SAT (semi-automatic test) module is a PC with installed frame grabber card and specialized software optimized for testing surveillance imaging systems or modules of such systems. Generally SAT module enables capture and analysis of images generated by tested electro-optical imaging systems like thermal imagers, TV cameras or video cameras used in the test system.. The PC is the heart of the SAT module and is connected both to the test system and to the tested imager.
Standard PCs (desktop PC or laptop) are used as part of SAT module. Standard frame grabber card enables acquisition of electronic image in the following formats: analog video (PAL, NTSC) or digital (Fire Wire, USB 2.0). Optional frame grabber can capture electronic images in the following digital formats: LVDS, CameraLink or GigE.
Specialized software is offered in different versions depending on type of test system. Typically the software package is built from TAS series program for image analysis and some additional programs for control of blackbody/light source. TAS is an advanced computer program optimized for analysis of images generated by surveillance imaging systems and calculation of parameters of these systems.
SAT block diagram
Image of edge target
MTF measurement results of two imagers
|processor||typical modern processor for current desktop/laptop PC|
|type||desktop PC for DT, SAFT, VT, ITS, FT systems or laptop for LAFT systems|
|operating system||Windows XP or Windows 7|
|Dynamic||8 bit (option: 10 bit)|
|Standard video signal formats||PAL, NTSC, Fire Wire, USB 2.0|
|Optional video signal formats||CameraLink, LVDS, GigE|
|Measurement tools for testing thermal cameras (TAS-T software)||Semi-automatic measurement of MTF, SiTF, NETD, FPN, non-uniformity, distortion, SRF, FOV; and support for MRTD measurement|
|Measurement tools for testing TV cameras (TAS-V software)||Semi-automatic measurement of MTF, Sensitivity, SNR, Input-output characteristic, Light Control range, Automatic Light Control range, Black level non uniformity, White level non uniformity, Distortion, FOV; and support for MRC measurement|
|Measurement tools for testing II tubes cameras (TAS-I software)||Semi-automatic measurement of MTF, dark spots and bright spots, SNR, halo, gross distortion, shear distortion, useful tube diameter, output brightness non-uniformity, image alignment; image rotation, magnification, Multi-Multi Noise, Multi-Boundary Noise, and software support for resolution measurement.|
|Measurement tools for testing IR FPAs (TAS-F software)||Semi-automatic measurement of MTF, SiTF, NETD, FPN, non-uniformity, cross-talk, bad pixels.|
|TCB Control||PC control of TCB blackbody/ MRW rotary wheel control during testing thermal imagers|
|DAL Control||PC control of DAL light source/rotary wheel during testing of TV cameras.|
|ITS Display||Control of ITS stations during testing II tubes|
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