眼底视网膜病变是大部分眼科疾病的来源。光学相干层析成像(OCT)具有无创性、成像安全快速等特点,在临床上被广泛用于眼科疾病的诊断。针对OCT视网膜三维图像因抖动产生的扭曲变形问题,提出一种基于曲线拟合的OCT视网膜三维重建图像去抖动方法,即通过预处理提取OCT视网膜图像的边界,再利用最小二乘法曲线拟合来计算各帧切片图像的偏移量。结果表明:所提方法对OCT视网膜三维重建图像扭曲变形具有明显的校正作用。

Fundus retinopathy is the cause of most ophthalmic diseases. Optical coherence tomography (OCT) has been widely used in the diagnosis of ophthalmic diseases because of its non-invasive and rapid imaging features. In this paper, a dither removing method is proposed for three-dimensional OCT retinal image based on curve fitting. The OCT retina image boundary is extracted by preprocessing, and the offset of each frame slice image is calculated by least squares curve fitting. The results show that the proposed method has a significant correction effect on the distortion of the OCT retina three-dimensional reconstructed images.