Equilibrium temporal dynamics of neon color spreading
Equilibrium temporal dynamics of neon color spreading
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霓虹灯色彩传播的平衡时间动态
DOI：
10.1167/jov.20.11.756
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发表时间：
2020
影响因子：
1.8
通讯作者：
Eskew, Jr.
中科院分区：
文献类型：
--
作者：
He, Jingyi;Taveras Cruz, Yesenia;Mingolla, Ennio;Eskew, Jr.
霓虹色错觉揭示了人类视觉系统的基本特性（Van Tuijl, 1975; Varin, 1971），因为颜色的感知填充被认为是表面补全和物体识别的基础。虽然对霓虹灯色彩传播的空间因素进行了广泛的研究，但对其时间动态特征的研究有限。我们测量了氖色扩散的时间调制传递函数（MTF）。两名具有正常色觉和矫正过的视敏度的有经验的观察者完成了阈值测量，以检测同一显示器中十字（真实色）和霓虹灯扩散（虚幻色）的闪烁。在一个8× 8 （2.24× 2.24度）的黑色网格上，分别放置5个参考交叉和5个试验交叉，试验交叉形成两个向左和向右的线形。每个测试十字的偏心率约为0.66度。显示器中的测试十字在互补的红色和蓝色（双极闪烁）之间或在红色和灰色（单极闪烁）之间正弦闪烁，参考十字的颜色固定在测试颜色的中色度。在0.5 Hz到10 Hz或更高的时间频率范围内，对两种颜色条件（单极和双极）和两种任务（判断真实和虚幻的颜色）的灵敏度进行了测量。闪烁交叉的所有MTF曲线在所有频率下都比霓虹色MTF曲线具有更高的灵敏度，并且几乎所有MTF都具有清晰的带通形状。对于每个观察者来说，单极和双极条件下的MTF在形状上是不同的，这表明对双极闪烁的红色和蓝色叶的动态响应可能存在差异。
The neon color illusion reveals fundamental properties of the human visual system (Van Tuijl, 1975; Varin, 1971), as perceptual filling-in of color is thought to underlie surface completion and object recognition. Although spatial factors of neon color spreading have been extensively studied, limited research has characterized its temporal dynamics. We measured the temporal modulation transfer function (MTF) of neon color spreading. Two practiced observers with normal color vision and corrected acuity completed threshold measurements for detection of flicker for crosses (real color) and neon spreading (illusory color) in the same display. Five reference crosses and five test crosses were presented on an 8× 8 black grid (2.24× 2.24 deg), with the test crosses forming two chevrons pointing left and right. Each test cross was at an eccentricity of about 0.66 deg. The test crosses in the display sinusoidally flickered either between complementary red and blue (bipolar flicker), or between red and grey (unipolar flicker), and the color of the reference crosses was fixed at mid-chromaticity of the test colors. Sensitivity was measured for temporal frequencies from 0.5 Hz to 10 Hz or higher for both color conditions (unipolar and bipolar) and both tasks (judging real and illusory colors). All MTF curves for flickering crosses have higher sensitivities than the neon color MTFs at all frequencies, and nearly all MTFs have a clearly band-pass shape. For each observer the MTF for the unipolar and bipolar conditions are different in shape, suggesting possible differences in dynamics of responses to the red and blue lobes of the bipolar flicker.