HALCON Extension Package Programmer's Manual

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58 CHAPTER 4. HALCON DATA TYPESHALCON Extension Package Interface / 2000-11-16
Chapter 5Handling Iconic Objects and ControlParametersThe HALCON Extension Package Interface provides a large set of procedures and macros forhandling control parameters and iconic objects. It supports tasks like:¯ Accessing iconic input objects in the HALCON data base.¯ Accessing single iconic objects within a tuple of objects.¯ Accessing specific components (regions, gray value channels) of image objects.¯ Accessing XLDs.¯ Creating iconic output objects in the HALCON data base based on the computed results.¯ Reading input control parameters.¯ Writing output control parameters.The routines of the Extension Package Interface described in this and the following chapterespecially facilitate the programming of support procedures (that is the access of the HALCONdata base and all the parameter handling).In this chapter the “low level” interface routines are introduced. They allow a straightforwardaccess to all parameters of an operator – to iconic objects (and their components) and to controlparameters. Moreover, some routines for creating objects and writing output object parametersand control parameters are introduced.Based on these low level routines a set of convenience routines are presented in chapter 6. Theyare designed to further facilitate the programming of very typical support procedures.5.1 Basic Access to Iconic Input ObjectsThis section introduces some basic routines for accessing iconic objects (regions, gray valuechannels, XLDs), see Fig. 5.1. They form a basic interface to the HALCON data base. Fig. 5.2illustrates how they are used to read image and region data from input object parameters.59
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Chapter 1IntroductionHALCON can be
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1.1. HALCON OPERATORS 3objects (or
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Page 25 and 26: 2.2. EXTENDED OPERATOR DESCRIPTION
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Page 45 and 46: Chapter 3Style Guide for Programmin
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Page 57 and 58: Chapter 4HALCON Data TypesThe HALCO
Page 59 and 60: 4.2. REGION DATA (’HRLREGION’)
Page 61 and 62: 4.3. XLDS (’HCONT’, ’HPOLY’
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108 CHAPTER 7. CREATING A NEW HALCO
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114 APPENDIX A. HALCON ERROR CODES
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132 APPENDIX A. HALCON ERROR CODESH
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