自适应斜Z字形采样Hadamard单像素成像

单像素成像技术在成像速度和质量上已经取得一定的进展,然而,如何在保证成像质量的前提下提升成像速度仍然是一个待解决的问题。对Hadamard系数矩阵中每条斜列上的系数绝对值求取平均值后,发现其具有迅速减小的特征,基于此发现提出了一种自适应斜Z字形采样方法,以实现预期的成像质量和速度提升。实验结果表明,该方法可以有效减少采样次数与数据采集量,兼顾成像质量的同时提升了成像速度。在相同的采样率下,其成像质量优于顺序采样的单像素成像。

Hadamard Single-pixel Imaging Using Adaptive Oblique Zigzag Sampling

Single-pixel imaging has made significant progress in imaging quality and speed.However,how to improve the imaging speed while ensuring the imaging quality is still a problem to be solved.Based on the finding that the average value of the absolute value of the Hadamard coefficients of each oblique line declines rapidly,an adaptive oblique zigzag sampling method is proposed to achieve the expected imaging speed and quality.Experimental results show that the number of sampling and the amount of data acquisition can be effectively reduced using the proposed method,improving the imaging speed while ensuring the imaging quality.Compared with the single-pixel imaging using sequential sampling,the imaging quality of the proposed method is better under the same sampling rate.