Three-dimensional Reconstruction of Retinal Vessels Based on Binocular Vision
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摘要: 在机器人辅助眼科手术，如视网膜血管搭桥术中，需要对操作点进行精准的定位。该研究提出一种基于双目视觉的眼底血管三维重建方法，用于定位视网膜血管上的手术操作点。通过对比度受限的直方图均衡算法提取图像中的血管以进行立体匹配，同时去除周围背景对立体匹配的影响。最后利用双目视觉中的视差原理，完成对眼底视网膜血管图像的三维重建。经过实验验证，该方法能以较高的精度定位视网膜血管上的手术操作点，满足眼科手术对于定位的要求。Abstract: In robot-assisted eye surgery, such as retinal vascular bypass surgery, precise positioning of operating points is required. In this study, a binocular vision-based 3D reconstruction method is proposed to locate the incision points on retinal vessels. Vessels in the image were extracted by CLAHE algorithm to remove the influence of background, then stereo matching was performed. Finally, the retinal vessel image was reconstructed by using the principle of parallax in binocular vision. Experimental results show that this method can accurately locate the incision points on retinal vessels and meet the requirements of ophthalmic surgery.
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