Pattern masking: the importance of remote spatial frequencies and their phase alignment.
Pattern masking: the importance of remote spatial frequencies and their phase alignment.
复制标题
图案掩蔽：远程空间频率及其相位对齐的重要性。
DOI：
10.1167/12.2.14
复制
发表时间：
2012
影响因子：
1.8
通讯作者：
Huang PC
中科院分区：
文献类型：
--
作者：
Huang PC
为了评估掩模中掩模成分的空间频率和相位对准对齐的影响，测量了正弦波栅(S)目标的目标阈值与掩模对比度的函数，包括正弦波栅(S)、方波栅格(Q)、缺失基波栅格(M)、方波混频谐波组成的谐波复合体(QP)和缺失基频方波(MP)的混频谐和复合体。目标和掩模具有相同的基频(0.46cpd)，并且目标与掩模的基频分量同相相加。在单目观察条件下，掩蔽的强度取决于远离目标的掩蔽空间频率之间的相位关系，至少是目标频率的3倍，只有当存在共同的目标和掩蔽空间频率时。在双视觉条件下，S和Q掩模产生的掩蔽相似，而相位加扰掩模(QP和MP)产生的掩蔽较少。结果表明，模式掩蔽本质上是空间频率宽带的，并且对空间分量的相位对准非常敏感。
To assess the effects of spatial frequency and phase alignment of mask components in pattern masking, target threshold vs. mask contrast (TvC) functions for a sine-wave grating (S) target were measured for five types of mask: a sine-wave grating (S), a square-wave grating (Q), a missing fundamental square-wave grating (M), harmonic complexes consisting of phase-scrambled harmonics of a square wave (Qp), and harmonic complexes consisting of phase-scrambled harmonics of a missing fundamental square wave (Mp). Target and masks had the same fundamental frequency (0.46 cpd) and the target was added in phase with the fundamental frequency component of the mask. Under monocular viewing conditions, the strength of masking depends on phase relationships among mask spatial frequencies far removed from that of the target, at least 3 times the target frequency, only when there are common target and mask spatial frequencies. Under dichoptic viewing conditions, S and Q masks produced similar masking to each other and the phase-scrambled masks (Qp and Mp) produced less masking. The results suggest that pattern masking is spatial frequency broadband in nature and sensitive to the phase alignments of spatial components.
登录
查看更多内容
立体声和运动空间通道的可访问性
影响因子：
1.8
作者：
R. Hess;Yizhong Wang;C. Liu
通讯作者：
C. Liu
影响因子：
1.8
作者：
Holmes, DJ;Meese, TS
通讯作者：
Meese, TS
DOI：
10.1364/josaa.2.001508
发表时间：
1985-01-01
影响因子：
1.9
作者：
PELLI, DG
通讯作者：
PELLI, DG
影响因子：
1.4
作者：
Clifton Schor;P. Erickson
通讯作者：
P. Erickson
影响因子：
3.4
作者：
M. Collins;A. Goode
通讯作者：
M. Collins;A. Goode