Method

Optical Flow with Semi Global Matching [fSGM]


Submitted on 2 Sep. 2012 21:48 by
Simon Hermann (The University of Auckland)

Running time:60 s
Environment:1 core @ 2.4 Ghz (C/C++)

Method Description:
fSGM is a new algorithm which is based on a scan line dynamic
programming concept. It uses the cost integration strategy of
semi-global matching. The major novelty of fSGM is that it embeds
a scan line DP approach into a hierarchical scheme, which allows it
to handle large displacement fields.
Parameters:
P_kappa=12
P_tau=6
Latex Bibtex:
@INPROCEEDINGS{HERM2012a,
author = {Simon Hermann and Reinhard Klette},
title = {Hierarchical Scan Line Dynamic Programming for Optical
Flow using Semi-Global Matching},
booktitle = {ACCV Workshops},
year = {2012}
}

Detailed Results

This page provides detailed results for the method(s) selected. For each of the first 20 test images, the number of erroneous pixels at all thresholds is depicted in the table. Underneath, the left input image, the disparity / end-point error map and the estimated (and interpolated) disparity / optical flow map are shown. The error map scales linearly between 0 (black) and >=5 (white) pixels error. Red denotes all occluded pixels, falling outside the image boundaries. The false color map is scaled to the largest ground truth disparity / flow value.

Test Set Average

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 13.90 % 25.39 % 3.2 px 12.2 px
3 pixels 10.74 % 22.66 % 3.2 px 12.2 px
4 pixels 9.27 % 21.38 % 3.2 px 12.2 px
5 pixels 8.36 % 20.57 % 3.2 px 12.2 px
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Reflective Regions

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Test Image 0

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 15.94 % 28.38 % 2.8 px 10.5 px
3 pixels 13.79 % 26.53 % 2.8 px 10.5 px
4 pixels 12.32 % 25.26 % 2.8 px 10.5 px
5 pixels 11.07 % 24.20 % 2.8 px 10.5 px
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Test Image 1

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 6.91 % 19.83 % 1.1 px 6.4 px
3 pixels 4.87 % 18.03 % 1.1 px 6.4 px
4 pixels 3.96 % 17.20 % 1.1 px 6.4 px
5 pixels 3.39 % 16.65 % 1.1 px 6.4 px
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Test Image 2

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 14.71 % 28.30 % 2.3 px 10.1 px
3 pixels 11.54 % 25.60 % 2.3 px 10.1 px
4 pixels 9.75 % 24.04 % 2.3 px 10.1 px
5 pixels 8.38 % 22.85 % 2.3 px 10.1 px
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Test Image 3

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 18.76 % 32.27 % 2.8 px 11.0 px
3 pixels 14.67 % 28.82 % 2.8 px 11.0 px
4 pixels 12.28 % 26.82 % 2.8 px 11.0 px
5 pixels 10.51 % 25.34 % 2.8 px 11.0 px
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Test Image 4

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 10.50 % 18.23 % 1.6 px 3.6 px
3 pixels 7.01 % 15.00 % 1.6 px 3.6 px
4 pixels 5.68 % 13.75 % 1.6 px 3.6 px
5 pixels 4.98 % 13.09 % 1.6 px 3.6 px
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Test Image 5

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 20.58 % 33.24 % 4.6 px 15.1 px
3 pixels 17.70 % 30.82 % 4.6 px 15.1 px
4 pixels 16.66 % 29.93 % 4.6 px 15.1 px
5 pixels 16.08 % 29.42 % 4.6 px 15.1 px
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Test Image 6

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 13.00 % 24.66 % 2.1 px 9.4 px
3 pixels 9.55 % 21.67 % 2.1 px 9.4 px
4 pixels 7.86 % 20.18 % 2.1 px 9.4 px
5 pixels 6.47 % 18.98 % 2.1 px 9.4 px
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Test Image 7

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 18.27 % 31.84 % 4.0 px 15.9 px
3 pixels 14.07 % 28.33 % 4.0 px 15.9 px
4 pixels 11.89 % 26.52 % 4.0 px 15.9 px
5 pixels 10.51 % 25.37 % 4.0 px 15.9 px
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Test Image 8

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 9.90 % 26.07 % 3.0 px 18.0 px
3 pixels 7.42 % 24.02 % 3.0 px 18.0 px
4 pixels 6.47 % 23.21 % 3.0 px 18.0 px
5 pixels 5.90 % 22.73 % 3.0 px 18.0 px
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Test Image 9

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 23.63 % 35.47 % 2.4 px 10.9 px
3 pixels 17.59 % 30.35 % 2.4 px 10.9 px
4 pixels 13.84 % 27.17 % 2.4 px 10.9 px
5 pixels 11.38 % 25.08 % 2.4 px 10.9 px
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Test Image 10

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 11.76 % 27.33 % 2.7 px 19.2 px
3 pixels 8.63 % 24.74 % 2.7 px 19.2 px
4 pixels 7.19 % 23.54 % 2.7 px 19.2 px
5 pixels 6.43 % 22.90 % 2.7 px 19.2 px
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Test Image 11

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 12.89 % 26.46 % 2.0 px 10.4 px
3 pixels 8.20 % 22.44 % 2.0 px 10.4 px
4 pixels 6.24 % 20.71 % 2.0 px 10.4 px
5 pixels 5.26 % 19.80 % 2.0 px 10.4 px
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Test Image 12

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 16.10 % 29.42 % 3.4 px 14.5 px
3 pixels 13.33 % 27.08 % 3.4 px 14.5 px
4 pixels 11.80 % 25.78 % 3.4 px 14.5 px
5 pixels 10.66 % 24.82 % 3.4 px 14.5 px
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Test Image 13

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 16.03 % 26.27 % 3.9 px 10.8 px
3 pixels 13.31 % 23.88 % 3.9 px 10.8 px
4 pixels 11.98 % 22.70 % 3.9 px 10.8 px
5 pixels 10.98 % 21.82 % 3.9 px 10.8 px
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Test Image 14

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 24.76 % 37.56 % 8.0 px 20.0 px
3 pixels 20.76 % 34.24 % 8.0 px 20.0 px
4 pixels 18.76 % 32.58 % 8.0 px 20.0 px
5 pixels 17.65 % 31.66 % 8.0 px 20.0 px
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Test Image 15

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 22.22 % 35.80 % 2.9 px 15.9 px
3 pixels 16.68 % 31.19 % 2.9 px 15.9 px
4 pixels 13.60 % 28.60 % 2.9 px 15.9 px
5 pixels 11.31 % 26.67 % 2.9 px 15.9 px
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Test Image 16

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 2.96 % 12.53 % 0.7 px 8.5 px
3 pixels 1.32 % 10.76 % 0.7 px 8.5 px
4 pixels 0.88 % 10.21 % 0.7 px 8.5 px
5 pixels 0.70 % 9.94 % 0.7 px 8.5 px
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Test Image 17

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 11.64 % 25.51 % 1.7 px 11.1 px
3 pixels 8.36 % 22.71 % 1.7 px 11.1 px
4 pixels 6.89 % 21.42 % 1.7 px 11.1 px
5 pixels 6.03 % 20.66 % 1.7 px 11.1 px
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Test Image 18

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 3.19 % 13.03 % 1.1 px 6.8 px
3 pixels 2.33 % 12.17 % 1.1 px 6.8 px
4 pixels 2.04 % 11.85 % 1.1 px 6.8 px
5 pixels 1.88 % 11.63 % 1.1 px 6.8 px
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Test Image 19

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 6.10 % 17.30 % 1.1 px 5.6 px
3 pixels 4.68 % 16.04 % 1.1 px 5.6 px
4 pixels 3.98 % 15.42 % 1.1 px 5.6 px
5 pixels 3.50 % 14.97 % 1.1 px 5.6 px
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