Insects could exploit UV-Green contrast for landmark navigation
Insects could exploit UV-Green contrast for landmark navigation
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DOI：
10.1006/jtbi.2001.2484
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发表时间：
2002-02-21
影响因子：
2
通讯作者：
Möller, R
中科院分区：
文献类型：
--
作者：
Möller, R
标记特征的光照不变性检测是昆虫进行标记导航的前提。这表明，昆虫眼睛的紫外线和绿色受体之间的对比机制可以保证自然物体作为前景和天空作为背景之间的强大分离。利用光谱特征与昆虫光感受器相近的紫外通道和绿色通道传感器，采集了自然物体和天空的数据。数据表明，这两个类别可以通过UV-green颜色空间中的固定阈值进行分离，这比纯粹基于uv的分离（需要动态阈值）具有优势。基于数值方法，证明了紫外-绿拮抗比紫外-蓝拮抗能保证更可靠的鉴别。
Illumination-invariant detection of landmark features is a prerequisite for landmark navigation in insects. It is suggested that a contrast mechanism involving the UV and green receptors of insect eyes could guarantee a robust separation between natural objects as foreground and sky as background. Using a sensor with a UV and a green channel that in their spectral characteristics are close to the corresponding insect photoreceptors, data of natural objects and sky were collected. The data show that the two classes can be separated by a fixed threshold in the UV-green color space, offering an advantage over a purely UV-based separation that would require a dynamic threshold. Based on a numerical method, UV-green antagonism is shown to guarantee a more reliable discrimination than UV-blue antagonism.