<caption><image_132>The image shows a man standing in front of a green chalkboard with white chalk writing on it. The man is wearing a blue t-shirt and appears to be writing on the chalkboard. The chalkboard is filled with various mathematical equations and formulas written in white chalk. The equations are written in different fonts and sizes, and the formulas are arranged in a neat and orderly manner. The background of the image is a classroom or lecture hall, and there is a whiteboard visible in the background.</caption><transcript><audio_133>easy to find features so some examples you could use what are called retro</transcript><caption><image_134>The image shows a man standing in front of a green chalkboard with white chalk writing on it. The man is wearing a blue t-shirt and appears to be giving a presentation or lecture. He is standing with his hands gesturing with his mouth open and is looking directly at the camera. The writing on the chalkboard is in black marker and is written in white chalk. The background of the image is a plain white wall.</caption><transcript><audio_135>um some of these could be designed to work in the infrared spectrum so that they don't interfere with visible light so that humans tend not to notice them and there's not a kind of interference that may cause other troubles so um so that's</transcript><caption><image_136>The image shows a man standing in front of a green chalkboard. He is wearing a blue t-shirt and appears to be writing on the chalkboard with a marker. On the left side of the image, there is a list of features written in white chalk. The features listed include:

1. Natural features
2. Extract & maintain from:
3. Remove moving objects
4. Reliability low
5. Artificial features
6. Initial complete:
7. OR tags
8. Objective marks:
9. AR.

The image appears to have been taken in a classroom or a classroom setting, as there are whiteboards and a projector screen visible in the background.</caption><transcript><audio_137>the choice you have you have ir versus</transcript><transcript><audio_138>right so so that's the idea either you go the hard way or you go the easy way when you go the easy way for artificial features you end up with a more controlled environment and you can guarantee much more robust performance</transcript><transcript><audio_139>right it works in a larger variety of settings and with much higher accuracy so that's one thing that we went with at oculus on that stage for dk2 because of this high level of reliability and accuracy it was better than trying to make the computer vision</transcript><transcript><audio_140>the most impressive computer vision ever for example right so with a high level of robustness this was very very hard to achieve that it would be more impressive if any of you can find a solution that works with natural features and has the same level of accuracy and</transcript> easy to find features so some examples you could use what are called retro um some of these could be designed to work in the infrared spectrum so that they don't interfere with visible light so that humans tend not to notice them and there's not a kind of interference that may cause other troubles so um so that's the choice you have you have ir versus right so so that's the idea either you go the hard way or you go the easy way when you go the easy way for artificial features you end up with a more controlled environment and you can guarantee much more robust performance right it works in a larger variety of settings and with much higher accuracy so that's one thing that we went with at oculus on that stage for dk2 because of this high level of reliability and accuracy it was better than trying to make the computer vision the most impressive computer vision ever for example right so with a high level of robustness this was very very hard to achieve that it would be more impressive if any of you can find a solution that works with natural features and has the same level of accuracy and
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