乒乓球测距(K210)
测距
- 说明
识别的物体是乒乓球(规格应该是统一的吧), 硬件是K210,测距的函数经过拟合,在50cm范围内是准确的
如果使用起来不准确,可以打印代码中的LM, 然后去测数据,自己再拟合一个函数,代替调代码中的length = 1371.96686*Lm**(-1.06218)
- 代码
import sensor
import image
import lcd
import time
lcd.init()
sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QVGA)
sensor.set_auto_whitebal(False)
sensor.set_hmirror(False)
sensor.run(1)
threshold = (49, 79, 21, 91, -78, 89)
font_color=(255, 0, 0)
while True:
img=sensor.snapshot()
blobs = img.find_blobs([threshold])
max_pix = 0
count = -1
max_i = -1
if blobs:
for ele in blobs:
count += 1
if ele[4] > max_pix:
max_pix = ele[4]
local_i = count
if local_i >= 0:
b = blobs[local_i]
Lm = (b[2]+b[3])/2
#print("LM:", Lm) # 测量
length = 1371.96686*Lm**(-1.06218)
print("length:", length)
tmp=img.draw_rectangle(b[0:4])
tmp=img.draw_cross(b[5], b[6])
c=img.get_pixel(b[5], b[6])
lcd.display(img)

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