Fig. 1. Adjustable ray to optical-wave conversion to generate CGH of volume data.

Fig. 2. (a) The process of sampling. (b) The process of adjustment.

Fig. 3. Flow chart of the proposed method.

Fig. 4. Optical reconstruction system.

Fig. 5. Time trend of the proposed method; M and N represent the width and height of CGH, respectively.

Fig. 6. Depth information experiment. (a) Reconstructed image focusing on the front. (b) Reconstructed image focusing on the back of the object.

Fig. 7. Different view directions of the reconstructed object (lateral size of display: 2 cm × 2 cm).

Fig. 8. Adjustable reconstructed content (lateral size of display: 2 cm × 2 cm) of the same object. (a) Different concern regions in the human skull under different transfer functions TF_skull1, TF_skull2, and TF_skull3. (b) Different concern regions in the human foot under different transfer functions TF_foot1, TF_foot2, and TF_foot3.