Fig. 2: Coding strategy of SPI-ASAP.
From: Compressed ultrahigh-speed single-pixel imaging by swept aggregate patterns
a Binary cyclic S-matrix of order \(n=\) 35 (i.e., \(p\)=7 and \(q\)=5). Green boxes (also appearing in (b) and (c)) highlight the role of a single encoding pattern. Purple boxes (also appearing in (b) and (c)) highlight a range of \(p\) rows deployed together in each scan. b Restructured matrix pattern formed from the matrix shown in (a). The numbers represent the corresponding column indices of each element of the first row of the matrix shown in (a), with shaded colors highlighting four tiled copies of the reshaped initial row. The purple-boxed region shows an aggregate pattern that is displayed via DMD. The green-boxed region shows the single encoding pattern (corresponding to row 17) also highlighted in (a). c Arrangement of the bucket signals as a 2D array with numbers corresponding to row indices of the matrix in (a). Gray shading highlights an expected neighbourhood of similar values surrounding the measurement from the encoding pattern highlighted in green in (b). The purple-boxed region shows a row of bucket signals acquired from the deployment of the aggregate pattern highlighted in (b).
