Université de Neuchâtel

The Discrete Cosine Transform, a Fourier-related Method for Morphometric Analysis of Open Contours

Dommergues, Cyril H. ; Dommergues, Jean-Louis ; Verrecchia, Eric P.

In: Mathematical Geology, 2007, vol. 39, no. 8, p. 749-763

The discrete cosine transform (DCT) is described and then tested to see whether it is a suitable Fourier-related method for morphometric analysis of open outlines. While most Fourier methods are mainly effective with closed outlines, the DCT can handle open curves too, making it useful for quantitative descriptions of a broad range of natural objects. Like other Fourier-type methods, the DCT...