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© Beta Systems Software AG 20081 Process Stages of Census Surveys Richard J. Lang, International Manager September 2008, Bangkok
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© Beta Systems Software AG 20082 Agenda Scanning Recognition Verifying Processes The solution Data capture Census Process internal Census data flow Quality assurance
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© Beta Systems Software AG 20083 Scanning
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© Beta Systems Software AG 20084 Scanning Simultaneous creation of up to six images Optical lens > 10 mm, sharpness-depth-area 3 mm Optical und ultrasonic double feed control Energy saving / live cycle extending Mode Consistent jam handling: no document is lost or double captured due to physical jams cleanness check program: detects white - and black dirt spots
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© Beta Systems Software AG 20085 Scanning Pockets 2 – 12 why: if the document is scanned skewed or de-skewed if the very important questions are filled / are readable (if OMR, OCR, Barcode) if there are fingerprints on the questionnaire or not if the Barcode/OCR/OMR numbers (not ICR) numbers are in the given range if there are double entries – we check the unique number if there are (colour) copies used if there are mismatches in quantity: Batch header shows 50 and only 40 are scanned Transport stop can be programmed to clarify the issue
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© Beta Systems Software AG 20086 Scanning Customer: I have a printer and print since long my own questionnaire …I learnt from the internet that it is just a matter of software … Before printing we should be consulted to give best advices, we will test and optimize. Single side printing or higher scaled paper is necessary (shine through factor = opacity) Paper should be white without any spots inside Discuss different methods before making big investments
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© Beta Systems Software AG 20087 Scanning Batch EA Doc Sheet Image Page Image Grey Image B/W Sheet Side 1 Side 2 Side Page Image color
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© Beta Systems Software AG 20088 Analyze the structure of documents for identification The Path to Recognition
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© Beta Systems Software AG 20089 The Path to Recognition Perform proper clean-up and image pre-processing Analyze individual page layout Dynamically locate fields of interest Character recognition (numeric handwriting, voted) Compile results
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© Beta Systems Software AG 200810
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© Beta Systems Software AG 200811 Recognition – Image Pre-processing 1 8 Skewed document... …after alignment
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© Beta Systems Software AG 200812 Recognition: Noise and box removal
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© Beta Systems Software AG 200813 Verifying Processes Unique Number – double Scan check Double feed check Check if Copy Trace of all editing work Logical checks Completeness checks Reports
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© Beta Systems Software AG 200814 The Solution: SC80HC + FC Census Formx Batch Header Work Data Storage VSAT FC Census recognition Preparation: cut & jogg PaperArchive PaperArchive Data + Images Editing Archive Data Storage TAPE Export CSPro Local reports
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© Beta Systems Software AG 200815 Data capture Data Processing Centres in different locations Peak period 3 shifts, average 1-2 shifts Local operators trained by our supervisors Supervisors local Central support from Lab Training & documentation realised in advance Help to design the documents
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© Beta Systems Software AG 200816 Census Process internal Command Processing Form Type Analysis Structure Analysis ICR Result Analysis ICR voting ICR 1 ICR 2 Logical Result Analysis Output Assembly Editing
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© Beta Systems Software AG 200817 Census data flow Process Station 1 Server logical Network. Process flow controlled via process queues. „outside world“ Process Station 2 Process Station 3 Process Station “n”
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© Beta Systems Software AG 200818 Quality assurance Form design with scanning quality check Before delivery of paper scanning quality check Confirm the quantity of forms Make use of Trial Census experience Establish checks for essential criteria only Make day to day checks during the running Census As soon as possible check the results and verify Back up / Reporting National / International Supervisors
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© Beta Systems Software AG 200819 Thank you! We are prepared for your Census
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