Fig. 1. Schematic of experimental setup.

Fig. 2. Sampling diagrams in the Hadamard spectral domain for different sampling strategies (p = q = 256, SR = 10%).

Fig. 3. Hadamard pattern-selection strategy. (a) Sampling path of the energy order, p = q = 256; (b) sampling path of the XY order, p = q = 256; (c) probability function graph at different SRs; (d) sampling diagram in the Hadamard spectral domain for our method (XY + PF).

Fig. 4. Detailed reconstruction results of the resolution target and camera man. (a) Two selected detailed areas of the resolution target; (b) closeups of the number part (SR = 10%); (d) shows the SSIMs in the (b) area. (c) Closeups of the stripe part (SR = 10%); (e) shows the SSIMs in the (c) area. (f) Closeups of the tripod part (SR = 10%); (h) shows the SSIMs in the (f) area. (g) Closeups of the face part (SR = 10%); (i) shows the SSIMs in the (g) area.

Fig. 5. Detailed experimental reconstruction results. (a) Selected detailed area of the target object; (b) SSIMs in detailed area; (c) closeups of details (SR = 40%) and intensity profiles of the cross section red and blue lines depicted in (a).