Brightness contrast from inhomogeneous surrounds
Brightness contrast from inhomogeneous surrounds
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DOI：
10.1016/0042-6989(95)00217-0
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发表时间：
1996-06-01
期刊：
影响因子：
1.8
通讯作者：
Shevell, SK
中科院分区：
文献类型：
--
作者：
Schirillo, JA;Shevell, SK
调整不均匀（“棋盘”）环境中测试的亮度，以匹配均匀环境中比较片的亮度。所有的刺激都是无色的。两个环境具有相同的空间平均亮度。在增量比较补丁的情况下，在较亮和较暗检查的亮度之间的亮度处的棋盘内测试看起来比在均匀环绕内观看时更暗。然而，递减的比较块与几乎不受周围环境的不均匀性影响的测试亮度相匹配。一般来说，测试的亮度既不受非均匀环境的空间平均亮度的影响，也不受任何等效均匀环境的影响，而与亮度无关。我们考虑替代模型的亮度的区域，既不是严格的增量，也不是相对于相邻的周围表面递减。版权所有（C）1996 Elsevier Science Ltd.
The luminance of a test within an inhomogeneous (''checkerboard'') surround was adjusted to match the brightness of a comparison patch within a uniform surround. All stimuli were achromatic. Both surrounds had the same space-averaged luminance. With an incremental comparison patch, a test-within-checkerboard at a luminance between the luminances of the brighter and dimmer checks appears dimmer than if viewed within the uniform surround. A decremental comparison patch, however, is matched by a test luminance that is little affected by the inhomogeneity of the surround. In general, the brightness of the test is mediated neither by the space-averaged luminance of an inhomogeneous surround, nor by any equivalent uniform surround, regardless of luminance. We consider alternative models for the brightness of a region that is neither strictly an increment nor decrement with respect to contiguous surrounding surfaces. Copyright (C) 1996 Elsevier Science Ltd.