Kulpa Z
Institute of Biocybernetics and Biomedical Engineering, Warsaw, Poland.
Perception. 1987;16(2):201-14. doi: 10.1068/p160201.
The class of visual illusions called 'impossible figures' (illusory spatial interpretations of pictures) is analyzed in order to introduce an ordering into the great variety of such figures. Such an ordering facilitates reference, unifies terminology, and establishes a conceptual framework for further investigations of the subject, making easier the choice and systematic generation of various types of figures (for example, in systematic psychological experiments). First, the notion of 'impossible figure' is defined and certain other related classes of figures (so-called 'likely' and 'unlikely' figures) are distinguished. Second, the fundamental 'impossibility sources' are identified as elementary 'building blocks' of all impossible figures. Finally, two broad classes of impossible figures, multibars (or 'impossible polygons') and striped figures, are briefly described.
为了对种类繁多的“不可能图形”（对图片的虚幻空间解读）这类视觉错觉进行排序，对其进行了分析。这样的排序便于查阅、统一术语，并为该主题的进一步研究建立概念框架，从而使各种类型图形的选择和系统生成变得更容易（例如，在系统的心理实验中）。首先，定义了“不可能图形”的概念，并区分了某些其他相关类别的图形（所谓的“可能”和“不太可能”图形）。其次，确定了基本的“不可能源”作为所有不可能图形的基本“构建块”。最后，简要描述了两大类不可能图形，即多杆图形（或“不可能多边形”）和条纹图形。
