Low quality of images is a critical problem that inhibits the application of computational ghost imaging (CGI) technology. Therefore, a special RGB (Red, Green, Blue) arrangement is designed for the chromatic light-emitting diode (LED) array of the CGI system in this study. First, a 64×64 chromatic LED array is independently developed to provide structural lighting for the CGI system. Then, the chips on the LED array are arranged according to a designed basket-weave arrangement. Finally, considering the physical structure of the chromatic LED array, an interpolation algorithm is proposed for sampled images. Experiment results show that the root mean square error (RMSE) of the basket-weave sampling is reduced by 4.6%, compared with Cartesian sampling and it has better performance in storing high-frequency information of chromatic images. In addition, compared with the bilinear and bicubic interpolation algorithms, the average RMSE of the algorithm is reduced by 2.0% and 6.4%, respectively.