openmv梯形校正的具体代码
时间: 2024-06-19 13:03:55 浏览: 145
OpenMV梯形校正是一种常见的图像处理技术,用于将倾斜的图像转换为水平或垂直方向。以下是OpenMV梯形校正的具体代码:
```
import sensor, image
# 设置摄像头分辨率
sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QVGA)
sensor.skip_frames(time = 2000)
# 设置梯形校正区域
def set_ROI():
ROI = [(80, 50), (240, 50), (320, 120), (0, 120)]
sensor.set_windowing((320, 240))
img = sensor.snapshot()
img.draw_polygon(ROI, fill = False)
while not button_b.is_pressed():
if button_a.is_pressed():
for i in range(len(ROI)):
ROI[i] = (ROI[i] + (button_c.get_presses() - button_c.get_presses()), ROI[i])
img.draw_polygon(ROI, fill = False)
print(ROI)
time.sleep(100)
sensor.set_windowing((320, 240))
return ROI
# 梯形校正
def trapezoidal_correction(img, roi):
dst = [(0, 0), (320, 0), (320, 240), (0, 240)]
src = roi
return img.transform(from_corners=src, to_corners=dst)
# 主程序
roi = set_ROI()
while True:
img = sensor.snapshot()
img = trapezoidal_correction(img, roi)
img = img.mean_pool(2)
# do something...
```
这段代码主要实现了设置梯形校正区域、梯形校正以及处理校正后的图像等功能。在代码中,通过设置ROI来确定梯形校正区域,然后调用trapezoidal_correction函数进行梯形校正。最后,可以在处理校正后的图像上进行其它操作。
阅读全文