MGSA type computer generated holography for vision training with head-mounted display

結合MGSA型電腦全像技術及頭戴式顯示器技術之視力訓練系統

Pei-Jung Wu(吳佩蓉) ； Bor-Shyh Lin(林伯昰) ； Chien-Yue Chen(陳建宇)

《光學工程》 126期 (2014/09) Pp. 32-41

摘要

A computer generated holography head-mounted display (HMD) for vision training is proposed in this study. Based on modified Gerchberg-Saxton algorithm (MGSA) to calculate the phase distribution of light wave and the position multiplexing, the images with fixation disparity or changed disparity are successfully coded as phase only function. After decryption and reconstruction, the left and the right images are transmitted to HMD for a trainee viewing the images with disparity changes and moderating the stereoacuity of both eyes, ranging from 32.24 arcsec to 2.14 arcmin. The images reconstructed with MGSA-type CGH present the relative diffraction efficiency about 86% and visibility 94%, which not only provide high-contrast image quality, and the changing disparity allows achieving the training effect.

關鍵字

computer generated holography ； stereo vision ； head-mounted display

並列摘要

運用電腦全像技術結合穿戴式顯示技術將可完成一新型視力訓練系統。此系統運用MGSA演算法計算可調變視差之立體影像相位資訊，其不同深度資訊之立體影像可經由解密及重建作，並由頭戴式顯示器撥放其內容。當使用者配戴此頭戴式顯示器時，可觀賞到32.24 arcsec至2.14 arcmin不同視差的立體影像，故我們將此研究成果應用於視力訓練，藉由觀看可調變的立體影像可使眼球進行眼調節及輻奏訓練，輕易達成視力訓練之目的。此系統之立體影像具有高影像品質，其繞射效率為86%、影像能見度為94%。

並列關鍵字

電腦全像技術 ； 立體影像 ； 穿戴式顯示技術