Method

Context-aware Iterative Geometry Encoding Volume [CA-IGEV]
https://github.com/FiredTable/Polar3D

Submitted on 26 Jan. 2026 09:32 by
Junzhuo Zhou (Northwestern Polytechnical University)

Running time:0.05 s
Environment:GPU @ 2.5 Ghz (Python)

Method Description:
Stereo matching algorithms struggle to adapt to
highly reflective and textureless surfaces
Propose a lightweight, learnable context-aware group
correlation computation module: CAGWC
Parameters:
The model was implemented using the PyTorch deep
learning framework, and all experiments were
conducted on NVIDIA RTX 4090 GPUs. For training
the stereo matching network, the AdamW optimizer
was employed, with gradients of learnable
parameters clipped to the range of [-1, 1]. When
training on the SceneFlow dataset, the total
number of training steps was set to 200k, using a
one-cycle learning rate scheduling policy with an
initial learning rate of $2\times10^{-4}$. For
training on the KITTI dataset, the model was
initialized with weights pre-trained on SceneFlow
and then fine-tuned on the KITTI dataset for 60k
steps, also using a one-cycle learning rate
scheduler with an initial learning rate of
$1\times10^{-4}$. For all experiments, the batch
size was set to 12. Input images were randomly
cropped to a size of 256 $\times$ 768 pixels, and
data augmentation techniques such as asymmetric
color augmentation and spatial augmentation were
applied. During training, 22 update iterations
were
Latex Bibtex:
The paper is currently under submission.

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 1.54 % 2.06 % 0.4 px 0.4 px
3 pixels 1.01 % 1.34 % 0.4 px 0.4 px
4 pixels 0.78 % 1.03 % 0.4 px 0.4 px
5 pixels 0.63 % 0.84 % 0.4 px 0.4 px
This table as LaTeX

Reflective Regions

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 6.80 % 9.12 % 0.8 px 0.9 px
3 pixels 3.53 % 5.20 % 0.8 px 0.9 px
4 pixels 2.31 % 3.52 % 0.8 px 0.9 px
5 pixels 1.71 % 2.57 % 0.8 px 0.9 px
This table as LaTeX

Test Image 0

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 0.99 % 1.13 % 0.3 px 0.3 px
3 pixels 0.80 % 0.87 % 0.3 px 0.3 px
4 pixels 0.66 % 0.74 % 0.3 px 0.3 px
5 pixels 0.61 % 0.69 % 0.3 px 0.3 px
This table as LaTeX





Test Image 1

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 2.25 % 4.13 % 0.4 px 0.5 px
3 pixels 1.19 % 2.04 % 0.4 px 0.5 px
4 pixels 0.90 % 1.69 % 0.4 px 0.5 px
5 pixels 0.76 % 1.51 % 0.4 px 0.5 px
This table as LaTeX





Test Image 2

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 0.63 % 0.80 % 0.2 px 0.3 px
3 pixels 0.48 % 0.55 % 0.2 px 0.3 px
4 pixels 0.36 % 0.41 % 0.2 px 0.3 px
5 pixels 0.31 % 0.35 % 0.2 px 0.3 px
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Test Image 3

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 0.34 % 1.38 % 0.2 px 0.3 px
3 pixels 0.19 % 0.62 % 0.2 px 0.3 px
4 pixels 0.17 % 0.21 % 0.2 px 0.3 px
5 pixels 0.16 % 0.15 % 0.2 px 0.3 px
This table as LaTeX





Test Image 4

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 0.74 % 0.82 % 0.2 px 0.3 px
3 pixels 0.59 % 0.64 % 0.2 px 0.3 px
4 pixels 0.43 % 0.46 % 0.2 px 0.3 px
5 pixels 0.15 % 0.19 % 0.2 px 0.3 px
This table as LaTeX





Test Image 5

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 0.79 % 0.83 % 0.3 px 0.3 px
3 pixels 0.57 % 0.59 % 0.3 px 0.3 px
4 pixels 0.51 % 0.53 % 0.3 px 0.3 px
5 pixels 0.38 % 0.40 % 0.3 px 0.3 px
This table as LaTeX





Test Image 6

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 3.02 % 3.26 % 0.5 px 0.5 px
3 pixels 1.49 % 1.69 % 0.5 px 0.5 px
4 pixels 1.03 % 1.20 % 0.5 px 0.5 px
5 pixels 0.87 % 1.02 % 0.5 px 0.5 px
This table as LaTeX





Test Image 7

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 1.37 % 2.12 % 0.4 px 0.4 px
3 pixels 0.85 % 1.33 % 0.4 px 0.4 px
4 pixels 0.72 % 1.05 % 0.4 px 0.4 px
5 pixels 0.63 % 0.80 % 0.4 px 0.4 px
This table as LaTeX





Test Image 8

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 0.97 % 1.00 % 0.3 px 0.3 px
3 pixels 0.69 % 0.69 % 0.3 px 0.3 px
4 pixels 0.57 % 0.57 % 0.3 px 0.3 px
5 pixels 0.47 % 0.47 % 0.3 px 0.3 px
This table as LaTeX





Test Image 9

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 1.36 % 1.68 % 0.4 px 0.6 px
3 pixels 0.94 % 1.22 % 0.4 px 0.6 px
4 pixels 0.80 % 1.04 % 0.4 px 0.6 px
5 pixels 0.76 % 0.96 % 0.4 px 0.6 px
This table as LaTeX





Test Image 10

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 1.37 % 1.74 % 0.4 px 0.4 px
3 pixels 0.98 % 1.20 % 0.4 px 0.4 px
4 pixels 0.76 % 0.97 % 0.4 px 0.4 px
5 pixels 0.66 % 0.87 % 0.4 px 0.4 px
This table as LaTeX





Test Image 11

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 1.22 % 1.20 % 0.4 px 0.4 px
3 pixels 0.68 % 0.66 % 0.4 px 0.4 px
4 pixels 0.44 % 0.43 % 0.4 px 0.4 px
5 pixels 0.34 % 0.33 % 0.4 px 0.4 px
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Test Image 12

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 1.85 % 3.59 % 0.4 px 0.5 px
3 pixels 1.30 % 2.83 % 0.4 px 0.5 px
4 pixels 1.02 % 2.28 % 0.4 px 0.5 px
5 pixels 0.88 % 1.87 % 0.4 px 0.5 px
This table as LaTeX





Test Image 13

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 1.56 % 2.40 % 0.4 px 0.5 px
3 pixels 1.02 % 1.40 % 0.4 px 0.5 px
4 pixels 0.87 % 1.09 % 0.4 px 0.5 px
5 pixels 0.82 % 0.90 % 0.4 px 0.5 px
This table as LaTeX





Test Image 14

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 0.25 % 1.29 % 0.2 px 0.3 px
3 pixels 0.15 % 0.75 % 0.2 px 0.3 px
4 pixels 0.13 % 0.35 % 0.2 px 0.3 px
5 pixels 0.12 % 0.12 % 0.2 px 0.3 px
This table as LaTeX





Test Image 15

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 2.28 % 2.24 % 0.4 px 0.4 px
3 pixels 1.44 % 1.40 % 0.4 px 0.4 px
4 pixels 0.91 % 0.89 % 0.4 px 0.4 px
5 pixels 0.56 % 0.54 % 0.4 px 0.4 px
This table as LaTeX





Test Image 16

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 1.47 % 1.44 % 0.4 px 0.4 px
3 pixels 0.77 % 0.75 % 0.4 px 0.4 px
4 pixels 0.48 % 0.47 % 0.4 px 0.4 px
5 pixels 0.38 % 0.37 % 0.4 px 0.4 px
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Test Image 17

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 2.70 % 2.98 % 0.4 px 0.5 px
3 pixels 1.62 % 1.83 % 0.4 px 0.5 px
4 pixels 1.27 % 1.38 % 0.4 px 0.5 px
5 pixels 1.11 % 1.22 % 0.4 px 0.5 px
This table as LaTeX





Test Image 18

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 0.41 % 0.41 % 0.2 px 0.2 px
3 pixels 0.34 % 0.34 % 0.2 px 0.2 px
4 pixels 0.27 % 0.27 % 0.2 px 0.2 px
5 pixels 0.22 % 0.22 % 0.2 px 0.2 px
This table as LaTeX





Test Image 19

Error Out-Noc Out-All Avg-Noc Avg-All
2 pixels 0.91 % 0.88 % 0.4 px 0.4 px
3 pixels 0.68 % 0.66 % 0.4 px 0.4 px
4 pixels 0.58 % 0.56 % 0.4 px 0.4 px
5 pixels 0.52 % 0.51 % 0.4 px 0.4 px
This table as LaTeX







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