Fig. 1. Simulation experiment with single-source. (a) Digital mouse model containing source; (b) surface intensity distribution obtained by forward simulation

Fig. 2. Cross-sectional views of reconstruction results on the XY plane at Z=9.2 mm center of the real light source obtained by three algorithms in single-source case. (a) PHTPA; (b) HTA ; (c) IRW-L1/2. Black circle represents real light source

Fig. 3. Simulation experiments with double-light source. (a) Digital mouse model containing source; (b) surface intensity distribution when the density ratio is 1∶1; (c) surface intensity distribution when density ratio is 1∶2

Fig. 4. Cross-sectional views of reconstruction results on the XY plane at Z=17.0 mm center of the real light source obtained by three algorithms in double-source case. (a)-(c) Reconstruction results of PHTPA, HTA, and IRW-L_1/2 when the density ratio is 1∶1; (d)-(f) reconstruction results of PHTPA, HTA, and IRW-L_1/2 when the density ratio is 1∶2. Black circle represents the real light source

Fig. 5. Comparison of convergence rates of PHTPA(k=40) and HTA(k=50)

Fig. 6. E_LE of PHTPA and HTA varying with sparse parameter k

Table 1. Optical parameters of digital mouse organs at 670 nm wavelength

Table 2. Reconstruction results in single-source case

Table 3. Reconstruction results in the double-source case when density ratio is 1∶1

Table 4. Reconstruction results in the double-source case with density ratio of 1∶2