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The Importance of 'Mass' in Line Drawings of Faces.

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Title: The Importance of 'Mass' in Line Drawings of Faces.
Authors: Bruce, Vicki, Hanna, Elias, Dench, Neal, Healey, Pat, Burton, Mike
Source: Applied Cognitive Psychology. Dec92, Vol. 6 Issue 7, p619-628. 10p.
Subjects: Portrait drawing, Computer drawing, Drawing instruments, Caricatures & cartoons, Graphic arts, Visual communication
Abstract: Previous research (Davies, Ellis and Shepherd, 1918; Rhodes, Brennan and Carey, 1987) has shown that accurate line drawings of familiar faces are identified rather poorly. However, artists can produce lifelike portraits with pen and ink, and Pearson and Robinson (1985) described an automatic method for producing computer-drawn sketches ('cartoons') of faces which appear very similar to those produced by a human artist. In this paper we show that subjects can identify famous faces depicted in such computer-drawn 'cartoons' almost as well as full grey-scale images. The cartoon algorithm comprises two components. One component thaws lines at the locations of intensity changes corresponding to luminance valleys and edges (the valledge' detector). The other component applies a 'threshold' to the original intensity distribution, and replaces any area darker than threshold with black. Thus the full cartoon contains both 'line' and 'mass'. Neither the valledges nor the threshold components alone were as welt identified as full cartoons containing both components. The results suggest that the addition of the threshold component adds significantly to the identifiability of line drawings of laces. [ABSTRACT FROM AUTHOR]
Copyright of Applied Cognitive Psychology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: <searchLink fieldCode="AR" term="%22Bruce%2C+Vicki%22">Bruce, Vicki</searchLink><br /><searchLink fieldCode="AR" term="%22Hanna%2C+Elias%22">Hanna, Elias</searchLink><br /><searchLink fieldCode="AR" term="%22Dench%2C+Neal%22">Dench, Neal</searchLink><br /><searchLink fieldCode="AR" term="%22Healey%2C+Pat%22">Healey, Pat</searchLink><br /><searchLink fieldCode="AR" term="%22Burton%2C+Mike%22">Burton, Mike</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Applied+Cognitive+Psychology%22">Applied Cognitive Psychology</searchLink>. Dec92, Vol. 6 Issue 7, p619-628. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Portrait+drawing%22">Portrait drawing</searchLink><br /><searchLink fieldCode="DE" term="%22Computer+drawing%22">Computer drawing</searchLink><br /><searchLink fieldCode="DE" term="%22Drawing+instruments%22">Drawing instruments</searchLink><br /><searchLink fieldCode="DE" term="%22Caricatures+%26+cartoons%22">Caricatures & cartoons</searchLink><br /><searchLink fieldCode="DE" term="%22Graphic+arts%22">Graphic arts</searchLink><br /><searchLink fieldCode="DE" term="%22Visual+communication%22">Visual communication</searchLink>
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  Data: Previous research (Davies, Ellis and Shepherd, 1918; Rhodes, Brennan and Carey, 1987) has shown that accurate line drawings of familiar faces are identified rather poorly. However, artists can produce lifelike portraits with pen and ink, and Pearson and Robinson (1985) described an automatic method for producing computer-drawn sketches ('cartoons') of faces which appear very similar to those produced by a human artist. In this paper we show that subjects can identify famous faces depicted in such computer-drawn 'cartoons' almost as well as full grey-scale images. The cartoon algorithm comprises two components. One component thaws lines at the locations of intensity changes corresponding to luminance valleys and edges (the valledge' detector). The other component applies a 'threshold' to the original intensity distribution, and replaces any area darker than threshold with black. Thus the full cartoon contains both 'line' and 'mass'. Neither the valledges nor the threshold components alone were as welt identified as full cartoons containing both components. The results suggest that the addition of the threshold component adds significantly to the identifiability of line drawings of laces. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Applied Cognitive Psychology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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              Text: Dec92
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