python-opencv线性扫描
时间: 2023-11-27 09:48:25 浏览: 288
线性扫描是一种常见的图像处理算法,可以通过Python-OpenCV实现。具体步骤如下:
1.导入必要的库和读取图像
```python
import cv2
import numpy as np
img = cv2.imread('image.jpg', 0) # 读取灰度图像
```
2.定义线性扫描函数
```python
def linear_scan(img, threshold):
rows, cols = img.shape
for i in range(rows):
for j in range(cols):
if img[i][j] < threshold:
img[i][j] = 0
else:
img[i][j] = 255
return img
```
3.调用线性扫描函数并显示结果
```python
threshold = 128 # 阈值
result = linear_scan(img, threshold)
cv2.imshow('result', result)
cv2.waitKey(0)
cv2.destroyAllWindows()
```
以上代码实现了一个简单的线性扫描算法,将图像中小于阈值的像素点设为黑色,大于等于阈值的像素点设为白色。
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