Color-based tracking in Drone Programming - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to initialize the camera for color tracking.

Drone Programming

camera = DroneCamera([1]=True)

Drag options to blanks, or click blank then click option'

Athermal_vision

Bnight_mode

Ccolor_tracking

Dauto_focus

Attempts:

3 left

💡 Hint

Common Mistakes

Using night_mode instead of color_tracking disables color detection.

The camera must be set to color_tracking mode to detect colors for tracking.

2fill in blank

medium

Complete the code to set the target color for tracking.

Drone Programming

tracker.set_target_color([1])

Drag options to blanks, or click blank then click option'

A'blue'

B'red'

C'ultraviolet'

D'infrared'

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'infrared' or 'ultraviolet' which are not visible colors.

The target color must be a visible color like 'red' for the tracker to follow.

3fill in blank

hard

Fix the error in the code to correctly start the color tracking process.

Drone Programming

drone.[1]()

Drag options to blanks, or click blank then click option'

Astart_tracking

Bbegin_tracking

Cinitiate_follow

Dtrack_color

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'begin_tracking' or 'track_color' which are not valid methods.

The correct method to start tracking is start_tracking().

4fill in blank

hard

Fill both blanks to create a dictionary that maps detected colors to drone commands.

Drone Programming

commands = { [1]: 'move_left', [2]: 'move_right' }

Drag options to blanks, or click blank then click option'

A'red'

B'green'

C'blue'

D'yellow'

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping colors or using colors not in the options.

The dictionary maps 'red' to 'move_left' and 'blue' to 'move_right'.

5fill in blank

hard

Fill all three blanks to filter detected colors and execute commands only if confidence is high.

Drone Programming

if detected_color == [1] and confidence [2] [3]:
    execute_command(commands[detected_color])

Drag options to blanks, or click blank then click option'

A'red'

B>

C0.8

D'green'

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong color or comparison operator, or missing the confidence threshold.

The code checks if the detected color is 'red' and confidence is greater than 0.8 before executing the command.