Fig. 1. Schematic diagram of objects scanned by light emitter

Fig. 2. Schematic diagram of one ray projection

Fig. 3. Schematic diagram of 25×25 sensor array.(a) Light distribution diagram; (b) diagram of sensitive field

Fig. 4. Schematic diagrams of five section distribution scenarios.(a) 15 radius circle with 'hard edge'; (b) 20 radius circle with 'hard edge';(c) Gauss circle of radius 10 with 'soft edge'; (d) 10 and 20 radius circles with 'hard edge'; (e) 15 and 20 radius circles with 'hard edge'

Fig. 5. Comparison curve of iteration times and relative error of different algorithms. (a) Scene 1; (b) scene 2; (c) scene 3; (d) scene 4; (e) scene 5

Fig. 6. Comparison of images reconstructed by different algorithms in different scenes