Computational ghost imaging has been an interesting topic for the imaging research community. However, low resolution and quality of image have been a major problem inhibiting the application of computational ghost imaging technique. In this work, we develop a chromatic 64 64 LED array which provides high-speed structured illumination up to 2.5 MHz for computational ghost imaging. Importantly, rather than using regular Cartesian arrangement which is commonly used in a digital camera’s detection array, the LED chips on chromatic LED array we propose are arranged in a special way we refer to as basket-weave sampling. The experimental results demonstrate that our proposed arrangement outperforms Cartesian arrangement for storing high-frequency information of colored pictures, with averaged root mean squared error (RMSE) reduced by 4.6%. Meanwhile, considering the physical structure of the LED array, we propose a targeted interpolation algorithm for resulting images obtained from the experiment, and results show that our algorithm has lower averaged RMSE by 2% when compared to bilinear algorithm and by 6.4% when compared to bicubic algorithm.

对于影像研究界来说，计算重影成像一直是一个有趣的话题。然而，低分辨率和图像质量已经成为阻碍计算重影成像技术的应用的主要问题。在这项工作中，我们开发了64 64色LED彩色阵列，该阵列可提供高达2.5 MHz的高速结构照明，以进行计算重影成像。重要的是，不是使用通常在数码相机的检测阵列中使用的常规笛卡尔排列，我们建议的彩色LED阵列上的LED芯片以一种特殊的方式进行排列，我们称之为篮式采样。实验结果表明，我们提出的布置优于用于存储彩色图片高频信息的笛卡尔布置，平均均方根误差（RMSE）降低了4.6％。同时，