基于改进分水岭算法的图像分割

为了改善经典分水岭算法的过分割问题,该文将图像中的噪声视为过分割的直接因素,针对人脑核磁共振图像提出了一种基于预处理的改进算法。首先应用数学形态学的开闭运算对图像进行滤波,再求取其梯度,然后依据内外标记对梯度图像进行修正,最后在修正后的梯度图像上实施分水岭变换。实验结果表明,该方法和传统分水岭算法相比较,能有效地抑制过分割。

Image Segmentation Based on Improved Watershed Algorithm

With regard to the over-segmentation of traditional watershed algorithm,an improved watershed algorithm based on pre-processing is proposed aiming to human brain MRI image.Noise is considered as direct factor of over-segmentation in this paper.Firstly,morphological opening operation and closing operation are used to denoise.Then,calculate the gradient image for the denoised image.Subsequencely,amend the gradient image according to inside and outside marks.Finally,implement watershed transformation on the am...