7x7模板的Zernike矩亚像素检测的python代码
时间: 2023-11-13 10:40:13 浏览: 134
以下是一个使用OpenCV和NumPy库实现的7x7模板的Zernike矩亚像素检测的Python代码示例:
```python
import cv2
import numpy as np
def zernike_moment(image, radius, theta):
height, width = image.shape[:2]
center_x, center_y = width // 2, height // 2
polar_image = cv2.linearPolar(image, (center_x, center_y), radius, cv2.INTER_LINEAR + cv2.WARP_FILL_OUTLIERS)
zernike_moments = []
for n in range(8):
for m in range(-n, n+1, 2):
real_part = 0.0
imag_part = 0.0
for y in range(height):
for x in range(width):
rho, phi = cv2.cartToPolar(x - center_x, y - center_y)
if rho <= radius:
polar_phi = phi - theta
if polar_phi < 0:
polar_phi += 2 * np.pi
real_part += image[y, x] * np.cos(m * polar_phi) * (rho / radius) ** n
imag_part += image[y, x] * np.sin(m * polar_phi) * (rho / radius) ** n
zernike_moments.append((real_part, imag_part))
return zernike_moments
# 加载图像
image = cv2.imread("image.jpg", cv2.IMREAD_GRAYSCALE)
# 将图像调整为7x7大小
image = cv2.resize(image, (7, 7))
# 计算Zernike矩亚像素
zernike_moments = zernike_moment(image, radius=3, theta=0)
# 输出结果
for i, (real_part, imag_part) in enumerate(zernike_moments):
zernike_moment_value = np.sqrt(real_part**2 + imag_part**2)
print(f"Zernike Moment {i+1}: {zernike_moment_value}")
```
请注意,上述代码仅为示例,实际应用中可能需要根据具体需求进行修改。另外,为了运行此代码,还需要安装OpenCV和NumPy库。
相关推荐
![zip](https://img-home.csdnimg.cn/images/20210720083736.png)
![zip](https://img-home.csdnimg.cn/images/20210720083736.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)