A Low-Cost Color-Television Film-Recording System

SMPTE Journal ◽  
1979 ◽  
Vol 88 (3) ◽  
pp. 157-160
Author(s):  
Kenneth G. Lisk
Keyword(s):  
Low Cost ◽  
Recording System ◽  
Television Film ◽  
Color Television

scholarly journals Reliable Data Acquisition System for a Low-Cost Accelerograph Applied to Structural Health Monitoring

2020 ◽  
Vol 3 (2) ◽  
pp. 181-194
Author(s):  
Milton Muñoz ◽  
Remigio Guevara ◽  
Santiago González ◽  
Juan Carlos Jiménez
Keyword(s):  
Structural Health Monitoring ◽  
Data Acquisition ◽  
Health Monitoring ◽  
Seismic Event ◽  
Low Cost ◽  
Recording System ◽  
Continuous Recording ◽  
Remote Communication ◽  
Structural Health ◽  
Hydroelectric Dam

This paper presents and evaluates a continuous recording system designed for a low-cost seismic station. The architecture has three main blocks. An accelerometer sensor based on MEMS technology (Microelectromechanical Systems), an SBC platform (Single Board Computer) with embedded Linux and a microcontroller device. In particular, the microcontroller represents the central component which operates as an intermediate agent to manage the communication between the accelerometer and the SBC block. This strategy allows the system for data acquisition in real time. On the other hand, the SBC platform is used for storing and processing data as well as in order to configure the remote communication with the station. This proposal is intended as a robust solution for structural health monitoring (i.e. in order to characterize the response of an infrastructure before, during and after a seismic event). The paper details the communication scheme between the system components, which has been minutely designed to ensure the samples are collected without information loss. Furthermore, for the experimental evaluation the station was located in the facilities on a relevant infrastructure, specifically a hydroelectric dam. The system operation was compared and verified with respect to a certified accelerograph station. Results prove that the continuous recording system operates successfully and allows for detecting seismic events according to requirements of structural health applications (i.e. detects events with a frequency of vibration less than 100 Hz). Specifically, through the system implemented it was possible to characterize the effect of a seismic event of 4 MD reported by the regional seismology network and with epicenter located about 30 Km of the hydroelectric dam. Particularly, the vibration frequencies detected on the infrastructure are in the range of 13 Hz and 29 Hz. Regarding the station performance, results from experiments reveals an average CPU load of 51%, consequently the processes configured on the SBC platform do not involve an overload. Finally, the average energy consumption of the station is close to 2.4 W, therefore autonomy provided by the backup system is aroud of 10 hours.

scholarly journals Cultural Heritage Recording Utilising Low-Cost Closerange Photogrammetry

2011 ◽  
Vol 6 ◽  
pp. 185-192
Author(s):  
Melanie Kirchhöfer ◽  
Jim Chandler ◽  
Rene Wackrow
Keyword(s):  
Cultural Heritage ◽  
Low Cost ◽  
Cost Effective ◽  
Recording System ◽  
Exterior Orientation ◽  
Close Range Photogrammetry ◽  
Lay People ◽  
Close Range ◽  
English Heritage ◽  
Heritage Recording

Cultural heritage is under a constant threat of damage or even destruction and comprehensive and accurate recording is necessary to attenuate the risk of losing heritage or serve as basis for reconstruction. Cost effective and easy to use methods are required to record cultural heritage, particularly during a world recession, and close-range photogrammetry has proven potential in this area. Off-the-shelf digital cameras can be used to rapidly acquire data at low cost, allowing non-experts to become involved. Exterior orientation of the camera during exposure ideally needs to be established for every image, traditionally requiring known coordinated target points. Establishing these points is time consuming and costly and using targets can be often undesirable on sensitive sites. MEMS-based sensors can assist in overcoming this problem by providing small-size and low-cost means to directly determine exterior orientation for close-range photogrammetry. This paper describes development of an image-based recording system, comprising an off-the-shelf digital SLR camera, a MEMS-based 3D orientation sensor and a GPS antenna. All system components were assembled in a compact and rigid frame that allows calibration of rotational and positional offsets between the components. The project involves collaboration between English Heritage and Loughborough University and the intention is to assess the system’s achievable accuracy and practicability in a heritage recording environment. Tests were conducted at Loughborough University and a case study at St. Catherine’s Oratory on the Isle of Wight, UK. These demonstrate that the data recorded by the system can indeed meet the accuracy requirements for heritage recording at medium accuracy (1-4cm), with either a single or even no control points. As the recording system has been configured with a focus on low-cost and easy-to-use components, it is believed to be suitable for heritage recording by non-specialists. This offers the opportunity for lay people to become more involved in their local heritage, an important aspiration identified by English Heritage. Recently, mobile phones (smartphones) with integrated camera and MEMS-based orientation and positioning sensors have become available. When orientation and position during camera exposure is extracted, these phones establish off-the-shelf systems that can facilitate image-based recording with direct exterior orientation determination. Due to their small size and low-cost they have potential to further enhance the involvement of lay-people in heritage recording. The accuracy currently achievable will be presented also.

A Transistorized Color Television Film Camera

1965 ◽  
Vol 74 (10) ◽  
pp. 930-935 ◽  
Author(s):  
David M. Taylor
Keyword(s):  
Television Film ◽  
Color Television

Color Television Film Recording from a Trinoscope

1974 ◽  
Vol 83 (9) ◽  
pp. 719-721 ◽  
Author(s):  
K. G. Lisk ◽  
C. H. Evans
Keyword(s):  
Television Film ◽  
Color Television

scholarly journals A Digital Video System for Observing and Recording Occultations

2015 ◽  
Vol 32 ◽  
Author(s):  
M. A. (Tony) Barry ◽  
Dave Gault ◽  
Hristo Pavlov ◽  
William Hanna ◽  
Alistair McEwan ◽  
...  
Keyword(s):  
Solar System ◽  
Dead Time ◽  
Low Cost ◽  
Low Noise ◽  
Recording System ◽  
Outer Solar System ◽  
Main Belt ◽  
Recording Equipment ◽  
The Past ◽  
Solar System Bodies

AbstractStellar occultations by asteroids and outer solar system bodies can offer ground based observers with modest telescopes and camera equipment the opportunity to probe the shape, size, atmosphere, and attendant moons or rings of these distant objects. The essential requirements of the camera and recording equipment are: good quantum efficiency and low noise; minimal dead time between images; good horological faithfulness of the image timestamps; robustness of the recording to unexpected failure; and low cost. We describe an occultation observing and recording system which attempts to fulfil these requirements and compare the system with other reported camera and recorder systems. Five systems have been built, deployed, and tested over the past three years, and we report on three representative occultation observations: one being a 9 ± 1.5 s occultation of the trans-Neptunian object 28978 Ixion (mv =15.2) at 3 seconds per frame; one being a 1.51 ± 0.017 s occultation of Deimos, the 12 km diameter satellite of Mars, at 30 frames per second; and one being a 11.04 ± 0.4 s occultation, recorded at 7.5 frames per second, of the main belt asteroid 361 Havnia, representing a low magnitude drop (Δmv = ~0.4) occultation.

scholarly journals Inexpensive, scalable camera system for tracking rats in large spaces

2018 ◽  
Author(s):  
Rajat Saxena ◽  
Warsha Barde ◽  
Sachin S. Deshmukh
Keyword(s):  
Tracking System ◽  
Low Cost ◽  
Video Tracking ◽  
Recording System ◽  
Raspberry Pi ◽  
Camera Tracking ◽  
Camera System ◽  
Wireless Recording ◽  
Firing Characteristics ◽  
Improved Accuracy

AbstractMost studies focused on understanding the neural circuits underlying spatial navigation are restricted to small behavioral arenas (≤ 1 m2) because of the limits imposed by the cables extending from the animal to the recording system. New wireless recording systems have significantly increased the recording range. However, the size of arena is still constrained by the lack of a video tracking system capable of monitoring the animal’s movements over large areas integrated with these recording systems. We developed and benchmarked a novel, open-source, scalable multi-camera tracking system based on commercially available and low-cost hardware (Raspberry Pi computers and Raspberry Pi cameras). This Picamera system was used in combination with a wireless recording system for characterizing neural correlates of space in environments of various sizes up to 16.5 m2. Spatial rate maps generated using the Picamera system showed improved accuracy in estimating spatial firing characteristics of neurons compared to a popular commercial system, due to its better temporal accuracy. The system also showed improved accuracy in estimating head direction cell tuning as well as theta phase precession in place cells. This improved temporal accuracy is crucial for accurately aligning videos from multiple cameras in large spaces and characterizing spatially modulated cells in a large environment.

scholarly journals Development of a Low-cost, Comprehensive Recording System for Circadian Rhythm Behavior

2018 ◽  
Vol 27 (1) ◽  
pp. 65-75
Author(s):  
Jea Kwon ◽  
Min Gu Park ◽  
Seung Eun Lee ◽  
C. Justin Lee
Keyword(s):  
Circadian Rhythm ◽  
Low Cost ◽  
Recording System

Laser-Beam Recorder for Color Television Film Transfer

1971 ◽  
Vol 80 (9) ◽  
pp. 699-703 ◽  
Author(s):  
Leo Beiser ◽  
Wendell Lavender ◽  
Renville H. McMann ◽  
Robert Walker
Keyword(s):  
Laser Beam ◽  
Television Film ◽  
Color Television ◽  
Film Transfer
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