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Uplands in Lorne is a landscape painting by David Young Cameron (1865-1945) of the Lorne area of the Scottish Highlands (Argyll and Bute). This case study highlights selected results from our analysis of regions of the painting using the PISTACHIO imager – click on each region to learn more.
Enhancing Variations in the Composition
The raw data cube obtained using the PISTACHIO imager contains data across the spectral range of acquisition (from 700 to 1400 cm-1 ). Single-wavelength images can be analysed separately, for example to enhance variations in the composition.
Slice data at 1185 cm-1, which should be typical of oil, for a selected region from Uplands in Lorne, oil on panel, by D. Y. Cameron. This region demonstrates variation in composition of the mountain landscape in the painting by including elements of sky, a tall mountain in the background, and smaller hills in the foreground.
Identifying the Distribution of Compounds
Principal component analysis (PCA) of spectral features can identify clusters that may be representative of different pigment mixtures. Interpretation combines the hyperspectral data with other information such as XRF data.
- Cluster 1 – titanium-zinc white
- Cluster 3 – lead white
- Cluster 4 – ochre; lead white
- Cluster 5 – blue cobalt-based pigment
No graph available as the cluster represents a spectrum with high noise
Cluster data based on principal component analysis for a selected region from Uplands in Lorne, oil on panel, by D. Y. Cameron. This includes the PCA plot, and spectra showing the mean and standard deviation for each individual cluster.
Text and images for slice analysis
Text and images for cluster analysis