eprintid: 15209
rev_number: 21
eprint_status: archive
userid: 687
dir: disk0/00/01/52/09
datestamp: 2013-07-15 12:42:42
lastmod: 2016-01-09 18:15:47
status_changed: 2013-07-15 12:42:42
type: article
metadata_visibility: show
creators_name: Flood, Colin
creators_name: Köthe, Ullrich
creators_name: Zink, Ralf
corp_creators: Teledyne Dalsa
corp_creators: Universität Heidelberg
corp_creators: Robert Bosch GmbH
title: Using an n-zone TDI camera for acquisition of multiple images with different illuminations in a single scan
subjects: ddc-004
subjects: ddc-620
subjects: ddc-670
divisions: i-708000
abstract: For fast scanning of large surfaces with microscopic resolution or for scanning of roll-fed material, TDI
line scan cameras are typically used. TDI cameras
sum up the light collected in adjacent lines of the 
image sensor synchronous to the motion of the object.
Therefore TDI cameras have much higher sensitivity
than standard line cameras. For many applications
in the field of optical inspection more than one image of the object under test are needed with different
illumination situations. For this task we need either
more than one TDI camera or we have to scan the object several times in different illumination situations.
Both solutions are often not entirely satisfying. In
this paper we present a solution of this task using a
modified TDI sensor consisting of three or more separate TDI zones. With this n-zone TDI camera it
is possible to acquire multiple images with different
illuminations in a single scan. In a simulation we
demonstrate the principle of operation of the camera
and the necessary image preprocessing which can be
implemented in the frame grabber hardware.
date: 2013-07-12
id_scheme: DOI
id_number: 10.11588/heidok.00015209
ppn_swb: 165292874X
own_urn: urn:nbn:de:bsz:16-heidok-152096
language: eng
bibsort: FLOODCOLINUSINGANNZO20130712
full_text_status: public
citation:   Flood, Colin ; Köthe, Ullrich ; Zink, Ralf  (2013) Using an n-zone TDI camera for acquisition of multiple images with different illuminations in a single scan.         
document_url: https://archiv.ub.uni-heidelberg.de/volltextserver/15209/1/flood_13_n-zone-TDI-camera.pdf