openmv在识别颜色后无法拍照并保存在sd卡中
-
import sensor, image, time,pyb yellow_threshold =(0, 100, -128, 127, 47, 21) RED_LED_PIN = 1 BLUE_LED_PIN = 3 sensor.reset() # Initialize the camera sensor. sensor.set_pixformat(sensor.RGB565) # use RGB565. sensor.set_framesize(sensor.QQVGA) # use QQVGA for speed. sensor.skip_frames(10) # Let new settings take affect. #红灯亮 pyb.LED(RED_LED_PIN).on() sensor.skip_frames(30) # Give the user time to get ready. #红灯灭,蓝灯亮 pyb.LED(RED_LED_PIN).off() pyb.LED(BLUE_LED_PIN).on() sensor.set_auto_whitebal(False) # turn this off. #关闭白平衡。白平衡是默认开启的,在颜色识别中,需要关闭白平衡。 clock = time.clock() # Tracks FPS. while(True): clock.tick() # Track elapsed milliseconds between snapshots(). img = sensor.snapshot() # Take a picture and return the image. blobs = img.find_blobs([yellow_threshold]) if blobs: #如果找到了目标颜色 for b in blobs: #迭代找到的目标颜色区域 # Draw a rect around the blob. img.draw_rectangle(b[0:4]) # rect #用矩形标记出目标颜色区域 img.draw_cross(b[5], b[6]) # cx, cy #在目标颜色区域的中心画十字形标记 print(b[5], b[6]) print("You're on camera!") sensor.snapshot().save("example.jpg") # or "example.bmp" (or others) pyb.LED(BLUE_LED_PIN).off() print("Done! Reset the camera to see the saved image.") print(clock.fps()) # Note: Your OpenMV Cam runs about half as fast while # connected to your computer. The FPS should increase once disconnected.
-
SD卡需要是FAT格式。最好买贵的,品牌的。