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Coded Aperture Snapshot Spectral Imaging (CASSI) L1-003
Compressive ImagingHyperspectral snapshotδ=3 · standardL_DAG = 3.7
Read full 4-layer walkthrough →Forward model E
Single-shot compressive spectral forward model: a 2D binary coded aperture modulates the scene, a prism disperses each spectral band by a pixel-linear shift, and the detector integrates the dispersed, modulated cube onto a 2D snapshot.
L-DAG
L.broadcast.spectral -> L.diag.binary -> L.shear.spectral -> int.spectral
L.broadcast.spectralL.diag.binaryL.shear.spectralint.spectral
Well-posedness W
- Existence:
- true
- Uniqueness:
- true
- Stability:
- conditional
- κ:
- 5000
underdetermined compressive recovery (N_bands:1 compression); binary random mask at 50% fill satisfies RIP-like conditions; recovery unique under spectral sparsity prior; stability governed by mask quality and calibration accuracy.
Solvability C
- Solver class:
- iterative_proximal (GAP-TV, ADMM, PnP) or learned unrolling (HSICNN, MST-L)
- Convergence rate q:
- 2
- Complexity:
- O(H * W * N_bands * log(H*W)) per iteration (FFT-based forward/adjoint)
Specs (1)
| Spec ID | Title | Type | d_spec |
|---|---|---|---|
| L2-003 | CASSI Mismatch-Only Spec (KAIST benchmark family) | mismatch_only | 0.45 |
Treasury (T_k)
Balance: 0 PWM
Minting
Total minted: 0 PWM