Free public beta until December 4, 2026: every course is open, no card needed. After that, the first chapter of each course stays free and full access is a one-time $39 ($19 for up to 100 founding members chosen for helpful feedback). Your progress is kept. How the beta works

image-processing

When restoration can't recover what's lost

taught

Why a frequency the PSF destroys exactly can never be recovered by any restoration formula -- a hard floor, not a software shortcoming.

Taught in

When restoration can't recover what's lost
Digital Image Processing

Requires

regularized-restoration-as-an-inverse-problem required

Required by

Global thresholding required

Local knowledge map

Local knowledge map

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Solid arrows are required prerequisites; dashed are recommended or helpful. Lower rows are more foundational. Click any box to jump to that concept.