PROSAGA码农传奇-模式识别-如何使用python检测边缘后将图像裁剪成碎片

<div class =“post-text”itemprop =“text”>
  
    我的工作流程的开头与您的类似。第一步：模糊图像..
  
   <pre>
 <code>
 blurred = cv2.GaussianBlur(gray, (5, 5), 0) # Blur

</code>
 </pre>
  
    <a href="https://i.stack.imgur.com/Jb40P.png" rel="nofollow noreferrer">
      <img src =“https://i.stack.imgur.com/Jb40P.png”alt =“blur”/>
    </A>
    
第二步：获取精彩图片......
  
   <pre>
 <code>
 canny = cv2.Canny(blurred, 30, 150) # Canny

</code>
 </pre>
  
    <a href="https://i.stack.imgur.com/Ii3mA.png" rel="nofollow noreferrer">
      <img src =“https://i.stack.imgur.com/Ii3mA.png”alt =“canny”/>
    </A>
    
第三步：在canny图像上绘制轮廓。这会关闭撕裂的碎片。
  
   <pre>
 <code>
 # Find contours
_, contours, _ = cv2.findContours(canny,cv2.RETR_TREE,cv2.CHAIN_APPROX_SIMPLE)
# Draw contours on canny (this connects the contours
cv2.drawContours(canny, contours, -1, 255, 2)
canny = 255 - canny

</code>
 </pre>
  
    <a href="https://i.stack.imgur.com/yLSwr.png" rel="nofollow noreferrer">
      <img src =“https://i.stack.imgur.com/yLSwr.png”alt =“通过绘制轮廓关闭”/>
    </A>
    
第四步：填埋（洪水填充区域为灰色）
  
   <pre>
 <code>
 # Get mask for floodfill
h, w = thresh.shape[:2]
mask = np.zeros((h+2, w+2), np.uint8)
# Floodfill from point (0, 0)
cv2.floodFill(thresh, mask, (0,0), 123);

</code>
 </pre>
  
    <a href="https://i.stack.imgur.com/9B4NN.png" rel="nofollow noreferrer">
      <img src =“https://i.stack.imgur.com/9B4NN.png”alt =“floodfill”/>
    </A>
  
  
    第五步：摆脱真正的小而非常大的轮廓
  
   <pre>
 <code>
 # Create a blank image to draw on
res = np.zeros_like(src_img)
# Create a list for unconnected contours
unconnectedContours = []
for contour in contours:
 area = cv2.contourArea(contour)
 # If the contour is not really small, or really big
 if area > 123 and area < 760000:
 cv2.drawContours(res, [contour], 0, (255,255,255), cv2.FILLED)
 unconnectedContours.append(contour)

</code>
 </pre>
  
    <a href="https://i.stack.imgur.com/Ly1vI.png" rel="nofollow noreferrer">
      <img src =“https://i.stack.imgur.com/Ly1vI.png”alt =“不小的轮廓”/>
    </A>
  
  
    最后，一旦你分割了碎片，它们就可以嵌套了。
  
  
    <a href="https://i.stack.imgur.com/ZnJCT.gif" rel="nofollow noreferrer">
      <img src =“https://i.stack.imgur.com/ZnJCT.gif”alt =“在此处输入图片说明”/>
    </A>
  
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