Dolan, "Distinct spatial frequency
sensitivities for processing faces and emotional expressions," Nature Neuroscience, vol.
An improvement of CS values between the spontaneous and delayed SRF resolution was not significantly different, except for CS at a spatial frequency
of 12 cpd.
During the test, the parameters of the sinusoidal bar such as lumination, contrast, and spatial frequency
Another convenience of this illumination pattern is seen in its spatial frequency
domain representation which is a sum of three of delta functions by Lal et al.
It is an improved NSCT-PCNN based fusion method [10, 12, 14] named as NSCT_PCNN_2, where the NSML and modified spatial frequency
(MSF) are as the external input of PCNN for low- and high-pass subbands, respectively.
This helps to allow removing of high spatial frequent patterns including possible Gaussian noise spatial frequency
parts of input image without fine tuning the parameter.
Before the session, the volunteers were told to press the left mouse button when they thought the test stimulus (spatial frequency
) was presented in the first 2-s interval, and right-click if they thought that it was presented in the second 2-s interval--that is, after the neutral stimulus.
Therefore, the target spread function is transformed from spatial domain to spatial frequency
Assume that the surface modulation of the elastic film has a spatial frequency
This argument is backed up by recent findings indicating that, although progressive low-pass spatial frequency
filtering (i.e., high spatial frequencies are eliminated) dampens subjective valence and arousal ratings of complex emotional pictures, such filtering does not fully 'neutralize' the valence and arousal of the scenes (De Cesarei & Codispoti, 2008).
If we move away from an image, we perceive increasingly less details, that is, the high spatial frequency
components, while low frequencies remain visible and are the last to disappear."
(DIN ISO 10110-8) The equation 1 describes the functional relation of spectral power density and spatial frequency