Group 4_Tile Pop — Transcript

Full transcript

1. 0:00Hi everyone. We are group four. Today
2. 0:02we're presenting TilePop, Tile Type
3. 0:04Pop-up Prop for Virtual Reality by Tung
4. 0:07and colleagues, published at UIST 2019.
5. 0:11It has been cited 78 times.
6. 0:14So what is TilePop?
7. 0:15It is a floor made of square tiles and
8. 0:18inside each tile are folded airbags
9. 0:20stacked on top of each other. When
10. 0:22something happens in the VR game, the
11. 0:24right tiles inflate and pop up into real
12. 0:26shapes like a chair, a block, or even a
13. 0:29boat.
14. 0:30These shapes are strong enough to hold
15. 0:32your whole body so you can actually sit,
16. 0:35lean, or climb on them. When you're
17. 0:37done, the airbags deflate and fold back
18. 0:39flat so you can walk on the floor again.
19. 0:43The paper starts from a simple idea.
20. 0:45The shapes around us tell our bodies
21. 0:47what to do. A ledge invites you to sit,
22. 0:50a wall invites you to lean, a stab
23. 0:52invites you to climb. But in VR, most
24. 0:55haptic devices only work on your hands
25. 0:57and fingertips. You can feel an object
26. 0:59in your palm, but nothing supports your
27. 1:01body. At the same time, earlier studies
28. 1:04showed that real props placed in the
29. 1:06room make VR feel much more real.
30. 1:10So why did the authors build TilePop?
31. 1:13Existing whole body props have two
32. 1:15problems. Some are fixed like blocks and
33. 1:18boards that must be set up before you
34. 1:19start. Others have to be moved by people
35. 1:23like in Turk Deck,
36. 1:24which is slow and needs extra helpers.
37. 1:27Nothing could change shape by itself at
38. 1:29the size of a full body.
39. 1:31Air-filled interfaces are easy to
40. 1:33inflate and fold away. So the authors
41. 1:36asked, could floor tiles create
42. 1:38body-sized shapes on demand?
43. 1:41The paper makes five contributions.
44. 1:43First, the concept, a grid of stacked
45. 1:46cube airbags hidden inside floor tiles.
46. 1:49Second, the fabrication, a special
47. 1:51folding structure and strong two-layer
48. 1:53materials so each airbag can hold a
49. 1:56person's weight and still fold flat.
50. 1:59Third, the system design, including how
51. 2:02the tiles match what you see in VR.
52. 2:04Fourth, two demo games, Jurassic Island
53. 2:08Escape and Block World Builder. And
54. 2:10fifth, a first user study on how it
55. 2:13feels to use TilePop.
56. 2:15Next, we looked at the 43 related works
57. 2:18the paper cites and sorted them into a
58. 2:20tree with three main branches.
59. 2:23The first is VR haptic feedback with 22
60. 2:26papers. We split it by body part, the
61. 2:29hand and fingertip, the head, limbs and
62. 2:32body, and the whole body on the floor.
63. 2:36The second is haptic shape proxies with
64. 2:3810 papers. These are real objects that
65. 2:41stand in for virtual ones, whether they
66. 2:43are prepared beforehand, mapped to
67. 2:45everyday objects or assembled by robots.
68. 2:48The third is pneumatic shape-changing
69. 2:50interfaces with 11 papers, things that
70. 2:53change shape using air.
71. 2:57For each branch of the tree, we wrote
72. 2:59down what it is, its advantages and its
73. 3:01disadvantages. A few patterns stood out.
74. 3:04Hand and fingertip devices are precise
75. 3:06and give rich feedback, but they stay on
76. 3:09the hand and can be tiring and costly.
77. 3:12Body-sized systems feel very real and
78. 3:15let you move freely, but they need a lot
79. 3:18of space and equipment. And air-based
80. 3:20interfaces are soft and safe, but
81. 3:23they're slower and harder to control
82. 3:25precisely.
83. 3:27Then we turn the tree into a design
84. 3:29space. Across the top is the body part
85. 3:32that receives the feeling, sorted by
86. 3:34size from the fingertip all the way to
87. 3:36the whole body.
88. 3:38Down the side is how strong the feeling
89. 3:40is, from a light vibration at the top to
90. 3:42texture, pressure and force, and
91. 3:44finally, whole body support at the
92. 3:46bottom.
93. 3:47Each paper sits in the cell where it
94. 3:49fits. For example, fingertip vibration
95. 3:52devices are at the top left and large
96. 3:54whole body props are at the bottom
97. 3:56right.
98. 3:57The gray cells are gaps where few works
99. 3:59exist, and we wrote down why each one is
100. 4:02empty.
101. 4:03The yellow cell is strong force at the
102. 4:05fingertip. It is rare because fingertip
103. 4:08devices must stay small, light and safe.
104. 4:11That is the gap our group chose to work
105. 4:13on.
106. 4:15From these gaps we wrote six questions,
107. 4:17one for each gap.
108. 4:19The red numbers on the table show where
109. 4:21each question comes from. For example,
110. 4:24question one asks, how can fingertip
111. 4:26devices give stronger force while
112. 4:28staying small and safe? Question two
113. 4:31asks, how fingertip devices can show
114. 4:33real surface texture, not just
115. 4:35vibration? And question six asks, how
116. 4:39whole body systems like TilePop can
117. 4:41become smaller and more practical?
118. 4:44We picked by two things. Is it
119. 4:46interesting enough as a next step from
120. 4:48TilePop? And can we actually build it?
121. 4:51So idea one wins. It takes TilePop's
122. 4:53airbag idea from the floor down to the
123. 4:56fingertip.
124. 4:57Same principle, new scale. And it can be
125. 5:00built with hobby parts, a mini pump, a
126. 5:02valve, a silicone airbag, and an
127. 5:05Arduino.
128. 5:06The arm idea is easier but less new. The
129. 5:09whole body idea is the closest to
130. 5:11TilePop but it needs industrial
131. 5:13engineering.
132. 5:15Here's our idea, a fingertip sleeve that
133. 5:17makes virtual objects feel real. It has
134. 5:20three parts. One, a soft air sleeve that
135. 5:23gently squeezes your finger so it feels
136. 5:25like you're holding something solid.
137. 5:27Two, a tiny vibration pad under the
138. 5:29fingertip that gives the tap when you
139. 5:32touch something and lets you feel
140. 5:34whether a surface is rough or smooth.
141. 5:37Three, a wrist controller.
142. 5:39It holds the pump and does the heavy
143. 5:41work so your finger stays light and it
144. 5:43keeps the squeeze at a safe level.
145. 5:46This is the same idea in technical
146. 5:48detail. The airbag handles the steady
147. 5:50squeeze, the vibration handles fast
148. 5:52taps, and a pressure sensor at the wrist
149. 5:55keeps it safe.
150. 5:57To sum up, TilePop showed that
151. 5:58air-filled tiles can give the whole body
152. 6:00something real to touch. We took that
153. 6:02idea down to the fingertip where strong
154. 6:05and safe force is still missing.
155. 6:07That's it for our presentation. Thank
156. 6:09you for listening.