Page 51 and 52: 2.3. MAIN WINDOW 43 ËÙ×ØÓÒ×
Page 53 and 54: 2.3. MAIN WINDOW 45 ÏÒÓÛ º ×
Page 55 and 56: 2.3. MAIN WINDOW 47 Figure 2.31: Th
Page 57 and 58: 2.5. OPERATOR WINDOW 49 The program
Page 59 and 60: 2.5. OPERATOR WINDOW 51 Please refe
Page 61 and 62: 2.6. VARIABLE WINDOW 53 operator ha
Page 63 and 64: 2.6. VARIABLE WINDOW 55 aspect rati
Page 65 and 66: 2.7. GRAPHICS WINDOW 57 Figure 2.38
Page 67 and 68: Chapter 3 Language The following ch
Page 69 and 70: 3.2. CONTROL TYPES AND CONSTANTS 61
Page 71 and 72: 3.4. OPERATIONS ON ICONIC OBJECTS 6
Page 73 and 74: 3.5. EXPRESSIONS FOR INPUT CONTROL
Page 85 and 86: 3.6. RESERVED WORDS 77 ÓÖ, ÜÓÖ
Page 87 and 88: 3.8. LIMITATIONS 79 In the followin
Page 89 and 90: Chapter 4 Code Generation The idea
Page 91 and 92: 4.1. CODE GENERATION FOR C++ 83 Ì
Page 93 and 94: 4.1. CODE GENERATION FOR C++ 85 tha
Page 95 and 96: 4.2. CODE GENERATION FOR VISUAL BAS
Page 97 and 98: 4.3. CODE GENERATION FOR C 89 4.3 C
Page 99: 4.4. GENERAL ASPECTS OF CODE GENERA
Page 103 and 104: 5.2. CAPILLARY VESSEL 95 ÚÐÓ×Û
Page 105 and 106: 5.2. CAPILLARY VESSEL 97 Figure 5.3
Page 107 and 108: 5.3. PARTICLES 99 each. Now it is e
Page 109 and 110: 5.4. ANNUAL RINGS 101 ÚÐÖÛÒÓ
Page 111 and 112: 5.5. BONDING 103 Figure 5.9: Exampl
Page 113 and 114: 5.7. DEVICES 105 Figure 5.11: Calib
Page 115 and 116: 5.7. DEVICES 107 Figure 5.13: Resis
Page 117 and 118: 5.8. CELL WALLS 109 Figure 5.15: Mi
Page 119 and 120: 5.10. EXCEPTION HANDLING 111 Figure
Page 121 and 122: 5.11. ROAD SCENE 113 any case. All
Page 123 and 124: 5.11. ROAD SCENE 115 tures. Hence a
Page 125 and 126: Chapter 6 Miscellaneous This chapte
Page 127 and 128: 6.5. RESTRICTIONS 119 Figure 6.1: E
Page 129 and 130: 2 APPENDIX A. CONTROL ÌÙÔÐ½
Page 131 and 132: 4 APPENDIX A. CONTROL Attention For
Page 133 and 134: 6 APPENDIX A. CONTROL Result retur
Page 135 and 136: 8 APPENDIX A. CONTROL ÚÙÔØÛÒ
Page 137 and 138: 10 APPENDIX A. CONTROL HDevelop / 2
Page 139 and 140: 12 APPENDIX B. DEVELOP Attention If
Page 141 and 142: 14 APPENDIX B. DEVELOP Ú ÓÔÒ Û
Page 143 and 144: 16 APPENDIX B. DEVELOP Ú Ò×ÔØ
Page 145 and 146: 18 APPENDIX B. DEVELOP Parallelizat
Page 147 and 148: 20 APPENDIX B. DEVELOP º ÀØ (inp
Page 149 and 150: 22 APPENDIX B. DEVELOP ’black’
Page 151 and 152:
24 APPENDIX B. DEVELOP Parameter º
Page 153 and 154:
26 APPENDIX B. DEVELOP Parameter º
Page 155 and 156:
28 APPENDIX B. DEVELOP If ÊÓÛ½
Page 157 and 158:
30 APPENDIX B. DEVELOP Ú ×Ø ÛÒ
Page 159 and 160:
32 APPENDIX B. DEVELOP Possible Suc
Page 161 and 162:
34 APPENDIX B. DEVELOP See Also Ú
Page 163 and 164:
36 APPENDIX B. DEVELOP HDevelop / 2
Page 165 and 166:
38 APPENDIX C. GLOSSARY Operator wi
Page 167 and 168:
40 Index Ú ×Ø ÔÖØ, 27, 39 Ú
Page 169 and 170:
42 Index Operator Data base, 37 Nam
Page 171:
44 Index HDevelop / 2000-11-16
show all

HDevelop User's Manual

Create successful ePaper yourself

Delete template?

Save as template?