北京生物醫(yī)學(xué)工程

用于精神分裂癥檢測的眼動(dòng)儀研制

An eye tracker used for the detection of schizophrenia

作者：余羅皮喜田許帥劉洪英

單位：重慶大學(xué)生物工程學(xué)院(重慶400030)

關(guān)鍵詞：桌面式眼動(dòng)儀；瞳孔中心；普爾欽光斑中心；注視點(diǎn)標(biāo)定；眼動(dòng)軌跡

分類號：R318.06;TP391

出版年·卷·期（頁碼）：2016·35·6（639-644）

摘要：

目的為了輔助醫(yī)生診斷精神分裂癥患者，設(shè)計(jì)一種高精度桌面式眼動(dòng)儀。方法系統(tǒng)采用雙屏輸出，攝像機(jī)集成了紅外光源及紅外濾光鏡片。重點(diǎn)提出一種新的瞳孔中心識(shí)別算法，首先對預(yù)處理后的眼圖進(jìn)行瞳孔輪廓提取，然后采用最小二乘橢圓擬合法識(shí)別瞳孔中心。在此基礎(chǔ)上，對瞳孔周圍區(qū)域進(jìn)行邊緣檢測，得到的最大輪廓中心即為普爾欽光斑中心。最后基于非線性二階多項(xiàng)式擬合靜態(tài)標(biāo)定算法建立了眼圖坐標(biāo)系和場景坐標(biāo)系的映射方程，并完成了注視點(diǎn)標(biāo)定。結(jié)果實(shí)現(xiàn)了眼動(dòng)軌跡的實(shí)時(shí)顯示和凝視點(diǎn)數(shù)目的統(tǒng)計(jì)，測試有效率達(dá)到80%以上。結(jié)論系統(tǒng)能夠很好地跟蹤和顯示人眼運(yùn)動(dòng)，具有較好的實(shí)用性。

Objective In order to help doctors to diagnose schizophrenia patients, a desktop eye tracker with high-precision was designed in this paper. Methods The system used dual output, and the camera is integrated with infrared light source and infrared filter lens. A new recognition algorithm for pupil center was proposed. The pupil contour was extracted after preprocessing the imagine, then the pupil center is identified based on the least squares ellipse fitting algorithm. On this basis, the center of the largest contour that was achieved by edge detection around the pupil center was Purkinje spot. Finally, the static calibration algorithm of the nonlinear second-order polynomial fitting established the mapping equation between eye coordinate system and scene coordinate system, and the fixation point calibration was completed. Results The system realized the real-time display of the eye movement trajectory and the statistics of the fixation points, and the effective rate of the test was above 80%. Conclusions The eye tracker developed in this paper can track and display the human eye movement very well, and has good practicability.

參考文獻(xiàn)：

［1］Cheng JC, Li L. Effects of reference objects and extra-retinal information about pursuit eye movements on curvilinear path perception from retinal flow［J］. Journal of Vision, 2012, 12(3): 538-541.

［2］趙新燦, 左洪福, 任勇軍. 眼動(dòng)儀與視線跟蹤技術(shù)綜述［J］. 計(jì)算機(jī)工程與應(yīng)用, 2006, 42(12): 118-120.

Zhao Xincan, Zuo Hongfu, Ren Yongjun. A review of eye tracker and eye tracking techniques［J］. Computer Engineering and Applications, 2006, 42(12): 118-120.

［3］Franco JG, De PJ, Gaviria AM, et al. Smooth pursuit eye movements and schizophrenia: literature review［J］. Archivos De La Sociedad Espanola De Oftalmologia, 2014, 89(9): 361-367.

［4］Chen Z, Fu H, Lo WL, et al. Eye-tracking aided digital system for strabismus diagnosis［R］. Hong Kong:IEEE International Conference on Systems, Man, and Cybernetics, 2015.

［5］Neuhann IM, Lege BA, Bauer M, et al. Static and dynamic rotational eye tracking during LASIK treatment of myopic astigmatism with the Zyoptix laser platform and advanced control eye tracker［J］. Journal of Refractive Surgery, 2010, 26(1): 17-27.

［6］Sundstedt V. Gazing at Games: An Introduction to Eye Tracking Control［M］.Williston,US:Morgan & Claypool Publishers, 2012: 1-113.

［7］Armato A, Lanatà A, Scilingo EP. Comparitive study on photometric normalization algorithms for an innovative, robust and real-time eye gaze tracker［J］. Journal of Real-Time Image Processing, 2013, 8(1): 21-33.

［8］You JK, Lee EC, Kang RP. A robust gaze detection method by compensating for facial movements based on corneal specularities［J］. Pattern Recognition Letters, 2008, 29(10): 1474-1485.

［9］Zhang W, Chen H, Yao P, et al. Precise eye localization with AdaBoost and fast radial symmetry［J］. Lecture Notes in Computer Science, 2006, （1）: 725-730.

［10］Yu LH, Eizenman M. A new methodology for determining point-of-gaze in head-mounted eye tracking systems［J］. IEEE Transactions on Biomedical Engineering, 2004, 51(10): 1765-1773.

［11］趙玲, 趙攸文, 劉玉玲. 65例抑郁癥患者的眼動(dòng)檢測分析［J］. 中國實(shí)用醫(yī)藥, 2009, 4(6): 101-102.

［12］陳學(xué)軍, 楊永明, 何為,等. 一種應(yīng)用于視頻眼震分析的瞳孔中心定位方法［J］. 中國生物醫(yī)學(xué)工程學(xué)報(bào), 2012, 31(2): 184-189.

Chen Xuejun, Yang Yongming, He Wei, et al.A pupil location method used for video-nystagmograph［J］. Chinese Journal of Biomedical Engineering, 2012, 31(2): 184-189.

［13］Delerue C, Hayhoe M, Boucart M. Eye movements during natural actions in patients with schizophrenia［J］. Journal of Psychiatry & Neuroscience, 2013, 38(5): 317-324.

［14］Miura K, Hashimoto R, Fujimoto M, et al. An integrated eye movement score as a neurophysiological marker of schizophrenia［J］. Schizophrenia Research, 2014, 160(1-3): 228-229.

［15］Dowiasch S, Backasch B, Einhuser W, et al. Eye movements of patients with schizophrenia in a natural environment［J］. European Archives of Psychiatry & Clinical Neuroscience, 2014, 42(5): 1-12.

服務(wù)與反饋：

【文章下載】【加入收藏】

提示：您還未登錄，請登錄！點(diǎn)此登錄

51黑料吃瓜在线观看,51黑料官网|51黑料捷克街头搭讪_51黑料入口最新视频