def medianBlur(image,winSize): # 图像的高、宽 rows,cols = image.shape[:2] # 窗口的高、宽,均为奇数 winH,winW = winSize halfWinH = (winH-1)/2 halfWinW = (winW-2)/2 # 中值滤波后的输出图像 medianBlurImg = np.zeros(image.shape,image.dtype) for r in range(rows): for c in range(cols): # 判断边界 rTop = 0 if r-halfWinH<0 else r-halfWinH rBottom = rows-1 if r+halfWinH > rows-1 else r+halfWinH cLeft = 0 if c-halfWinW < 0 else c-halfWinW cRight = cols-1 if c+halfWinW > cols-1 else c+halfWinW print(rTop,rBottom,cLeft,cRight) # 取邻域 region = image[rTop:rBottom,cLeft:int(cRight)] # 求中值 medianBlurImg[r][c] = np.median(region) return medianBlurImg。出现错误:TypeError: slice indices must be integers or None or have an index method
时间: 2024-02-14 16:20:43 浏览: 173
看起来是在取邻域时出现了问题。错误提示中说“slice indices must be integers or None or have an index method”,也就是说切片的索引必须是整数或者是 `None`,或者是具有 `__index__` 方法的对象。
在你的代码中,`cLeft` 和 `cRight` 的计算中出现了一个小错误。应该改为:
```python
cLeft = 0 if c-halfWinW < 0 else c-halfWinW
cRight = cols-1 if c+halfWinW > cols-1 else c+halfWinW+1 # 注意这里加 1
```
原因是切片操作是左闭右开区间,所以右边界要加 1。
另外,`halfWinH` 和 `halfWinW` 的计算也应该改为:
```python
halfWinH = (winH-1) // 2
halfWinW = (winW-1) // 2
```
这样可以保证窗口的大小为奇数。
修改后的代码如下:
```python
def medianBlur(image, winSize):
# 图像的高、宽
rows, cols = image.shape[:2]
# 窗口的高、宽,均为奇数
winH, winW = winSize
halfWinH = (winH-1) // 2
halfWinW = (winW-1) // 2
# 中值滤波后的输出图像
medianBlurImg = np.zeros(image.shape, image.dtype)
for r in range(rows):
for c in range(cols):
# 判断边界
rTop = 0 if r-halfWinH < 0 else r-halfWinH
rBottom = rows-1 if r+halfWinH > rows-1 else r+halfWinH
cLeft = 0 if c-halfWinW < 0 else c-halfWinW
cRight = cols-1 if c+halfWinW > cols-1 else c+halfWinW+1
# 取邻域
region = image[rTop:rBottom, cLeft:cRight]
# 求中值
medianBlurImg[r][c] = np.median(region)
return medianBlurImg
```
希望这个答案能够帮到你!
阅读全文