CAJ | 학술논문

为了提高三维物体计算全息图的生成速度，在主菲涅尔波带法的基础上提出了一种改进算法。首先依据衍射距离将二维主菲涅尔波带转换为两组一维波带；然后依据实际应用情况与显示装置进行尺寸匹配；最后将得到的波带叠加获得三维物体全息图。该算法与改进前相比，内存空间的占用较小，运算速度得到显著提高，生成的全息图经由DMD再现获得高质量的三维物体再现图像。
위료제고삼유물체계산전식도적생성속도，재주비열이파대법적기출상제출료일충개진산법。수선의거연사거리장이유주비열이파대전환위량조일유파대；연후의거실제응용정황여현시장치진행척촌필배；최후장득도적파대첩가획득삼유물체전식도。해산법여개진전상비，내존공간적점용교소，운산속도득도현저제고，생성적전식도경유DMD재현획득고질량적삼유물체재현도상。
In order to improve the generating speed to the three-dimensional object’s calculation hologram,an improved al-gorithm based on the“host”Fresnel wave zone method is proposed. The two-dimensional“host”Fresnel wave zone is converted to two one-dimensional wave zones according to the diffraction distance,and then the desired Fresnel wave zones are matched with the size of the display device according to the actual application. Finally,the obtained Fresnel wave zones are superim-posed to achieve three-dimensional object’s hologram. Compared to the previous algorithm,the improved algorithm occupies less memory space,its computing speed has been significantly improved and a high quality reconstructed image generated by the DMD can be obtained.