帮我用写一个openmv的色块识别算法
时间: 2024-05-15 16:13:55 浏览: 96
好的,以下是一个简单的OpenMV色块识别示例代码:
```python
import sensor, image, time
# 初始化摄像头
sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QVGA)
sensor.skip_frames(time = 2000)
# 颜色阈值(以RGB565格式为准)
red_threshold = (30, 100, 15, 80, -20, 70)
green_threshold = (15, 50, -30, -10, 15, 50)
blue_threshold = (-20, 0, -70, -30, 20, 50)
# 循环识别
while(True):
# 获取图像
img = sensor.snapshot()
# 找到红色色块
blobs = img.find_blobs([red_threshold], pixels_threshold=200, area_threshold=200)
if len(blobs) > 0:
for b in blobs:
img.draw_rectangle(b.rect())
img.draw_cross(b.cx(), b.cy())
# 找到绿色色块
blobs = img.find_blobs([green_threshold], pixels_threshold=200, area_threshold=200)
if len(blobs) > 0:
for b in blobs:
img.draw_rectangle(b.rect())
img.draw_cross(b.cx(), b.cy())
# 找到蓝色色块
blobs = img.find_blobs([blue_threshold], pixels_threshold=200, area_threshold=200)
if len(blobs) > 0:
for b in blobs:
img.draw_rectangle(b.rect())
img.draw_cross(b.cx(), b.cy())
# 显示图像
img.draw_string(0, 0, "Press Ctrl-C to stop.", color=(255, 0, 0))
img.show()
```
以上代码通过使用`find_blobs()`函数找到图像中的红色、绿色和蓝色色块,然后在色块周围绘制矩形和十字叉标记。您可以根据需要更改阈值和其他参数。
请注意,此示例代码仅供参考,您可能需要进行更多的调整和优化以适应您的具体应用场景。
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