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python中常用的图像分割算法有基于阈值的分割算法、基于边缘的分割算法和基于区域的分割算法。以下是使用这些算法的示例代码:1. 基
python中常用的图像分割算法有基于阈值的分割算法、基于边缘的分割算法和基于区域的分割算法。以下是使用这些算法的示例代码:
1. 基于阈值的分割算法(二值化):Python
import cv2
def threshold_segmentation(image, threshold):
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
_, binary = cv2.threshold(gray, threshold, 255, cv2.THRESH_BINARY)
return binary
image = cv2.imread('image.jpg')
threshold = 127
segmented_image = threshold_segmentation(image, threshold)
cv2.imshow('Segmented Image', segmented_image)
cv2.waiTKEy(0)
cv2.destroyAllwindows()
2. 基于边缘的分割算法(Canny边缘检测):python
import cv2
def edge_segmentation(image, min_threshold, max_threshold):
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
edges = cv2.Canny(gray, min_threshold, max_threshold)
return edges
image = cv2.imread('image.jpg')
min_threshold = 100
max_threshold = 200
segmented_image = edge_segmentation(image, min_threshold, max_threshold)
cv2.imshow('Segmented Image', segmented_image)
cv2.waitKey(0)
cv2.destroyAllWindows()
3. 基于区域的分割算法(Felzenszwalb算法):python
import cv2
import numpy as np
def region_segmentation(image, scale, min_size):
segments = cv2.ximgproc.segmentation.createGraphSegmentation()
segments.setSigma(0.5)
segments.setK(500)
segments.processImage(image)
result = segments.createSuperpixelMask()
return result
image = cv2.imread('image.jpg')
scale = 0.1
min_size = 100
segmented_image = region_segmentation(image, scale, min_size)
cv2.imshow('Segmented Image', segmented_image)
cv2.waitKey(0)
cv2.destroyAllWindows()
注意:以上示例代码中,image.jpg
是待分割的图像文件名,可以根据实际情况修改。同时,还需要安装OpenCV库,可以使用pip install opencv-python
命令进行安装。
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