opencv中WLS滤波器的使用python
时间: 2024-05-25 10:06:26 浏览: 356
python+opencv实现高斯平滑滤波
WLS滤波器是OpenCV中的一种滤波器,用于图像处理中的视差图滤波。下面是WLS滤波器的使用方法:
1.导入必要的库和模块
```python
import cv2
import numpy as np
```
2.读取左右视图的图像
```python
left = cv2.imread('left.png', 0)
right = cv2.imread('right.png', 0)
```
3.计算左右视图的视差图
```python
# 创建StereoBM实例
stereo = cv2.StereoBM_create(numDisparities=16, blockSize=15)
# 计算视差图
disparity = stereo.compute(left, right)
```
4.创建WLS滤波器实例
```python
# 创建WLS滤波器实例
wls_filter = cv2.ximgproc.createDisparityWLSFilter(stereo)
# 设置lambda和sigma参数
wls_filter.setLambda(8000)
wls_filter.setSigmaColor(1.5)
```
5.执行WLS滤波
```python
# 过滤视差图
filtered_disparity = wls_filter.filter(disparity, left, None, right)
```
6.显示结果
```python
# 显示结果
cv2.imshow('Filtered Disparity', filtered_disparity/16.0)
cv2.waitKey(0)
cv2.destroyAllWindows()
```
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