AN INFRARED STROBE CCD TELEVISION CAMERA UNIT

红外频闪CCD电视摄像机装置

• 批准号: 3896235
• 负责人: H E CASCIO
• 金额: --
• 依托单位: NATIONAL CENTER FOR RESEARCH RESOURCES
• 依托单位国家: 美国
• 资助国家: 美国
• 起止时间: 至
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/3896235
• 关键词: biomedical equipment development; biomedical equipment resource; chordate locomotion; image processing; infrared radiation; television; video recording system

The Biomechanics Laboratory makes available to clinicians and researchers at the NIH quantitative information concerning human motion. The Laboratory has a computer-operated television motion analysis system (VICON) to acquire and evaluate data. The system detects the presence of reflective markers located on the patient and calculates the three dimensional location of each marker. The problems with persistence, blooming, and electronic stability of the vidicon cameras makes the balancing and calibration of the six cameras difficult. Also, problems with video overload are encountered when a strobed infrared (IR) Light Emitting Diode (LED) array is viewed by another camera. The solution is to replace the vidicon cameras with CCD cameras, which have superior electronic stability and do not display-picture smearing when detecting fast motion. Each camera has a strobed IR array to illuminate the field of view. To eliminate the illumination cross-talk between cameras, each IR array is equipped with IR emitters with wavelengths of either 880nm or 950nm. An IR band-pass filter that matches the wavelength of the array is placed over the camera lens.

生物力学实验室向临床医生和研究人员提供 通过有关人类运动的NIH定量信息。这 实验室具有计算机操作的电视运动分析系统 （Vicon）获取和评估数据。该系统检测到存在 位于患者上的反射标记并计算三个 每个标记的维度位置。持久性问题， 开花和电子摄像机的电子稳定性使得 六个相机的平衡和校准困难。另外，问题 当带有红外线（IR）光线时，会遇到视频超负荷 发射二极管（LED）阵列由另一台相机查看。 解决方案是用CCD摄像机替换Vidicon摄像机 具有卓越的电子稳定性，不显示图片涂抹 检测快速运动时。每个摄像机都有一个IR阵列 照亮视野。消除照明串扰 在相机之间，每个IR阵列都配备了IR发射器 880nm或950nm的波长。与匹配的IR带通滤波器 阵列的波长放在相机镜头上。