Multispectral Imaging (2020) by Tony Richards

ImageJ is an open source image processing program for multidimensional image data with a specific focus on scientific image analysis. We use ImageJ for processing multispectral image data of palimpsests, faded and obscured texts and also for pigment analysis using spectral reflectance curves. We use it in a very specific way with a tested workflow and set of tools.

For the my Isolated View, I thought I’d take a look through the multitude of plugins and macros available on ImageJ. I had a basis of an idea from our work with spectral curves of pigments and was interested in alternative ways of visualising data.

The plugin that caught my attention was the Interactive 3D Surface Plot plugin. This plugin creates interactive surface plots, the luminance of an image is interpreted as height for plotting in a graphical space. Luminance is best characterised, in this case, as an indication of the brightness of a surface to the human eye.

The results from this software mapping look remarkably like the examples we have followed in our Processing tutorials.

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