基于Python写一个利用oppenart mini实现逆透视的代码
时间: 2024-02-06 20:13:00 浏览: 173
以下是基于Python编写的使用OpenCV实现逆透视的代码:
```
import cv2
import numpy as np
# 定义透视变换函数
def perspective_transform(image):
# 定义原图中矩形四个点的坐标
src_points = np.float32([[0, 0], [0, image.shape[0] - 1], [image.shape[1] - 1, 0], [image.shape[1] - 1, image.shape[0] - 1]])
# 定义逆透视后矩形四个点的坐标
dst_points = np.float32([[0, 0], [0, image.shape[0] - 1], [image.shape[1] - 1, 0], [image.shape[1] - 1, image.shape[0] - 1]])
# 计算透视变换矩阵
M = cv2.getPerspectiveTransform(src_points, dst_points)
# 应用透视变换
result = cv2.warpPerspective(image, M, (image.shape[1], image.shape[0]))
return result
# 读取图片
image = cv2.imread('input.png')
# 转换成灰度图
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
# 进行二值化处理
ret, thresh = cv2.threshold(gray, 0, 255, cv2.THRESH_BINARY_INV + cv2.THRESH_OTSU)
# 进行形态学变换,去掉噪点
kernel = np.ones((3, 3), np.uint8)
opening = cv2.morphologyEx(thresh, cv2.MORPH_OPEN, kernel, iterations=2)
# 寻找轮廓
contours, hierarchy = cv2.findContours(opening, cv2.RETR_TREE, cv2.CHAIN_APPROX_SIMPLE)
# 寻找最大轮廓
max_contour = max(contours, key=cv2.contourArea)
# 进行透视变换
result = perspective_transform(image)
# 显示结果
cv2.imshow('Result', result)
cv2.waitKey(0)
```
请注意,这个代码是基于OpenCV库写的,而不是OpenART mini。如果你想要使用OpenART mini实现透视变换,你需要查看OpenART mini的文档,找到对应的API。
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