Calculation of discrete correlation functionin facet systems of techical vision
The paper proposes a facet vision system composed from identical facet elements. Each facet element contains an optical system, several photodetectors, a preamplifier, and a universal microcontroller. In such a system, all facet elements operate independently of each other. Each facet element perfor...
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| Format: | Article |
| Language: | English |
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Politehperiodika
2022-06-01
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| Series: | Tekhnologiya i Konstruirovanie v Elektronnoi Apparature |
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| Online Access: | https://tkea.com.ua/index.php/journal/article/view/58 |
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| _version_ | 1849738717947756544 |
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| author | Volodymyr Borovytsky Vadym Antonenko |
| author_facet | Volodymyr Borovytsky Vadym Antonenko |
| author_sort | Volodymyr Borovytsky |
| collection | DOAJ |
| description | The paper proposes a facet vision system composed from identical facet elements. Each facet element contains an optical system, several photodetectors, a preamplifier, and a universal microcontroller. In such a system, all facet elements operate independently of each other. Each facet element performs fast measurements of the angular velocity of objects in its field of view by calculating the discrete correlation functions of the signals from the photodetectors. The paper considers the possibility of using economical microcontrollers in facet elements for fast calculation of the discrete correlation functions. The authors perform a comparative analysis of the techniques based on the direct calculation and the calculation with fast Fourier transform. The investigation of the corresponding program code for microcontrollers in assembly language is done with calculations of the number of machine instructions and their execution time. The study confirms that economical universal microcontrollers are able to perform fast measurements by finding the maximum values of discrete correlation functions. In the case of receiving signals from 4 photodetectors, the calculation time is less than 10 milliseconds for input data arrays of 384 elements and less than 1.2 milliseconds for input data arrays of 128 elements. These results make the proposed facet vision systems applicable in navigation, orientation, and collision avoidance with moving and stationary objects in automatic vehicles, including unmanned aerial vehicles. |
| format | Article |
| id | doaj-art-ef0e97e31215469dbda04b8da694d5ce |
| institution | DOAJ |
| issn | 2225-5818 2309-9992 |
| language | English |
| publishDate | 2022-06-01 |
| publisher | Politehperiodika |
| record_format | Article |
| series | Tekhnologiya i Konstruirovanie v Elektronnoi Apparature |
| spelling | doaj-art-ef0e97e31215469dbda04b8da694d5ce2025-08-20T03:06:28ZengPolitehperiodikaTekhnologiya i Konstruirovanie v Elektronnoi Apparature2225-58182309-99922022-06-011–382110.15222/TKEA2022.1-3.0858Calculation of discrete correlation functionin facet systems of techical visionVolodymyr Borovytsky0Vadym Antonenko1Igor Sikorsky Kyiv Polytechnic InstituteIgor Sikorsky Kyiv Polytechnic InstituteThe paper proposes a facet vision system composed from identical facet elements. Each facet element contains an optical system, several photodetectors, a preamplifier, and a universal microcontroller. In such a system, all facet elements operate independently of each other. Each facet element performs fast measurements of the angular velocity of objects in its field of view by calculating the discrete correlation functions of the signals from the photodetectors. The paper considers the possibility of using economical microcontrollers in facet elements for fast calculation of the discrete correlation functions. The authors perform a comparative analysis of the techniques based on the direct calculation and the calculation with fast Fourier transform. The investigation of the corresponding program code for microcontrollers in assembly language is done with calculations of the number of machine instructions and their execution time. The study confirms that economical universal microcontrollers are able to perform fast measurements by finding the maximum values of discrete correlation functions. In the case of receiving signals from 4 photodetectors, the calculation time is less than 10 milliseconds for input data arrays of 384 elements and less than 1.2 milliseconds for input data arrays of 128 elements. These results make the proposed facet vision systems applicable in navigation, orientation, and collision avoidance with moving and stationary objects in automatic vehicles, including unmanned aerial vehicles.https://tkea.com.ua/index.php/journal/article/view/58vision systemsdigital signal processingangular velocity measurementdiscrete correlation functiondigital camerasunmanned aerial vehicles |
| spellingShingle | Volodymyr Borovytsky Vadym Antonenko Calculation of discrete correlation functionin facet systems of techical vision Tekhnologiya i Konstruirovanie v Elektronnoi Apparature vision systems digital signal processing angular velocity measurement discrete correlation function digital cameras unmanned aerial vehicles |
| title | Calculation of discrete correlation functionin facet systems of techical vision |
| title_full | Calculation of discrete correlation functionin facet systems of techical vision |
| title_fullStr | Calculation of discrete correlation functionin facet systems of techical vision |
| title_full_unstemmed | Calculation of discrete correlation functionin facet systems of techical vision |
| title_short | Calculation of discrete correlation functionin facet systems of techical vision |
| title_sort | calculation of discrete correlation functionin facet systems of techical vision |
| topic | vision systems digital signal processing angular velocity measurement discrete correlation function digital cameras unmanned aerial vehicles |
| url | https://tkea.com.ua/index.php/journal/article/view/58 |
| work_keys_str_mv | AT volodymyrborovytsky calculationofdiscretecorrelationfunctioninfacetsystemsoftechicalvision AT vadymantonenko calculationofdiscretecorrelationfunctioninfacetsystemsoftechicalvision |