Method

OccInpFlow: Occlusion-Inpainting Optical FlowEstimation by Unsupervised Learning [OccInpFlow]
https://github.com/coolbeam/OccInpFlow

Submitted on 3 Sep. 2020 07:46 by
Kunming Luo (Megvii)

Running time:0.02 s
Environment:1 core @ 2.5 Ghz (Python)

Method Description:
Occlusion is an inevitable and critical problem in
unsupervised optical flow learning. Existing methods
either treat occlusions equally as non-occluded
regions or simply remove them to avoid
incorrectness. However, the occlusion regions can
provide effective information for optical flow
learning. In this paper, we present OccInpFlow, an
occlusion-inpainting framework to make full use of
occlusion regions. Specifically, a new appearance-
flow network is proposed to inpaint occluded flows
based on the image content. Moreover, a boundary
warp is proposed to deal with occlusions caused by
displacement beyond image border. We conduct
experiments on multiple leading flow benchmark data
sets such as Flying Chairs, KITTI and MPI-Sintel,
which demonstrate that the performance is
significantly improved by our proposed occlusion
handling framework.
Parameters:
modele size=5.26 M
Latex Bibtex:

Detailed Results

This page provides detailed results for the method(s) selected. For the first 20 test images, the percentage of erroneous pixels is depicted in the table. We use the error metric described in Object Scene Flow for Autonomous Vehicles (CVPR 2015), which considers a pixel to be correctly estimated if the disparity or flow end-point error is <3px or <5% (for scene flow this criterion needs to be fulfilled for both disparity maps and the flow map). Underneath, the left input image, the estimated results and the error maps are shown (for disp_0/disp_1/flow/scene_flow, respectively). The error map uses the log-color scale described in Object Scene Flow for Autonomous Vehicles (CVPR 2015), depicting correct estimates (<3px or <5% error) in blue and wrong estimates in red color tones. Dark regions in the error images denote the occluded pixels which fall outside the image boundaries. The false color maps of the results are scaled to the largest ground truth disparity values / flow magnitudes.

Test Set Average

Error Fl-bg Fl-fg Fl-all
All / All 8.63 15.74 9.81
All / Est 8.63 15.74 9.81
Noc / All 6.57 12.97 7.73
Noc / Est 6.57 12.97 7.73
This table as LaTeX

Test Image 0

Error Fl-bg Fl-fg Fl-all
All / All 3.96 50.63 10.37
All / Est 3.96 50.63 10.37
Noc / All 4.15 50.63 11.20
Noc / Est 4.15 50.63 11.20
This table as LaTeX

Input Image

Flow Result

Flow Error


Test Image 1

Error Fl-bg Fl-fg Fl-all
All / All 4.42 17.54 5.89
All / Est 4.42 17.54 5.89
Noc / All 4.49 17.54 6.10
Noc / Est 4.49 17.54 6.10
This table as LaTeX

Input Image

Flow Result

Flow Error


Test Image 2

Error Fl-bg Fl-fg Fl-all
All / All 8.34 13.01 8.57
All / Est 8.34 13.01 8.57
Noc / All 5.99 13.01 6.40
Noc / Est 5.99 13.01 6.40
This table as LaTeX

Input Image

Flow Result

Flow Error


Test Image 3

Error Fl-bg Fl-fg Fl-all
All / All 13.25 66.84 18.20
All / Est 13.25 66.84 18.20
Noc / All 11.73 55.74 15.52
Noc / Est 11.73 55.74 15.52
This table as LaTeX

Input Image

Flow Result

Flow Error


Test Image 4

Error Fl-bg Fl-fg Fl-all
All / All 10.00 29.77 13.28
All / Est 10.00 29.77 13.28
Noc / All 7.56 29.53 11.67
Noc / Est 7.56 29.53 11.67
This table as LaTeX

Input Image

Flow Result

Flow Error


Test Image 5

Error Fl-bg Fl-fg Fl-all
All / All 8.87 0.00 8.07
All / Est 8.87 0.00 8.07
Noc / All 7.95 0.00 7.14
Noc / Est 7.95 0.00 7.14
This table as LaTeX

Input Image

Flow Result

Flow Error


Test Image 6

Error Fl-bg Fl-fg Fl-all
All / All 9.14 1.05 8.28
All / Est 9.14 1.05 8.28
Noc / All 7.44 1.05 6.68
Noc / Est 7.44 1.05 6.68
This table as LaTeX

Input Image

Flow Result

Flow Error


Test Image 7

Error Fl-bg Fl-fg Fl-all
All / All 1.95 57.35 12.79
All / Est 1.95 57.35 12.79
Noc / All 1.95 59.28 12.67
Noc / Est 1.95 59.28 12.67
This table as LaTeX

Input Image

Flow Result

Flow Error


Test Image 8

Error Fl-bg Fl-fg Fl-all
All / All 1.84 27.43 6.56
All / Est 1.84 27.43 6.56
Noc / All 1.84 27.43 6.56
Noc / Est 1.84 27.43 6.56
This table as LaTeX

Input Image

Flow Result

Flow Error


Test Image 9

Error Fl-bg Fl-fg Fl-all
All / All 3.11 51.58 15.50
All / Est 3.11 51.58 15.50
Noc / All 3.11 51.58 15.50
Noc / Est 3.11 51.58 15.50
This table as LaTeX

Input Image

Flow Result

Flow Error


Test Image 10

Error Fl-bg Fl-fg Fl-all
All / All 4.25 12.67 6.17
All / Est 4.25 12.67 6.17
Noc / All 4.56 12.67 6.67
Noc / Est 4.56 12.67 6.67
This table as LaTeX

Input Image

Flow Result

Flow Error


Test Image 11

Error Fl-bg Fl-fg Fl-all
All / All 4.60 5.45 4.75
All / Est 4.60 5.45 4.75
Noc / All 5.02 5.46 5.11
Noc / Est 5.02 5.46 5.11
This table as LaTeX

Input Image

Flow Result

Flow Error


Test Image 12

Error Fl-bg Fl-fg Fl-all
All / All 4.57 6.11 4.67
All / Est 4.57 6.11 4.67
Noc / All 3.25 6.11 3.48
Noc / Est 3.25 6.11 3.48
This table as LaTeX

Input Image

Flow Result

Flow Error


Test Image 13

Error Fl-bg Fl-fg Fl-all
All / All 5.22 11.43 5.99
All / Est 5.22 11.43 5.99
Noc / All 2.69 12.99 3.88
Noc / Est 2.69 12.99 3.88
This table as LaTeX

Input Image

Flow Result

Flow Error


Test Image 14

Error Fl-bg Fl-fg Fl-all
All / All 3.85 6.13 3.89
All / Est 3.85 6.13 3.89
Noc / All 2.94 6.13 3.01
Noc / Est 2.94 6.13 3.01
This table as LaTeX

Input Image

Flow Result

Flow Error


Test Image 15

Error Fl-bg Fl-fg Fl-all
All / All 12.89 8.31 12.47
All / Est 12.89 8.31 12.47
Noc / All 9.53 8.31 9.39
Noc / Est 9.53 8.31 9.39
This table as LaTeX

Input Image

Flow Result

Flow Error


Test Image 16

Error Fl-bg Fl-fg Fl-all
All / All 16.22 17.03 16.34
All / Est 16.22 17.03 16.34
Noc / All 10.96 17.03 12.05
Noc / Est 10.96 17.03 12.05
This table as LaTeX

Input Image

Flow Result

Flow Error


Test Image 17

Error Fl-bg Fl-fg Fl-all
All / All 6.92 15.88 7.85
All / Est 6.92 15.88 7.85
Noc / All 6.74 15.88 7.93
Noc / Est 6.74 15.88 7.93
This table as LaTeX

Input Image

Flow Result

Flow Error


Test Image 18

Error Fl-bg Fl-fg Fl-all
All / All 20.37 79.82 48.62
All / Est 20.37 79.82 48.62
Noc / All 14.94 47.52 23.92
Noc / Est 14.94 47.52 23.92
This table as LaTeX

Input Image

Flow Result

Flow Error


Test Image 19

Error Fl-bg Fl-fg Fl-all
All / All 6.40 13.16 7.16
All / Est 6.40 13.16 7.16
Noc / All 5.99 13.16 7.03
Noc / Est 5.99 13.16 7.03
This table as LaTeX

Input Image

Flow Result

Flow Error




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