- Tytuł:
- Virtual MRTD – an indirect method to measure MRTD of thermal imagers using computer simulation
- Autorzy:
-
Chrzanowski, Krzysztof
Hong Viet, Nguyen - Powiązania:
- https://bibliotekanauki.pl/articles/1835813.pdf
- Data publikacji:
- 2020
- Wydawca:
- Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
- Tematy:
-
MRTD
minimum resolvable temperature difference
virtual MRTD
indirect method
computer simulation
thermal imager - Opis:
- Minimum resolvable temperature difference (MRTD) is considered as the most important parameter of thermal imagers. A new method of MRTD measurement without drawbacks of other methods is presented in this paper. Proposed MRTD measurement method coded as virtual MRTD is based on a three steps measurement concept using semi-automatic objective measurements and computer simulation. First, objective parameters of the tested thermal imager are measured. Second, software simulates this tested thermal imager and generates the image of 4-bar target of specified spatial frequency (size) and contrast (temperature difference). Third, a human observer analyses the images of the 4-bar target generated by the software on the screen of PC set and measures MRTD of the simulated thermal imager at specified set of spatial frequencies. The proposed method offers higher measurement speed, lower cost and typically better accuracy in comparison with the typical MRTD measurement method.
- Źródło:
-
Optica Applicata; 2020, 50, 4; 671-688
0078-5466
1899-7015 - Pojawia się w:
- Optica Applicata
- Dostawca treści:
- Biblioteka Nauki