Transparent layer constancy under changes in illumination color: Does task matter?
Transparent layer constancy under changes in illumination color: Does task matter?
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DOI：
10.1016/j.visres.2015.09.003
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发表时间：
2015-11-01
期刊：
影响因子：
1.8
通讯作者：
Falkenberg, Charlotte
中科院分区：
文献类型：
--
作者：
Faul, Franz;Falkenberg, Charlotte
如果透明物体的感知透射率在光源之间匹配，则只能发现不完全恒定性。这意味着物理上相同的物体可能看起来不同。然而，据文献报道，即使通过违反几何透明度条件来抑制透明度印象，受试者也几乎可以完美地识别跨光源的此类物体。对这些发现的一个潜在解释是（a）识别和匹配依赖于不同的标准和过程，并且（b）识别仅基于低级颜色信息。我们在这里提出反对这些假设的证据。我们的结果表明，最佳匹配，即测试光源下与标准最相似的透明物体，也是识别任务中的首选物体。此外，我们发现，如果图形线索支持透明印象和伴随的颜色分离，这两项任务的稳定性程度都会增加。我们讨论这些发现所暗示的匹配和识别之间的关系。 (C) 2015 Elsevier Ltd. 保留所有权利。
If the perceived transmittances of transparent objects are matched across illuminants, only incomplete constancy is found. This implies that physically identical objects may appear different. Nevertheless, it was reported in the literature that subjects could almost perfectly identify such objects across illuminants, even if a transparency impression was suppressed by violating geometric transparency conditions. A potential interpretation of these findings is that (a) identification and matching rely on different criteria and processes and that (b) identification is solely based on low-level color information. We here present evidence against these hypotheses. Our results show that the best match, that is, the transparent object under the test illuminant that appears most similar to the standard, is also the preferred object in the identification task. Furthermore, we found that the degree of constancy increases in both tasks, if figural cues support a transparency impression and the accompanying color scission. We discuss the relation between matching and identification suggested by these findings. (C) 2015 Elsevier Ltd. All rights reserved.