Fig. 1. Label-free digital cell imager Biophase. (a) Light source; (b) condenser lens; (c) sample platform; (d) electric platform controller; (e) Phaseview device

Fig. 2. The phase distributions of polystyrene microspheres with a diameter of 70 μm. (a) Phase distribution of 70 μm spheres in NaCl solution diluted 2 times; (b) phase distribution of 70 μm spheres in NaCl solution diluted 5 times;(c) phase distribution of 70 μm spheres in NaCl solution diluted 10 times

Fig. 3. Morphology and phase distribution of red blood cell. (a) Erythrocyte phase profile; (b) thickness map decoupled by dual-wavelength method

Fig. 4. Partial phase data from the red blood cell test set

Fig. 5. Structural diagrams. (a) Residual module; (b) dense connection modules

Fig. 6. Network structure of attention mechanism in DARU-Net model

Fig. 7. Network structure diagram of DARU-Net model

Fig. 8. Loss value during training. (a) Loss value curve of polystyrene microsphere training set; (b) loss value curve for the polystyrene microsphere test set

Fig. 9. Separation results of polystyrene microsphere thickness and refractive index. (a) Thickness distribution predicted by the model; (b) comparison of the axial distribution of the predicted thickness with label value; (c) axial refractive index distribution

Fig. 10. Separation results of red blood cell thickness and refractive index. (a) Thickness prediction of red blood cell by the model; (b) comparison of reconstructed axial thickness curves of red blood cell; (c) refractive index axial distribution of red blood cell