Alpha Matting Evaluation Website
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Image matting evaluation results      Competition:   Low resolution  High resolution  
Error type:  SAD   MSE   Gradient   Connectivity  
Mean Squared Error overall
avg.
small
avg.
large
avg.
user
Troll
(Strongly Transparent)
Input  
Doll
(Strongly Transparent)
Input  
Donkey
(Medium Transparent)
Input  
Elephant
(Medium Transparent)
Input  
Plant
(Little Transparent)
Input  
Pineapple
(Little Transparent)
Input  
Plastic bag
(Highly Transparent)
Input  
Net
(Highly Transparent)
Input  
  rank rank rank rank small large user small large user small large user small large user small large user small large user small large user small large user
TransMatting2.522.82.60.2 3 0.2 2 0.2 1 0.1 1 0.1 1 0.2 4 0.1 2 0.1 3 0.1 1 0 2 0 4 0 2 0.2 1 0.3 3 0.4 2 0.1 3 0.1 3 0.1 1 0.8 2 0.8 5 0.9 9 0.5 2 0.4 1 0.4 1
LFPNet4.64.63.35.90.2 2 0.2 3 0.3 3 0.2 7 0.1 2 0.2 6 0.1 9 0.1 6 0.1 6 0 4 0 2 0.1 9 0.2 2 0.2 1 0.4 1 0.1 2 0.1 2 0.1 2 0.9 8 1 8 1 17 0.5 3 0.5 2 0.5 3
TMFNet4.62.946.90.1 1 0.2 1 0.3 13 0.1 4 0.2 10 0.2 7 0.1 1 0.1 1 0.1 4 0 1 0 3 0.1 7 0.2 4 0.4 7 0.6 8 0.1 4 0.1 4 0.2 6 0.7 1 0.7 1 0.7 1 0.5 7 0.5 5 0.7 9
S²Matt5.25.63.86.10.2 5 0.2 5 0.3 4 0.2 11 0.2 4 0.2 8 0.1 10 0.1 7 0.1 7 0 3 0 1 0.1 8 0.2 3 0.3 2 0.5 3 0.1 1 0.1 1 0.1 3 0.9 6 0.9 6 0.9 12 0.5 6 0.5 4 0.5 4
IamAlpha5.36.554.40.2 4 0.2 4 0.2 2 0.2 9 0.2 5 0.2 3 0.1 5 0.1 4 0.1 8 0 9 0 6 0 1 0.3 9 0.3 5 0.5 5 0.1 10 0.2 9 0.2 7 0.8 5 0.8 4 0.8 7 0.5 1 0.5 3 0.5 2
TIMI-Net6.37.96.34.60.3 9 0.3 6 0.3 8 0.1 5 0.2 7 0.2 2 0.1 8 0.1 8 0.1 3 0 11 0 9 0.1 6 0.4 16 0.3 6 0.5 4 0.1 5 0.1 5 0.1 4 0.8 4 0.8 2 0.8 5 0.5 5 0.6 7 0.6 5
SIM7.18.35.57.60.3 10 0.3 7 0.3 7 0.2 14 0.2 9 0.3 15 0.1 3 0.1 2 0.1 2 0 10 0 7 0 3 0.3 10 0.3 4 0.5 6 0.1 8 0.1 6 0.2 5 0.8 3 0.8 3 0.9 8 0.6 8 0.6 6 0.9 15
HDMatt11.814.510.610.30.3 16 0.3 14 0.4 17 0.2 12 0.2 11 0.3 14 0.1 4 0.1 5 0.1 5 0 17 0 13 0 4 0.4 23 0.4 9 0.6 7 0.1 12 0.2 10 0.2 8 0.9 9 0.9 7 0.9 13 0.8 23 0.8 16 0.8 14
PIIAMatting12.87.316.3150.3 8 0.3 13 0.3 11 0.1 3 0.2 14 0.3 11 0.1 7 0.2 18 0.1 10 0 6 0.1 25 0.2 31 0.3 8 0.6 34 0.8 23 0.1 7 0.1 7 0.3 20 1.1 15 1 10 0.8 6 0.5 4 0.6 9 0.6 8
Background Matting13.51011.818.60.3 11 0.3 12 0.3 14 0.2 10 0.2 18 0.4 20 0.1 6 0.2 10 0.1 12 0 8 0 8 0.1 20 0.3 11 0.4 8 0.7 11 0.1 11 0.2 11 0.3 19 0.9 7 1 9 0.9 14 0.7 16 0.8 18 1.3 39
AdaMatting14.51213.4180.3 18 0.4 18 0.4 15 0.2 8 0.2 8 0.3 18 0.2 15 0.2 11 0.2 19 0 5 0 5 0.1 14 0.4 15 0.6 27 1 35 0.1 6 0.2 8 0.3 14 1.1 20 1.2 22 1.1 23 0.6 9 0.6 8 0.6 6
SampleNet Matting1511.315.518.30.3 7 0.3 8 0.3 6 0.1 2 0.2 3 0.2 5 0.2 20 0.2 19 0.2 18 0 7 0 11 0.1 23 0.4 17 0.6 33 1.2 44 0.1 9 0.3 18 0.3 11 1.1 16 1.1 17 1.2 28 0.7 12 0.8 15 0.8 11
GCA Matting16.516.615.417.60.3 6 0.3 9 0.4 18 0.2 18 0.2 12 0.3 17 0.2 14 0.2 14 0.2 14 0 18 0 12 0.1 5 0.5 32 0.6 32 0.8 15 0.2 17 0.2 13 0.5 33 1 11 1.1 14 1.1 22 0.7 17 0.8 17 0.9 17
A2U Matting16.514.313.4220.3 14 0.3 11 0.4 20 0.2 17 0.2 15 0.3 10 0.2 13 0.2 12 0.1 11 0 13 0 10 0.1 10 0.4 20 0.6 25 0.8 21 0.2 14 0.2 12 0.8 50 1 10 1 11 1 20 0.7 13 0.7 11 1.2 34
ATNet Matting16.9191615.80.3 13 0.3 15 0.3 5 0.1 6 0.2 6 0.2 1 0.2 21 0.2 16 0.2 22 0.1 32 0.1 21 0.1 15 0.4 29 0.5 21 0.7 13 0.2 15 0.2 14 0.4 24 1.3 25 1.3 25 1.4 36 0.7 11 0.7 10 0.7 10
Context-aware Matting1922.820.413.90.3 17 0.3 17 0.3 12 0.3 32 0.3 24 0.4 21 0.2 16 0.2 15 0.1 13 0 19 0.1 19 0.1 12 0.5 40 0.6 24 0.7 12 0.2 20 0.4 22 0.3 10 1.1 19 1.2 19 0.9 11 0.8 19 0.9 23 0.9 20
VDRN Matting19.522.319.616.80.3 12 0.3 10 0.3 10 0.2 20 0.2 16 0.4 22 0.1 11 0.2 13 0.1 9 0.1 37 0.1 20 0.1 13 0.5 33 0.7 37 0.8 22 0.2 19 0.2 15 0.3 13 1.1 17 1.1 16 1 16 0.9 29 1.1 30 1.1 29
FE2E High-Quality Matting19.818.420.920.10.4 20 0.4 21 0.3 9 0.3 28 0.3 21 0.4 25 0.2 19 0.2 17 0.2 17 0 14 0 17 0.1 21 0.5 31 0.8 45 1.4 46 0.2 13 0.3 17 0.3 18 1 12 1.1 15 1 18 0.6 10 0.7 14 0.6 7
Deep Matting20.619.319.5230.4 25 0.4 22 0.4 19 0.2 13 0.3 23 0.3 13 0.1 12 0.1 9 0.2 15 0 20 0 15 0.2 30 0.5 35 0.6 35 1 30 0.2 16 0.2 16 0.4 27 1.1 13 1.1 12 1.1 24 0.8 20 0.9 24 1 26
Information-flow matting21.224.320.818.60.3 19 0.4 19 0.5 24 0.3 29 0.4 28 0.5 30 0.3 25 0.3 23 0.2 25 0.1 29 0.1 24 0.1 24 0.4 28 0.4 11 0.6 9 0.2 22 0.3 19 0.3 15 1.3 24 1.2 23 0.8 3 0.8 18 0.8 19 0.9 19
DCNN Matting21.623.419.4220.4 30 0.5 24 0.7 30 0.2 19 0.3 20 0.4 24 0.2 23 0.3 24 0.2 27 0.1 26 0.1 22 0.1 16 0.4 25 0.4 10 0.8 18 0.2 24 0.4 23 0.3 17 1.3 26 1.2 20 1 21 0.7 14 0.7 12 0.9 23
IndexNet Matting24.527.123.123.40.5 42 0.6 25 0.5 21 0.2 16 0.2 13 0.3 12 0.2 18 0.3 25 0.2 16 0 15 0 16 0.1 11 0.6 45 0.7 40 1 34 0.3 32 0.3 20 0.4 23 1.1 21 1.2 21 1.1 27 0.9 28 1 25 1.4 43
AlphaGAN25.626.12723.80.3 15 0.3 16 0.4 16 0.2 15 0.2 17 0.3 9 0.2 17 0.2 20 0.2 20 0 16 0 14 0.1 17 0.6 49 0.9 50 1.1 40 0.3 34 0.5 30 0.4 28 1.3 23 1.3 26 1.2 30 1.1 40 1.4 43 1.1 30
Three-layer graph matting27.123.924.4330.4 21 0.7 27 0.6 28 0.2 21 0.3 19 0.6 41 0.2 22 0.3 22 0.2 26 0 12 0.1 18 0.2 37 0.4 26 0.4 13 1 36 0.2 27 0.5 32 0.7 46 1.7 41 1.9 44 1.5 38 0.8 21 0.8 20 0.8 12
Three Stages Matting28.325.929.629.50.4 24 0.5 23 0.6 26 0.2 22 0.4 26 0.5 31 0.3 32 0.3 32 0.3 31 0.1 34 0.2 34 0.2 46 0.4 24 0.9 49 1.4 48 0.2 23 0.4 26 0.3 9 1.6 33 1.5 34 1.3 32 0.7 15 0.7 13 0.8 13
LNSP Matting2926.929310.5 34 1.9 53 1.2 55 0.2 23 0.4 27 0.5 37 0.3 30 0.4 37 0.2 24 0 21 0.1 26 0.2 34 0.4 27 0.5 15 0.8 16 0.2 18 0.3 21 0.4 29 1.4 30 1.2 24 0.8 4 1 32 1.1 29 1.5 49
Patch-based Matting30.926.431.834.60.4 29 1.4 42 0.9 44 0.3 31 0.5 44 0.6 42 0.3 29 0.3 26 0.3 39 0 23 0.2 27 0.1 28 0.3 7 0.5 14 0.8 20 0.2 29 0.6 39 0.5 30 1.3 27 1.4 27 1.6 43 1 36 1.2 35 1.1 31
ATPM Matting32.136.934.125.30.6 43 0.8 31 0.5 23 0.3 25 0.3 22 0.5 32 0.4 59 0.5 55 0.3 46 0.1 44 0.2 38 0.2 32 0.6 48 0.7 36 0.8 17 0.3 31 0.4 28 0.4 26 1.1 14 1.1 13 0.8 2 0.9 31 1.9 50 0.9 24
KL-Divergence Based Sparse Sampling32.631.831.534.50.4 27 0.9 32 0.7 29 0.3 30 0.5 37 0.5 36 0.3 47 0.4 33 0.3 36 0.1 25 0.2 33 0.1 18 0.4 21 0.4 12 1.2 41 0.4 40 0.6 38 0.6 41 1.7 40 2 46 2.1 53 0.8 24 0.8 21 0.9 22
CCM3337.133.928.10.5 38 1.2 39 0.8 40 0.3 37 0.5 41 0.5 33 0.3 26 0.4 35 0.2 21 0.1 40 0.2 28 0.1 22 0.5 42 0.6 28 0.7 14 0.3 30 0.4 25 0.3 16 1.7 39 1.8 42 1.5 42 1.2 45 1.2 33 1.3 37
SVR Matting33.23732.929.81.1 57 2.7 61 1.2 54 0.4 52 0.4 30 0.4 28 0.3 43 0.3 29 0.2 23 0.1 28 0.2 32 0.2 40 0.3 13 0.5 20 0.7 10 0.2 26 0.4 27 0.3 21 1.4 29 1.4 28 0.9 15 1.3 48 1.2 36 1.5 47
Graph-based sparse matting33.534.133.932.50.5 40 1.5 45 0.8 33 0.3 27 0.3 25 0.3 19 0.3 40 0.4 40 0.3 33 0 22 0.2 29 0.1 27 0.5 34 0.5 17 0.9 25 0.2 25 0.6 35 0.5 32 2.2 51 2.4 53 1.9 51 1 34 1.1 27 1.3 40
Comprehensive sampling34.232.134.635.90.4 28 1.2 40 0.8 34 0.3 41 0.6 46 0.6 51 0.3 42 0.3 28 0.3 41 0.1 30 0.2 30 0.1 25 0.2 5 0.5 22 0.9 27 0.3 37 0.9 44 0.5 34 1.6 36 1.5 30 1.5 37 1 38 1.2 37 1.3 38
TSPS-RV Matting34.535.331.336.90.4 23 0.8 29 0.5 25 0.3 34 0.4 31 0.6 47 0.3 38 0.3 31 0.3 35 0 24 0.1 23 0.3 54 0.8 54 0.6 26 1 33 0.5 48 0.6 36 0.8 51 1.6 35 1.6 35 1.4 34 0.8 26 1.3 39 0.9 16
Comprehensive Weighted Color and Texture34.833.437.633.50.7 49 0.8 30 0.8 41 0.4 48 0.7 50 0.5 35 0.3 27 0.3 27 0.2 30 0.1 27 0.2 36 0.1 19 0.3 6 0.7 38 1 37 0.2 21 0.4 24 0.3 12 2.2 52 2.1 49 1.7 48 1 37 1.7 47 1.4 46
CSC Matting36.940.630.939.30.6 46 0.8 28 0.7 31 0.3 40 0.4 29 0.7 52 0.4 51 0.4 36 0.4 56 0.1 49 0.2 35 0.2 50 0.4 18 0.5 16 0.8 19 0.3 36 0.5 29 0.6 40 1.7 38 1.5 32 1.3 33 1.2 47 1.3 42 1.2 33
Sparse coded matting37.539.839.133.50.6 48 2.7 60 0.8 39 0.3 39 0.4 35 0.3 16 0.3 48 0.4 45 0.3 44 0.1 39 0.2 31 0.1 26 0.4 14 0.5 18 0.9 24 0.2 28 0.5 31 0.3 22 2.3 53 2.6 55 2.1 52 1.3 49 1.3 38 1.4 45
LocalSamplingAndKnnClassification37.53936.137.30.5 35 0.7 26 0.5 22 0.3 24 0.4 32 0.5 39 0.3 28 0.3 30 0.2 29 0.1 33 0.2 39 0.2 39 0.9 56 1 51 1.7 53 0.6 52 1 48 0.9 52 1.8 42 1.5 31 1.2 29 1.1 42 1.2 32 1.2 35
Global Sampling Matting39.135.442.439.60.4 26 2.3 56 0.9 43 0.3 35 0.6 45 0.6 49 0.3 34 0.4 49 0.3 32 0.1 35 0.3 45 0.2 43 0.5 37 0.6 23 1 31 0.4 42 1 47 0.7 44 1.9 44 2 48 1.7 47 0.9 30 1 26 1.1 28
Weighted Color and Texture Matting39.337.440.540.10.5 39 0.9 33 0.8 32 0.4 44 0.6 47 0.6 48 0.3 24 0.3 21 0.2 28 0.1 43 0.5 54 0.2 48 0.5 36 0.8 42 1.5 50 0.3 33 0.5 33 0.5 31 1.6 34 1.6 37 1.5 40 1.2 46 2.6 57 1.4 44
LNCLM matting4042.639.437.90.4 22 0.4 20 0.9 45 0.4 47 0.5 40 0.4 23 0.4 58 0.6 59 0.3 45 0.1 54 0.3 43 0.2 49 0.6 51 0.8 41 1.1 38 0.4 39 0.9 46 0.5 35 1.8 43 1.6 38 1.1 26 0.8 27 1.1 28 1.3 42
Iterative Transductive Matting4041.538.5400.6 44 0.9 34 0.8 38 0.3 33 0.7 48 0.6 46 0.4 53 0.4 39 0.3 40 0.1 45 0.5 56 0.2 45 0.6 44 0.6 31 1.4 49 0.4 46 0.8 42 0.7 43 1.9 45 1.6 36 1.5 41 0.8 22 0.9 22 0.9 18
KNN Matting40.343.841.635.60.8 52 1 36 0.8 36 0.4 46 0.5 43 0.5 29 0.4 52 0.5 52 0.3 54 0.1 50 0.3 46 0.2 51 0.7 53 0.9 48 0.9 29 0.3 35 0.5 34 0.4 25 1.1 18 1.1 18 0.9 10 1.2 44 2.3 56 1.6 51
Shared Matting40.439.143.638.40.5 31 1.6 47 0.9 42 0.5 54 0.9 55 0.5 40 0.3 31 0.4 34 0.3 43 0.1 46 0.4 49 0.2 36 0.4 22 0.6 30 0.9 26 0.4 38 0.6 37 0.5 36 2.9 58 2.8 57 2.7 57 1 33 1.3 40 1 27
Segmentation-based matting43.344.142.643.30.5 41 2.2 54 1.1 49 0.3 42 0.4 33 0.4 26 0.3 39 0.4 47 0.3 37 0.1 31 0.2 37 0.2 29 0.6 46 0.5 19 1.2 45 0.4 45 0.7 40 0.8 49 2.7 56 3.3 60 3.6 59 1.4 53 1.9 51 1.6 52
Improved color matting43.745.344.841.10.8 54 2.4 57 1.5 58 0.3 38 0.5 39 0.5 38 0.3 33 0.4 48 0.3 34 0.1 47 0.3 44 0.2 41 0.7 52 0.7 39 0.9 28 0.4 41 0.7 41 0.7 45 2 47 1.9 45 1.4 35 1.3 50 1.5 45 1.5 50
Improving Sampling Criterion44.542.846.9440.5 32 1.3 41 0.8 35 0.6 57 1 56 0.7 54 0.3 45 0.5 56 0.3 52 0.3 62 0.8 61 0.4 61 0.5 39 0.9 47 1.2 42 0.6 54 1.1 50 0.8 48 1.4 28 1.5 33 1.5 39 0.8 25 1.1 31 0.9 21
SRLO Matting45.444.946.944.50.7 51 1 35 1 46 0.4 50 0.8 54 0.7 53 0.4 50 0.4 42 0.3 53 0.1 51 0.6 57 0.2 44 0.4 30 0.8 43 1.5 51 0.4 44 1 49 0.6 39 2 48 2.3 51 1.7 45 1 35 1.4 44 1 25
Learning Based Matting46.747.447.445.40.8 55 1.6 46 1.3 56 0.4 49 0.4 36 0.5 34 0.3 41 0.4 46 0.3 42 0.1 42 0.2 40 0.2 35 0.5 43 1.2 54 2 55 0.9 60 1.7 59 2 61 1.6 32 1.7 40 1 19 2.2 57 2.7 58 4.2 61
Local Spline Regression (LSR)4747.645.947.40.5 33 1.5 43 1 47 0.3 36 0.5 42 0.6 44 0.4 49 0.4 51 0.3 47 0.1 41 0.3 42 0.2 42 1.2 60 1.3 58 2.2 57 0.8 58 1.1 51 1.1 54 2.1 50 1.7 39 1.3 31 1.5 54 1.3 41 3 57
Global Sampling Matting (filter version)47.444.948.848.50.6 45 2.4 58 1.1 50 0.5 53 0.7 51 0.7 57 0.4 55 0.5 54 0.4 58 0.2 55 0.4 48 0.3 57 0.3 12 0.6 29 1 32 0.5 50 1.2 54 0.8 47 2 46 2.2 50 2.4 55 1.2 43 1.5 46 1.1 32
SPS matting47.444.452.8450.5 36 1.6 48 0.6 27 0.7 58 1.1 58 0.7 55 0.4 57 0.6 60 0.4 57 0.2 60 0.9 62 0.3 55 0.4 19 0.8 46 1.2 43 0.5 49 1.2 53 0.6 38 1.7 37 2 47 1.7 44 1.1 39 1.7 48 1.3 41
Closed-Form Matting47.545.147.350.30.5 37 1.8 52 1.1 51 0.3 26 0.4 34 0.6 43 0.3 36 0.4 44 0.3 38 0.1 36 0.3 41 0.2 38 1.2 59 1.4 59 2.3 60 0.8 57 1.6 58 1.6 59 3 59 2.7 56 1.9 50 1.3 51 1.2 34 5 63
LMSPIR47.947.548.547.60.8 53 1.1 37 1.2 52 0.4 45 0.8 53 0.6 50 0.3 46 0.4 38 0.3 49 0.1 48 0.5 53 0.2 47 0.6 50 1.2 57 2 56 0.4 43 0.9 45 0.6 37 2.3 54 2.3 52 2.2 54 1.1 41 2 53 1.2 36
Shared Matting (Real Time)5049.850.449.80.6 47 1.7 51 1 48 0.7 60 1.2 59 0.8 59 0.3 37 0.4 41 0.3 51 0.2 57 0.6 58 0.2 53 0.5 38 0.8 44 1.1 39 0.4 47 0.8 43 0.6 42 3 60 3 58 3 58 1.3 52 1.9 49 1.5 48
Large Kernel Matting51.253.650.849.31.2 59 1.6 49 1.7 59 0.3 43 0.5 38 0.4 27 0.4 54 0.5 53 0.3 55 0.1 52 0.5 55 0.2 52 0.9 57 1.1 53 1.4 47 0.6 53 1.1 52 1 53 2.7 55 2.4 54 1.7 46 2.1 56 2 52 2.8 55
Robust Matting52.648.353.855.91.1 58 2.8 62 1.7 60 0.7 59 1.5 60 0.9 60 0.3 35 0.4 50 0.3 48 0.1 53 0.5 51 0.3 56 0.5 41 1.2 55 1.9 54 0.5 51 1.5 57 1.2 57 1.5 31 1.8 41 2.6 56 2.4 58 2.3 54 2.9 56
Cell-based matting Laplacian52.85551.851.80.7 50 1.7 50 0.8 37 0.4 51 0.8 52 0.6 45 0.5 60 0.5 57 0.4 62 0.2 61 0.5 50 0.3 59 0.8 55 1 52 1.5 52 0.8 59 1.3 55 1.2 56