Return to Video

06-15 Is Localization Necessary Solution

  • 0:00 - 0:02
    The answer is yes.
  • 0:02 - 0:06
    In nearly all cases of mapping, we have robot uncertainty in motion.
  • 0:06 - 0:08
    That uncertainty might grow over time.
  • 0:08 - 0:12
    We need to address this; otherwise the map looks really bad.
  • 0:12 - 0:14
    Let me give an example .
  • 0:14 - 0:18
    Suppose a robot drives down a corridor, and it senses surrounding walls.
  • 0:18 - 0:23
    If this robot has a drift problem and because of uncertainty it its motion,
  • 0:23 - 0:26
    it actually believes it drives a trajectory like this.
  • 0:26 - 0:29
    Then the surrounding map would look very much like that.
  • 0:29 - 0:33
    Now, these might be indistinguishable at first glance,
  • 0:33 - 0:35
    but if this robot ever comes back to the same place,
  • 0:35 - 0:38
    then it has an opportunity to correct all this.
  • 0:38 - 0:43
    A good SLAM technique is able to understand not just the fact that the environment
  • 0:43 - 0:48
    is uncertain but also the robot itself runs on an uncertain trajectory.
  • 0:48 -
    That makes it hard.
Title:
06-15 Is Localization Necessary Solution
Description:

Other units in this course below:
Unit 1: http://www.youtube.com/playlist?list=PL1EF620FCB11312A6
Unit 2: http://www.youtube.com/playlist?list=PL107FD47786234011
Unit 3: http://www.youtube.com/playlist?list=PL5493E5D24A081719
Unit 4: http://www.youtube.com/playlist?list=PLAADAB4F235FE8D65
Unit 5: http://www.youtube.com/playlist?list=PL1B9983ACF22B1920
Unit 6: http://www.youtube.com/playlist?list=PLC9ED5AC39694C141
QA: http://www.youtube.com/playlist?list=PL3475310BFB1CBE34

To gain access to interactive quizzes, homework, programming assignments and a helpful community, join the class at http://www.udacity.com

more » « less
Video Language:
English
Team:
Udacity
Project:
CS373 - Artificial Intelligence
Duration:
0:51
Amara Bot added a translation

English subtitles

Revisions