CAJ | 학술논문

数字微镜器件(DMD)代替移动式机械模板作为空间光调制器是Hadamard变换光谱技术的最新发展方向。在实际的工程设计中，投射到DMD上的色散光谱无法被所构造的Hadamard编码模板完美地按照S矩阵进行编码，这一现象将会给光谱反演带来误差。文中提出了一种采用步进系数校正光谱图像的方法，根据像素点在图像上空间位置的不同，在其相应的S编码矩阵中引入一个步进系数进行校正，实验结果表明通过该方法反演得到的光谱图像逼近目标的真实光谱。
수자미경기건(DMD)대체이동식궤계모판작위공간광조제기시Hadamard변환광보기술적최신발전방향。재실제적공정설계중，투사도DMD상적색산광보무법피소구조적Hadamard편마모판완미지안조S구진진행편마，저일현상장회급광보반연대래오차。문중제출료일충채용보진계수교정광보도상적방법，근거상소점재도상상공간위치적불동，재기상응적S편마구진중인입일개보진계수진행교정，실험결과표명통과해방법반연득도적광보도상핍근목표적진실광보。
Digital micro mirror device(DMD) replacing the mobile mechanical template as the spatial light modulator is the new developmental direction of Hadamard transform spectroscopy. In the actual engineering design, the dispersed spectrum on Hadamard encoding mask cannot be encoded according to the S matrix perfectly, this phenomenon will bring errors to the spectral recovery. A method to correct the recovered spectral images with a series of stepping factors was proposed according to the different spatial positions of the pixels on the image. Different stepping factors were added to their corresponding encoding equations based on S-matrix. The experimental results show that the spectral images after correction are improved obviously.