Shredded input
The strips, scrambled. This is all the scanner gets.
Reconstruction
What the scanner rebuilt from the scrambled strips.
How it works: the scanner compares the torn pixel edge of every strip against every other, scoring how well each pair would continue, then chains the best matches into order. Straight talk: rebuilding a scrambled digital image is real and works well — you see the seam-accuracy score it earned. Reconstructing an actual pile of physically shredded paper from a phone photo is a research-grade problem, so this focuses on the version that genuinely works.