Checking the input

2.3

CALCULATING THE PRIMARY IMAGES

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Checking the input

To check the orientation of the input stack, the first rotation image, (where rotation = 0°) is colour-coded, using the "Positive LUT" from the NIH Image Macro "Lazy LUT". Dark grains are assigned first order blue, light grains first order yellow. Postprocessing is nice but not necessary. Comparing this image to what can be observed through the microscope one immediately sees if everything is alright or not. - By choosing a negative instead of the positive LUT, quartzite is easily converted into a marble...(see below).

Left, from top to bottom:

- Colour-coding of the first rotation image, using the positive LUT (see inset) from the "Lazy LUT" macro

- RGB image, as taken through the microscope

- Colour-coded rotation image (same as top) with some additional postprocessing

Below:

"Optical phase transformation" using the negative LUT (see inset)

2.3	CALCULATING THE PRIMARY IMAGES
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		Checking the input
		To check the orientation of the input stack, the first rotation image, (where rotation = 0°) is colour-coded, using the "Positive LUT" from the NIH Image Macro "Lazy LUT". Dark grains are assigned first order blue, light grains first order yellow. Postprocessing is nice but not necessary. Comparing this image to what can be observed through the microscope one immediately sees if everything is alright or not. - By choosing a negative instead of the positive LUT, quartzite is easily converted into a marble...(see below). Left, from top to bottom: - Colour-coding of the first rotation image, using the positive LUT (see inset) from the "Lazy LUT" macro - RGB image, as taken through the microscope - Colour-coded rotation image (same as top) with some additional postprocessing Below: "Optical phase transformation" using the negative LUT (see inset)