Abstract
The Moiré fringe patterns obtained when a CCD camera views a repetitive line grating can be exploited to measure small changes to surface displacements. We describe how curved surfaces with line grating patterns can be reconstructed by analysing the instantaneous frequency of the extracted 1D Moiré waveform. Experimental results show that monotonically increasing displacements of a stretched canvas of less than 1mm can be clearly separated, suggesting the possibility of using the proposed Moiré-based vision technique to construct accurate pressure-sensitive touch surfaces.
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Tu, T., Goh, W.B. (2009). Using CCD Moiré Pattern Analysis to Implement Pressure-Sensitive Touch Surfaces. In: Jiang, X., Petkov, N. (eds) Computer Analysis of Images and Patterns. CAIP 2009. Lecture Notes in Computer Science, vol 5702. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-03767-2_149
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DOI: https://doi.org/10.1007/978-3-642-03767-2_149
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