The effect of deviations from linearity on the detection of dotted line patterns.

نویسنده

  • W R Uttal
چکیده

Four experiments were carried out to determine the detectability of dotted linestimulus patterns embedded in backgrounds of randomly dotted visual noise. The resultsindicate that straight lines are more easily detected than curves or angles. This finding holdsrobustly even though interdot spacings (local geometry) are held constant in each experiment.The global organization of the stimulus, therefore, is a strong determinant of the ease of visualpattern detection. The implications of these findings for pattern recognition theory are con-sidered using an optical computer. R&stun;&-On d&rmine; par quatre experiences la possibiiiti de dttecter un stimulus dessinben fignes ponctu&s;, noye dans des fonds de bruit visuel obtenu par des points au hasard. Lesiignes droites sont d&e;&es; plus facilement que les courbes ou les angles. Ce ksuttat rksistesolidement bien que k-s espaces entre points (g-Som&rie; locale) restent constants dans chaque The Detection of Dotted Line Patterns2163 experience.L'organisationglobaledu stimulusdetermine done fortement la facilite de detec-tiondudessin.Onconsidereau moyen d'uncalculateuroptiquelesimplicationsdecesresultats pour la theoriede reconnaissancedes figures. Zusammenfassung--In vier Experimenten wurde die Erkennbarkeit einer punktierten Linieauf einem Rauschmuster untersucht. Die Orgebnisse zeigen, dass gerade Linien leichtererkannt werden als Kurven oder Winkel. Dieses Ergebnis bleibt bestehen, such wenn derAbstand zwischen den Punkten (die lokale Geometrie) bei jedem Versuch konstant gehaltenwird. Die Erkennbarkeit eines Testreizes wird also entscheidend durch seine globale Organisa-tion bestimmt. Die Folgerungen dieser Ergebnisse fur die Mustererkennung werden mit einemoptischen Rechner untersucht. Pe3row--bbtno npowsBeneH0 seTbtpe 3KcnepeblenTa Rna onpeaeneswn 06HapyxeHHRIlaTRpHOB, COCTORLUHX W3 ~-IliHHti 06pa30BaHHblX TO'tKaMH, BKJtKVieHHblXC @OHbI COCTORmWeH3TOSeK,paCnOnO~eHHblX B CJty'iaiiHOMnOpanKe(3pHTeJtbHbltiLUYM). Pe3yJtbTaTblnOKa3bI-Ba~T,~Tonp~MbIen~H~lrO6Hap~~Ba~TCaner9e,~eMKp~abIe~nllH~lin~x~a~eHHbteno~jTJlaMK n0 0THOmeHRFORp)'r KLtpyrj'.3Ta3aKOHOMepHOCTb RCHOCOXpaHReTCRAa)KeTOr3a,KOrIta PaCCTOaHnfl MeWty TO'iKaMW (JtOKa.JtbHaSIreOMeTnrta)COXpaHatOTCR nOCTOIIHHbIMH B KaWtOM H3 3KCnepWMeHTOB. rnO6aJibHaX O~KlHSiIlaUWl CTHMyJla, I'IOMOIM)',C)'LUKTBeHHO0npenenaeT nerxocrb 06HapyxceHHR 3perenbnoro narrepria. Bbtsonbr ~3 ~TBX +aKToB RTR TeOpHB paCnO3HaBaHkia O6pa30B PaCCMOTpeHblC nOMOttlbK3OnTH'ieCKOrOKOMnbtOTepa.

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عنوان ژورنال:
  • Vision research

دوره 13 11  شماره 

صفحات  -

تاریخ انتشار 1973