openmv巡绿白线代码

OpenMV是一款基于MicroPython的开源视觉传感器平台，主要用于简化机器视觉应用的开发。如果你想用OpenMV编写巡检绿色白线的代码，通常涉及到图像处理和边缘检测。以下是一个简单的示例，假设你正在使用OpenMV Cam M7：

import sensor, image, time

# 初始化传感器
sensor.reset() # Reset and initialize the camera
sensor.set_pixformat(sensor.RGB565) # Set pixel format to RGB565 (for faster speed)
sensor.set_framesize(sensor.QVGA) # Set frame size to QVGA (320x240)

# 白色线过滤函数
def find_white_lines(frame):
    gray = frame.copy().gray() # Convert to grayscale for better edge detection
    edges = gray.edges(threshold=128) # Apply threshold to detect edges
    lines = edges.hough_lines_p(radius=5, threshold=30, min_line_length=50, max_line_gap=10) # Perform Hough transform for line detection
    return lines

while True:
    img = sensor.snapshot() # Capture a frame
    lines = find_white_lines(img) # Detect white lines
    if lines:
        for line in lines:
            x1, y1, x2, y2 = line[0]
            img.draw.line((x1, y1, x2, y2), color=(0, 255, 0), thickness=2) # Draw detected lines in green
    img.show() # Display the processed image with detected lines
    time.sleep_ms(100) # Wait for some time before capturing next frame

在这个例子中，我们首先将图片转换为灰度模式，然后利用霍夫变换检测边缘，并找出可能是白色线条的部分。然后在原图上画出这些绿色线条。