human stereo mpg class slidescs.wellesley.edu/~cs332/ppt/human_stereo_mpg_class...stereo disparity...
Post on 27-Jan-2021
3 Views
Preview:
TRANSCRIPT
-
1
MatchingfeaturesfortheMPGstereoalgorithm
zero-crossingsofimageconvolutionswithÑ2GoperatorsofdifferentsizeL
M
S
roughdisparitiesoverlargerange
accuratedisparitiesoversmallrange
1
Zero-crossingsforstereomatching
… …
2
Zero-crossingsforstereomatching
… …
3
disparitymap
left right
3020100
evolvingdepthmap
bird’seyeview
screen
4
-
2
disparitymap
left right
3020100
evolvingdepthmap
bird’seyeview
screen
5
disparitymap
left right
24144-6
evolvingdepthmap
bird’seyeview
6
disparitymap
left right
20100-10
evolvingdepthmap
bird’seyeview
7
disparitymap
left right
6-4-14-24
evolvingdepthmap
bird’seyeview
8
-
3
disparitymap
left right
100-10-20
evolvingdepthmap
bird’seyeview
9
disparitymap
left right
0-10-20-30
evolvingdepthmap
bird’seyeview
10
Multi-scalestereoprocessing
left right
Addtogether:(likeahybridimage)•coarsescaleimageswithcoherentstereodisparities
•finescaleimageswithuncorrelated”noise”
Outcome:•canstillfuseimages•toleratelargerangeofstereodisparity•getaroughsenseofdepth
11
Multi-scalestereoprocessing
left right
Addtogether:(likeahybridimage)•coarsescaleimageswithuncorrelated“noise”
•finescaleimageswithcoherentstereodisparities
Outcome:•canstillfuseimages•onlytoleratesmallrangeofstereodisparity
•morevergenceeyemovements
12
-
4
SelectivityforstereoboundariesinV2
VonderHeydt &colleagues:SomeV2cellsareselectivefortheorientation,contrast,andsideofborderownershipofanedge...foredgesdefinedbyluminanceorstereodisparity
13
top related