Dalsa Piranha ES-80-08k40-00-R User Manual

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Dalsa Piranha ES-80-08k40-00-R User Manual Manual pdf 61 page image

Piranha ES-xx User ManualTeledyne DALSA 03-032-20070-0261Digital Signal ProcessingSubtracting BackgroundPurpose: Use the background subtract command after performing flat fieldcorrection if you w ant to improve your image in a low contrastscene. You should try to make your d arkest pixel in the sceneequal to zero.Syntax ssb t iSyntax Elements: tTap selection. Allow able range is 1 to number of CCD taps,or 0 for all taps.iSubtracted value in a range in DN from 0 to 4095 (12 bit LSB).N otes:  See the follow ing section for d etails on the ssg command .Related Command s ssgExample ssb 0 500Setting Digital GainPurpose: Improves signal output sw ing after a background subtract. Whensubtracting a d igital value from the d igital vid eo signal, using thessb command , the ou tput can no longer reach its maximum. Usethe this command to correct for this w here:ssg value = max output valuemax output value - ssb valueSyntax: ssg t iSyntax Elements: tTap selection. Allow able range is 1 to number of CCDtaps, or 0 for all taps.iGain setting. The gain ranges are 0 to 65535. The d igitalvid eo values are multiplied by this value w here:Digital Gain= 4096N otes:  Use this command in conjunction w ith the ssb command(d escribed above). It is recommend ed that i is never set below 4096. Setting i to0 w ill result in only 0 output d ata. Digital offset is set to zero after send ing the ccf commandRelated Command s: ssb, sdoExample: ssg 1 4500