Predicting Illusory Contours Without Extracting Special Image Features
Boundary completion is one of the desired properties of a robust object boundary detection model, since in real-word images the object boundaries are commonly not fully and clearly seen. An extreme example of boundary completion occurs in images with illusory contours, where the visual system comple...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2019-01-01
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| Series: | Frontiers in Computational Neuroscience |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/article/10.3389/fncom.2018.00106/full |
| _version_ | 1811317513854648320 |
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| author | Albert Yankelovich Hedva Spitzer |
| author_facet | Albert Yankelovich Hedva Spitzer |
| author_sort | Albert Yankelovich |
| collection | DOAJ |
| description | Boundary completion is one of the desired properties of a robust object boundary detection model, since in real-word images the object boundaries are commonly not fully and clearly seen. An extreme example of boundary completion occurs in images with illusory contours, where the visual system completes boundaries in locations without intensity gradient. Most illusory contour models extract special image features, such as L and T junctions, while the task is known to be a difficult issue in real-world images. The proposed model uses a functional optimization approach, in which a cost value is assigned to any boundary arrangement to find the arrangement with minimal cost. The functional accounts for basic object properties, such as alignment with the image, object boundary continuity, and boundary simplicity. The encoding of these properties in the functional does not require special features extraction, since the alignment with the image only requires extraction of the image edges. The boundary arrangement is represented by a border ownership map, holding object boundary segments in discrete locations and directions. The model finds multiple possible image interpretations, which are ranked according to the probability that they are supposed to be perceived. This is achieved by using a novel approach to represent the different image interpretations by multiple functional local minima. The model is successfully applied to objects with real and illusory contours. In the case of Kanizsa illusion the model predicts both illusory and real (pacman) image interpretations. The model is a proof of concept and is currently restricted to synthetic gray-scale images with solid regions. |
| first_indexed | 2024-04-13T12:09:29Z |
| format | Article |
| id | doaj.art-7aeb787c60004e85b4e8205406aaa7e9 |
| institution | Directory Open Access Journal |
| issn | 1662-5188 |
| language | English |
| last_indexed | 2024-04-13T12:09:29Z |
| publishDate | 2019-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Computational Neuroscience |
| spelling | doaj.art-7aeb787c60004e85b4e8205406aaa7e92022-12-22T02:47:31ZengFrontiers Media S.A.Frontiers in Computational Neuroscience1662-51882019-01-011210.3389/fncom.2018.00106414020Predicting Illusory Contours Without Extracting Special Image FeaturesAlbert Yankelovich0Hedva Spitzer1Department of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv, IsraelFaculty of Engineering, School of Electrical Engineering, Tel Aviv University, Tel Aviv, IsraelBoundary completion is one of the desired properties of a robust object boundary detection model, since in real-word images the object boundaries are commonly not fully and clearly seen. An extreme example of boundary completion occurs in images with illusory contours, where the visual system completes boundaries in locations without intensity gradient. Most illusory contour models extract special image features, such as L and T junctions, while the task is known to be a difficult issue in real-world images. The proposed model uses a functional optimization approach, in which a cost value is assigned to any boundary arrangement to find the arrangement with minimal cost. The functional accounts for basic object properties, such as alignment with the image, object boundary continuity, and boundary simplicity. The encoding of these properties in the functional does not require special features extraction, since the alignment with the image only requires extraction of the image edges. The boundary arrangement is represented by a border ownership map, holding object boundary segments in discrete locations and directions. The model finds multiple possible image interpretations, which are ranked according to the probability that they are supposed to be perceived. This is achieved by using a novel approach to represent the different image interpretations by multiple functional local minima. The model is successfully applied to objects with real and illusory contours. In the case of Kanizsa illusion the model predicts both illusory and real (pacman) image interpretations. The model is a proof of concept and is currently restricted to synthetic gray-scale images with solid regions.https://www.frontiersin.org/article/10.3389/fncom.2018.00106/fullfigure ground segregationillusory contoursfunctional minimizationmultiple perceptionscomputational Gestalt |
| spellingShingle | Albert Yankelovich Hedva Spitzer Predicting Illusory Contours Without Extracting Special Image Features Frontiers in Computational Neuroscience figure ground segregation illusory contours functional minimization multiple perceptions computational Gestalt |
| title | Predicting Illusory Contours Without Extracting Special Image Features |
| title_full | Predicting Illusory Contours Without Extracting Special Image Features |
| title_fullStr | Predicting Illusory Contours Without Extracting Special Image Features |
| title_full_unstemmed | Predicting Illusory Contours Without Extracting Special Image Features |
| title_short | Predicting Illusory Contours Without Extracting Special Image Features |
| title_sort | predicting illusory contours without extracting special image features |
| topic | figure ground segregation illusory contours functional minimization multiple perceptions computational Gestalt |
| url | https://www.frontiersin.org/article/10.3389/fncom.2018.00106/full |
| work_keys_str_mv | AT albertyankelovich predictingillusorycontourswithoutextractingspecialimagefeatures AT hedvaspitzer predictingillusorycontourswithoutextractingspecialimagefeatures |