Fig. 2: Experimental imaging within thin to thick parafilm under single-colour LED illumination.

a–d Movable objects consisting of two 10 μm width lines (a), three 5 μm width lines [source data are provided as a Source data file in the Supplementary Information] (b), six 1 μm width lines (c) and a number-shaped object with a height of 100 μm (d) are embedded in parafilm of 6, 14, 22 and 0 layers. One of the recorded speckle images, the constructed autocorrelation and the reconstructed image are successively shown in each inset. Scale bars: 10 μm.