{"title":"高速摄像机中用于精确时间测量的帧率跟踪","authors":"P. B. Costa, L. C. Dias, I. L. R. Amorim","doi":"10.1007/s11340-025-01172-3","DOIUrl":null,"url":null,"abstract":"<div><h3>Background</h3><p>The development of high-speed camera technologies allows phenomena that occur at high speeds to be visualized and analyzed with precision. To ensure the quality of the results and provide metrological traceability, it is important that the camera is calibrated in the time parameter. This work proposes a traceable calibration methodology for high-speed cameras.</p><h3>Methods</h3><p>The calibration was conducted using an indirect method in which a laser emits controlled pulses in a 2500 Hz square wave. These pulses are monitored by an oscilloscope while simultaneously being captured by a camera. By comparing the pulses recorded by the oscilloscope with those captured by the camera, the calibration results are determined, and an uncertainty analysis is developed.</p><h3>Results</h3><p>With the proposed method, the calibration range was from 5400 fps to 400.000 fps, with an uncertainty of 0.02% at maximum frame rate and the main source of uncertainty comes from the calibration of the oscilloscope.</p><h3>Conclusion</h3><p>A detailed uncertainty assessment shows traceability and the quality of the results and the presented calibration method allows for the calibration of cameras up to 400,000 fps, making it suitable for a wide range of dynamic testing applications.</p></div>","PeriodicalId":552,"journal":{"name":"Experimental Mechanics","volume":"65 6","pages":"991 - 995"},"PeriodicalIF":2.4000,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Frame Rate Traceability in High-Speed Cameras for Accurate Time Measurement\",\"authors\":\"P. B. Costa, L. C. Dias, I. L. R. Amorim\",\"doi\":\"10.1007/s11340-025-01172-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Background</h3><p>The development of high-speed camera technologies allows phenomena that occur at high speeds to be visualized and analyzed with precision. To ensure the quality of the results and provide metrological traceability, it is important that the camera is calibrated in the time parameter. This work proposes a traceable calibration methodology for high-speed cameras.</p><h3>Methods</h3><p>The calibration was conducted using an indirect method in which a laser emits controlled pulses in a 2500 Hz square wave. These pulses are monitored by an oscilloscope while simultaneously being captured by a camera. By comparing the pulses recorded by the oscilloscope with those captured by the camera, the calibration results are determined, and an uncertainty analysis is developed.</p><h3>Results</h3><p>With the proposed method, the calibration range was from 5400 fps to 400.000 fps, with an uncertainty of 0.02% at maximum frame rate and the main source of uncertainty comes from the calibration of the oscilloscope.</p><h3>Conclusion</h3><p>A detailed uncertainty assessment shows traceability and the quality of the results and the presented calibration method allows for the calibration of cameras up to 400,000 fps, making it suitable for a wide range of dynamic testing applications.</p></div>\",\"PeriodicalId\":552,\"journal\":{\"name\":\"Experimental Mechanics\",\"volume\":\"65 6\",\"pages\":\"991 - 995\"},\"PeriodicalIF\":2.4000,\"publicationDate\":\"2025-03-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Experimental Mechanics\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11340-025-01172-3\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, CHARACTERIZATION & TESTING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Experimental Mechanics","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s11340-025-01172-3","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, CHARACTERIZATION & TESTING","Score":null,"Total":0}
Frame Rate Traceability in High-Speed Cameras for Accurate Time Measurement
Background
The development of high-speed camera technologies allows phenomena that occur at high speeds to be visualized and analyzed with precision. To ensure the quality of the results and provide metrological traceability, it is important that the camera is calibrated in the time parameter. This work proposes a traceable calibration methodology for high-speed cameras.
Methods
The calibration was conducted using an indirect method in which a laser emits controlled pulses in a 2500 Hz square wave. These pulses are monitored by an oscilloscope while simultaneously being captured by a camera. By comparing the pulses recorded by the oscilloscope with those captured by the camera, the calibration results are determined, and an uncertainty analysis is developed.
Results
With the proposed method, the calibration range was from 5400 fps to 400.000 fps, with an uncertainty of 0.02% at maximum frame rate and the main source of uncertainty comes from the calibration of the oscilloscope.
Conclusion
A detailed uncertainty assessment shows traceability and the quality of the results and the presented calibration method allows for the calibration of cameras up to 400,000 fps, making it suitable for a wide range of dynamic testing applications.
期刊介绍：
Experimental Mechanics is the official journal of the Society for Experimental Mechanics that publishes papers in all areas of experimentation including its theoretical and computational analysis. The journal covers research in design and implementation of novel or improved experiments to characterize materials, structures and systems. Articles extending the frontiers of experimental mechanics at large and small scales are particularly welcome.
Coverage extends from research in solid and fluids mechanics to fields at the intersection of disciplines including physics, chemistry and biology. Development of new devices and technologies for metrology applications in a wide range of industrial sectors (e.g., manufacturing, high-performance materials, aerospace, information technology, medicine, energy and environmental technologies) is also covered.
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