In the high-frequency range, the abutting lines produced a broader bandwidth and a lower peak value than abutting sinewave gratings.
Other studies suggested that even for abutting line gratings, a filling-in process might not be needed under some circumstances.
In fact, as before, we will use less than a 10-4 proportion of the columns abutting the adjustment window.
Abutting sinewave gratings were presented within circular windows surrounded by a uniform gray background of the same mean luminance.
This linear processing of abutting gratings depends on the carrier phase, which, together with carrier spatial frequency, determines the local luminance energy.
The only singularities are of conical type and occur at the vertices where the number of abutting squares is not equal to four.
Abutting line gratings constructed from white lines were presented against a uniform black background.
In the case of abutting line gratings, the line width was kept at 10% of one carrier cycle.
