Fig. 1. Structure of the chromatic LED illumination module. (a) Physical picture of the module; (b) basket-weave arrangement; (c) Cartesian arrangement

Fig. 2. Model of the chromatic LED array. (a) LED arranged in basket-weave arrangement when N=28; (b) improved Shepard interpolation algorithm

Fig. 3. CGI system based on chromatic LED array

Fig. 4. RMSE of reconstructed image with different sampling methods

Fig. 5. Images reconstructed with different sampling ways. (a) Original image; (b) basket-weave sampling; (c) Cartesian sampling

Fig. 6. RMSE of reconstructed image with different algorithms

Fig. 7. Images reconstructed by different algorithms. (a) Original image; (b)--(e) mosaic interpolation algorithm, bicubic interpolation algorithm, bilinear interpolation algorithm, our algorithm in basket-weave sampling; (f)--(i) mosaic interpolation algorithm, bicubic interpolation algorithm, bilinear interpolation algorithm, our algorithm in Cartesian sampling

Fig. 8. Real image reconstruction results of different algorithms. (a) Original image; (b)--(e) mosaic interpolation algorithm, bicubic interpolation algorithm, bilinear interpolation algorithm, our algorithm in basket-weave sampling; (f)--(i) mosaic interpolation algorithm, bicubic interpolation algorithm, bilinear interpolation algorithm, our algorithm in Cartesian sampling