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STH-MD1 U

SER

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S

M

ANUAL

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2001 V

IDERE

D

ESIGN

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STH-MD1/-C Stereo Head

User’s Manual

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2001 Videre Design

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Summary of Contents for STH-MD1

Page 1: ...STH MD1 USER S MANUAL 2001 VIDERE DESIGN 1 STH MD1 C Stereo Head User s Manual 2001 Videre Design...

Page 2: ...tization Parameters 12 6 4 Subsampling 12 6 5 Subwindowing 13 6 6 Electronic Pan and Tilt 13 6 7 Electronic Vergence 13 6 8 Frame Rates 14 7 Installing the 1394 Host Card and Capture Software 15 7 1 1...

Page 3: ...4 interface the user can set exposure gain subwindow decimation etc They can be used interchangeably with the same interface module The STH MD1 C uses standard C mount lenses for user changeable optic...

Page 4: ...signal power 1394 plug Most PCMCIA cards come with this adapter Start the video capture program smallv exe or smallvcap exe on the host computer You should see a screen as in Figure 2 1 The message w...

Page 5: ...STH MD1 USER S MANUAL 2001 VIDERE DESIGN 5 that software It is helpful to review Section 6 in conjunction with the SVS documentation...

Page 6: ...STH MD1 C In the stereo imager module two CMOS imagers each of size 1288 x 1032 pixels digitize incoming light into a digital stream The imagers operate in progressive mode only that is each line is...

Page 7: ...mager Interlace Electronics Imager module 1394 Interface Electronics 1394 module 8 bit pixels 12 MHz per imager Interlaced pixels 24 MHz 1394 Digital Cable 1394 imaging commands Digital Video Stream 1...

Page 8: ...ning solvent and wipe the imager glass surface gently Dry with a similar tissue 4 3 Imager Size The imager size is the largest size of imager that can be covered by the lens For the STH MD1 the lens m...

Page 9: ...interpolation factor of 16 Figure 4 1 plots this relationship for several focal lengths At any distance the range resolution is inversely proportional to the focal length 4 7 Field of View The field...

Page 10: ...gy doesn t have any loops The STH MD1 C can be connected at any point in such a topology At a maximum it will need about 60 of the bandwidth of a 400 MBps connection 5 2 1394 Host Interface The host c...

Page 11: ...colorized camera samples monochrome information In general a color camera has about the spatial resolution of a similar monochrome camera To compensate for the reduced resolution use binning Section...

Page 12: ...t the manual iris of the lens to as small an opening as possible for your application without having to use gain This will increase the depth of field and give better optical performance 6 4 Subsampli...

Page 13: ...image With a fixed subwindow size you can think of subsampling as electronic zoom 6 6 Electronic Pan and Tilt Since a subwindow doesn t occupy the whole image it can be placed at different positions...

Page 14: ...always use the same time to output a line no matter how many pixels it contains Table 6 1 shows the frame rates for maximum frame sizes in each of the decimation modes To calculate an actual frame rat...

Page 15: ...llation Linux kernels 2 4 x are required for operation Please see the Videre Design website www videredesign com support_svslnx htm for current information Sometimes the 1394 system will get hung and...

Page 16: ...perform calibration on your stereo system stcap exe is a simple application that connects to the stereo head and displays images It can serve as a template for user programs that integrate stereo cap...

Page 17: ...STH MD1 USER S MANUAL 2001 VIDERE DESIGN 17 8 Interface Software API Please see the Small Vision System manual for information about the software API for capturing and saving images...

Page 18: ...the STH MD1 C The larger hole is threaded for a 20 machine screw standard tripod mounting screw The two smaller holes are threaded for 6 32 machine screws 9 2 Bottom Mounting Diagram for the STH MD1...

Page 19: ...d Host interface Any 1394 OHCI card Host OS Windows 98 2000 Linux 10 3 Imagers Type Zoran PCS2112 CMOS Format Monochrome 8 bits pixel Color 8 bits pixel Bayer pattern Scan mode Progressive Pixel size...

Page 20: ...d frames are proportionally faster e g N x 640 images at no decimation are 15 Hz 10 5 Physical Power 2 watts Cabling Single 6 pin 1394 cable power and signal Stereo module size 5 x 1 75 x 1 1394 modul...

Page 21: ...hnical support please contact Videre Design by email or FAX Videre Design P O Box 585 Menlo Park CA 94026 0585 Fax 650 323 3646 Email support videredesign com Technical information about stereo algori...

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