Fig. 1. Computational II. (a) Pickup. (b) Reconstruction.

Fig. 2. Ray diagram between the object point and the elemental image.

Fig. 3. Principle of computational reconstruction in the proposed method.

Fig. 4. (a) The framework with a computational pickup and a CIIR process using a 2D plane image. (b) Ten test images. (c) Graph of the averaged PSNR values.

Fig. 5. (a) Experimental condition. (b) The recorded elemental images. (c) Enlarged “car1” image among elemental images.

Fig. 6. Reconstructed image at z=350  mm where the “car1” object was originally located. (a) k=3 case with the best visual quality. (b) k=100 case (original CIIR method). (c) k=1 case (subpixel-based CIIR method).

Fig. 7. Reconstructed image at z=430  mm where the “car2” object was originally located. (a) k=3 case with best visual quality. (b) k=100 case (original CIIR method). (c) k=1 case (subpixel-based CIIR method).