Brief Review
Comparisons of existing HSI synthesis. (a)The physical-modeling method induces the HSI formed by the bidirectional reflectance distribution function (BRDF). (b) Affine transformation applies the corresponding transformation to the original HSI. (c) Spectral super-resolution performs spectral expansion to obtain the HSI of the same scene as RGB. (d) Our proposed method can generate new HSI samples by multi-source fusion.
Synthesis Examples
Objective
Generating a vast quantity of diverse, reliable, and high fidelity synthetic HSl samples.
Key oberservation
Similar scenes share common low-rank features that can be described by a few endmembers, while the differences between scenes can be captured in their abundance maps.
Pipeline
Step 1: Unmixing across multi-source data
Step 2: Fusion-based synthesis
Examples of synthetic HSIs of remote sensing scenes
Examples of synthetic HSIs of nature scenes
Typical examples of synthesis abundances, generated HSIs, and corresponding spectral profile
Illustration on each band of the generated synthetic HSIs in the remote sensing scenario, and the last one is the corresponding false-color image (based on bands 15, 32, 49).
