在小球测距的时候，视野多出一个小球，如何保持测的是第一个小球

dn42

import sensor, image, time

For color tracking to work really well you should ideally be in a very, very,

very, controlled enviroment where the lighting is constant...

yellow_threshold = ( 56, 83, 5, 57, 63, 80)

You may need to tweak the above settings for tracking green things...

Select an area in the Framebuffer to copy the color settings.

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.
sensor.set_auto_whitebal(False) # turn this off.
clock = time.clock() # Tracks FPS.

K=5000#the value should be measured

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 len(blobs) == 1:
    # Draw a rect around the blob.
    b = blobs[0]
    img.draw_rectangle(b[0:4]) # rect
    img.draw_cross(b[5], b[6]) # cx, cy
    Lm = (b[2]+b[3])/2
    length = K/Lm
    print(length)

kidswong999

https://singtown.com/learn/49239/

程序里是追最大的色块，也就是最近的小球。