(opencv09)cv2.getStructuringElement()构造卷积核

(opencv09)cv2.getStructuringElement()构造卷积核

rectkernel = cv2.getStructuringElement(shape, ksize, anchor=None)

shape:

• Enumerator
  MORPH_RECT	矩形
  MORPH_CROSS	十字型
  MORPH_ELLIPSE	椭圆形

ksize:

• 指定形状(元组)

示例程序01

 rectKernel = cv2.getStructuringElement(cv2.MORPH_RECT, (6, 3))
 print(rectKernel, type(rectKernel))
 sqKernel = cv2.getStructuringElement(cv2.MORPH_RECT, (5, 5))
 print(sqKernel, type(sqKernel))

运行结果01

 [[1 1 1 1 1 1]
  [1 1 1 1 1 1]
  [1 1 1 1 1 1]] <class 'numpy.ndarray'>
 [[1 1 1 1 1]
  [1 1 1 1 1]
  [1 1 1 1 1]
  [1 1 1 1 1]
  [1 1 1 1 1]] <class 'numpy.ndarray'>

示例程序02

 sqKernel = cv2.getStructuringElement(cv2.MORPH_CROSS, (9, 5))
 print(sqKernel, type(sqKernel))
 sqKernel = cv2.getStructuringElement(cv2.MORPH_CROSS, (10, 6))
 print(sqKernel, type(sqKernel))

运行结果02

 [[0 0 0 0 1 0 0 0 0]
  [0 0 0 0 1 0 0 0 0]
  [1 1 1 1 1 1 1 1 1]
  [0 0 0 0 1 0 0 0 0]
  [0 0 0 0 1 0 0 0 0]] <class 'numpy.ndarray'>
 [[0 0 0 0 0 1 0 0 0 0]
  [0 0 0 0 0 1 0 0 0 0]
  [0 0 0 0 0 1 0 0 0 0]
  [1 1 1 1 1 1 1 1 1 1]
  [0 0 0 0 0 1 0 0 0 0]
  [0 0 0 0 0 1 0 0 0 0]] <class 'numpy.ndarray'>

双数话默认选后边那个,最好为奇数

示例程序03

 sqKernel = cv2.getStructuringElement(cv2.MORPH_ELLIPSE, (9, 5))
 print(sqKernel, type(sqKernel))

运行结果03

 [[0 0 0 0 1 0 0 0 0]
  [0 1 1 1 1 1 1 1 0]
  [1 1 1 1 1 1 1 1 1]
  [0 1 1 1 1 1 1 1 0]
  [0 0 0 0 1 0 0 0 0]] <class 'numpy.ndarray'>

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