Description:

This Master Prompt extends conventional RGB and grayscale image processing to imaging systems in which spectral, thermal, radiographic, microscopic or multimodal information provides additional dimensions of scientific evidence. It covers hyperspectral and multispectral imaging, spectral preprocessing, wavelength selection, spectral–spatial feature extraction, dimensionality reduction, chemometric analysis, infrared and thermal imaging, X-ray and radiographic processing, electron and optical microscopy, image registration, multimodal fusion and cross-modality quantitative analysis. The framework emphasizes that each modality measures a different physical interaction and therefore requires modality-specific calibration, preprocessing, interpretation and validation rather than treating all images as interchangeable arrays of pixels