Analysis of Moiré Pattern Amplitude and Characteristics Based on Twist Angle and Opening Ratio
DOI:
https://doi.org/10.9734/bpi/stda/v10/5151Keywords:
Moiré effect, moiré minimization, moiré amplitude, moiré period, moiré orientation, image quality assessment, displays, moiré techniquesAbstract
Aims: The amplitude, period, and orientation angle of the moiré patterns were obtained as functions of the twist angle. Besides, the amplitude of the moiré patterns was estimated in relation to the opening ratio in line gratings and square grids.
Study Design: The theory was developed; and the experimental measurements were performed.
Methodology: The theoretical interpretation of characteristics was based on the wavevectors and the transfer function. The experiments were conducted using 3D displays and printed samples.
Results: The characteristics of the moiré patterns were found as functions of the angle and opening ratio. The slope and width of the functions were estimated. Simultaneous branches were observed and analyzed. The minimum and the maximum of the amplitude were found. We found the connection between the opening ratio and the magnitude of the moiré patterns in the 1D binary grating, particularly, the extrema. There was a good agreement between the theoretical and experimental data.
Conclusion: The results can be applied to prevent or minimize the moiré effect in displays, improve image quality in autostereoscopic 3D displays, design moiré displays, and perform measurements.
