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Image processing

jems contains a simple image processing engine that allows to apply a few processing algorithms to experimental images like:

Figure 1 shows an experimental SAED and Figure 2 shows the pattern after line detection. The visibility of the Kikuchi band is largely improved by convolving the pattern with a Prewitt kernel.


Figure1

Figure 1 Experimental SAED (Si 200kV).

Figure2

Figure 2 Processing with Prewitt kernel improves the visibility of Kikuchi bands.

Figure3

Figure 3 Further processing with Laplacian kernel.

Figures 4, 5 and 6 show some examples of processing an experimental spot pattern to detect peaks position.

Figure4

Figure 4 Experimental spot DP (inverse contrast).

Figure5

Figure 5 Experimental spot DP (normal contrast).

Figure6

Figure 6 Peaks are marked by a small circle.