Practical work Camera programming

EDUCATION IN ARTIFICIAL INTELLIGENCE

CAMERA PROGRAMMING

INTRODUCTION

KNOWLEDGE REQUIREMENTS → o o

𝑤ℎ𝑖𝑙𝑒

→

MATERIALS → → →

𝑖𝑓/𝑒𝑙𝑖𝑓/𝑒𝑙𝑠𝑒

HANDLING THE ROBOT Testing the alphai library to control the robot alphai.py

pip install alphai-api

from alphai import *

alphai motor(30, -30, 5)

alphai motor(30, -30, 5)

motor(left, right, duration) duration

left

right

motor alphai

Connecting to the AlphAI robot → → →

connect_bluetooth(n) disconnect()

from alphai import * connect_bluetooth(n) motor(30, -30, 5) disconnect()

connect_wifi()

NAVIGATION WITH ULTRA SOUND Discovery of the ultra-sound sensor get_distance() set_distance(True)

None

connect_bluetooth(n) set_distance(True) # activate the ultrasound sensor while True: d = get_distance() # get the distance measured by the sensor print("distance:", d)

Autonomous movement with ultra-sound get_distance()

ultrasound_race()

NAVIGATION WITH THE CAMERA

Discovering the camera image bluetooth_connect(n)

set_camera("8x6") List[List[List[int]]]

get_camera() image

image[i, j, k]

bluetooth_connect(n) set_camera("8x6") # set the camera to the correct resolution while True: image = get_camera() # get the camera image print('red', image[0, 7, 0], 'green', image[0, 7, 1], 'blue', image[0, 7, 2])

First autonomous movement with the camera

camera_race()

image[4, 3, 0] < 100 →

image[4, 3, 1]

<

100 →

Autonomous robot improvements and racing

→

Appendix: alphai library API

𝑑𝑒𝑓 𝑏𝑙𝑢𝑒𝑡𝑜𝑜𝑡ℎ_𝑙𝑖𝑠𝑡() → 𝑙𝑖𝑠𝑡 𝑑𝑒𝑓 𝑐𝑜𝑛𝑛𝑒𝑐𝑡_𝑏𝑙𝑢𝑒𝑡𝑜𝑜𝑡ℎ(𝑟𝑜𝑏𝑜𝑡_𝑛𝑢𝑚𝑒𝑟: 𝑖𝑛𝑡) → 𝑏𝑜𝑜𝑙

𝑑𝑒𝑓 𝑐𝑜𝑛𝑛𝑒𝑐𝑡_𝑤𝑖𝑓𝑖() → 𝑏𝑜𝑜𝑙

𝑑𝑒𝑓 𝑑𝑖𝑠𝑐𝑜𝑛𝑛𝑒𝑐𝑡() 𝑑𝑒𝑓 𝑖𝑠_𝑐𝑜𝑛𝑛𝑒𝑐𝑡𝑒𝑑() → 𝑏𝑜𝑜𝑙 𝑑𝑒𝑓 𝑚𝑜𝑡𝑜𝑟(𝑙𝑒𝑓𝑡, 𝑟𝑖𝑔ℎ𝑡, 𝑑𝑢𝑟𝑎𝑡𝑖𝑜𝑛) duration 𝑑𝑒𝑓 𝑤𝑎𝑖𝑡_𝑓𝑜𝑟_𝑘𝑒𝑦() → 𝑙𝑖𝑠𝑡

𝑑𝑒𝑓 𝑔𝑒𝑡_𝑏𝑙𝑜𝑐𝑘𝑎𝑑𝑒() → 𝑏𝑜𝑜𝑙 𝑑𝑒𝑓 𝑠𝑒𝑡_𝑑𝑖𝑠𝑡𝑎𝑛𝑐𝑒(𝑐𝑜𝑛𝑓𝑖𝑔: 𝑏𝑜𝑜𝑙) 𝑑𝑒𝑓 𝑔𝑒𝑡_𝑑𝑖𝑠𝑡𝑎𝑛𝑐𝑒() → 𝑓𝑙𝑜𝑎𝑡 𝑑𝑒𝑓 𝑠𝑒𝑡_𝑐𝑎𝑚𝑒𝑟𝑎(𝑐𝑜𝑛𝑓𝑖𝑔: 𝑠𝑡𝑟) config

2x1 4x3

8x6 16x12 21x16 32x24 64x48 𝑑𝑒𝑓 𝑔𝑒𝑡_𝑐𝑎𝑚𝑒𝑟𝑎() → 𝑙𝑖𝑠𝑡 𝑑𝑒𝑓 𝑠𝑒𝑡_𝑖𝑟(𝑚𝑜𝑑𝑒) None all std

mean

𝑑𝑒𝑓 𝑔𝑒𝑡_𝑖𝑛𝑓𝑟𝑎𝑟𝑒𝑑() → 𝑙𝑖𝑠𝑡

As you will have noticed, the