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| Description
| - This paper deals with image-based displacement measurement. The correlation method of displacement measurement computes the cross-correlation function from two images captured by a CCD camera. The shift level is then determined by the position of the maximum value of the cross-correlation function. If the cross-correlation function is computed directly from two pictures, it is possible to determine the shift level only with resolution on whole pixels. If sub-pixel resolution is required, it is necessary to use interpolation. Interpolation of the input sequences requires high performance and expensive digital signal processors or field programmable gate arrays, therefore for a real-time application it is necessary to acquire the information about sub-pixel shift from a computed cross-correlation function. This paper describes two new real time methods which can obtain the information of the sub-pixel shift from the shape of the maximum of the cross-correlation function and its shape.
- This paper deals with image-based displacement measurement. The correlation method of displacement measurement computes the cross-correlation function from two images captured by a CCD camera. The shift level is then determined by the position of the maximum value of the cross-correlation function. If the cross-correlation function is computed directly from two pictures, it is possible to determine the shift level only with resolution on whole pixels. If sub-pixel resolution is required, it is necessary to use interpolation. Interpolation of the input sequences requires high performance and expensive digital signal processors or field programmable gate arrays, therefore for a real-time application it is necessary to acquire the information about sub-pixel shift from a computed cross-correlation function. This paper describes two new real time methods which can obtain the information of the sub-pixel shift from the shape of the maximum of the cross-correlation function and its shape. (en)
- Tento přípěvek se zabývá obrazovým měřením posuvu. Korelační metoda měření posuvu počítá vzájemnou korelační funkci ze snímků zachycených řádkovou CCD kamerou, proto je měření posuvu možno provádět pouze v jedné ose. Pokud je korelační funkce počítána přímo ze snímků, lze dosáhnout přesnosti na celé pixely. Chceme-li dosáhnout vyššího rozlišení, musíme použít interpolaci. Interpolace vstupních dat je příliš náročná na hardware, proto pro aplikace běžící v reálném čase je nutno interpolovat vzájemnou korelační funkci. Tento příspěvek popisuje dvě nové interpolační metody, které určují sub-pixelovou hodnotu posuvu z tvaru maxima vzájemné korelační funkce. (cs)
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| Title
| - New Interpolation Methods for Image-based Sub-pixel Displacement Measurement
- Nové interpolační metody pro obrazové sub-pixelové měření posuvu korelační metodou (cs)
- New Interpolation Methods for Image-based Sub-pixel Displacement Measurement (en)
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| skos:prefLabel
| - New Interpolation Methods for Image-based Sub-pixel Displacement Measurement
- Nové interpolační metody pro obrazové sub-pixelové měření posuvu korelační metodou (cs)
- New Interpolation Methods for Image-based Sub-pixel Displacement Measurement (en)
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| skos:notation
| - RIV/68407700:21230/07:03129820!RIV08-MSM-21230___
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| http://linked.open.../vavai/riv/strany
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/68407700:21230/07:03129820
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - cross-correlation function; image-based displacement measurement (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...v/mistoKonaniAkce
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| http://linked.open...i/riv/mistoVydani
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| http://linked.open...i/riv/nazevZdroje
| - IMTC/2007 IEEE Instrumentation and Measurement Technology Conference Proceedings
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...UplatneniVysledku
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| http://linked.open...iv/tvurceVysledku
| - Fischer, Jan
- Říha, Lubomír
- Šmíd, Radislav
- Dočekal, Adam
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| http://linked.open...vavai/riv/typAkce
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| http://linked.open.../riv/zahajeniAkce
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| http://linked.open...n/vavai/riv/zamer
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| number of pages
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| http://purl.org/ne...btex#hasPublisher
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| https://schema.org/isbn
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| http://localhost/t...ganizacniJednotka
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