A study of the use of CMOS vision systems for continuous, real-time 2D frequency domain measurements using digital phase sensitive techniques

研究使用 CMOS 视觉系统使用数字相敏技术进行连续、实时 2D 频域测量

• 批准号: EP/F016212/1
• 负责人: Peter Lee
• 金额: $ 10.15万
• 依托单位: University of Kent
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2008
• 资助国家: 英国
• 起止时间: 2008 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FF016212%2F1
• 关键词: study; use; CMOS; vision; systems

This proposal aims to determine the feasibility and limitations of using CMOS imaging technology to perform frequency domain measurements on objects. CMOS cameras and imaging devices are commonly available and are used for capturing and displaying static and temporal images in a wide range of industrial and consumer applications. The same technolgy is also suitable for performing measurements on objects and materials in the frequency domain. Although the primary use of such devices are in machine vision and photography it is possible that they could be used as sensors in a range of industrial and medical imaging applications where frequency measurments can yield more information than data obtained in the temporal domain. Typical examples include time-of flight measurments, 3D contour measurements, laser profiling and flourescent tagging and assaying of biological materials. The latter example is used in many laboratories where testing of chemical species is being performed. This often requires the use of expensive cooled high-speed CCD cameras to capture the information in the time domain.It has been demonstrated by many scientists and engineers that it is often easier, more reliable and cheaper to extract such information in the frequency domain. The PI has been involved in recent EU research projects that have developed instruments using such techniques with a single optical sensor. This project aims to extend this work to a 2D array of sensors, enabling the technique to be used for imaging the object under test rather than providing a single-source measurement.The project will demonstrate that it is possible using existing imaging technology combined with the latest digital signal processing devices to build an instrument that can perform these 2D frequency measurments continuously and in real-time.It will also determine the limitations of the current devices and how the overall performance of the system could be improved to make it suitable for a wide range of measurement applications. This feasibility study will then be used as the basis for further research into improved architectures for continuous, real-time frequency based imaging systems.

这项建议旨在确定使用cmos成像技术对物体进行频域测量的可行性和局限性。在广泛的工业和消费应用中，通常可以获得并用于捕获和显示静态和时间图像的CMOS相机和成像设备。同样的技术也适用于在频域中对物体和材料进行测量。虽然这种设备的主要用途是机器视觉和摄影，但它们也可能被用作一系列工业和医学成像应用中的传感器，在这些应用中，频率测量可以产生比在时间域中获得的数据更多的信息。典型的例子包括飞行时间测量、三维轮廓测量、激光仿形和生物材料的荧光标记和分析。后一个例子在许多实验室中使用，这些实验室正在进行化学物种测试。这往往需要使用昂贵的冷却高速CCD摄像机来捕捉时间域中的信息，许多科学家和工程师已经证明，在频域中提取此类信息往往更容易、更可靠、成本更低。PI参与了最近的欧盟研究项目，这些项目开发了使用这种技术和单一光学传感器的仪器。该项目旨在将这项工作扩展到2D传感器阵列，使该技术能够用于对被测对象成像，而不是提供单一来源的测量。该项目将展示使用现有成像技术和最新的数字信号处理设备来构建能够连续和实时进行这些2D频率测量的仪器是可能的。还将确定当前设备的局限性以及如何改进系统的整体性能，使其适用于广泛的测量应用。这项可行性研究将被用作进一步研究连续、实时基于频率的成像系统的改进架构的基础。