|Submission name||Zhigang-CDPNv2 (MODE 1, FCOS)|
|Submission time (UTC)||Aug. 18, 2020, 7:03 p.m.|
|Task||Pose estimation (BOP 2019-2022)|
|Training model type||Default|
|Training image type||Synthetic (only PBR images provided for BOP Challenge 2020 were used)|
|Publication||CDPN: Coordinates-Based Disentangled Pose Network for Real-Time RGB-Based 6-DoF Object Pose Estimation|
|Training image modalities||RGB|
|Test image modalities||RGB|
In this setting, the models are trained in the same manner with the RGB track in BOP19 challenge. Concretely, for LMO, HB, ICBIN and ITODD datasets, we only use the provided synthetic training data (PBR) in training. While for YCBV, TUDL, TLESS, we use the provided real data and synthetic data (PBR) in training. For each dataset, we trained a CDPN model for each object.
For detection, different from CDPN in BOP19, we used the FCOS with BackBone of vovnet-V2-57-FPN . We trained a detector for each dataset. The detector was trained for 8 epochs with batch size of 4 on a single GPU, 4 workers, and a learning rate of 1e-3. We used color augmentation similar to AAE  during training.
For pose estimation, the difference between our CDPNv2 and the BOP19-version CDPN mainly including:
Besides the color augmentation similar to AAE , we also used the truncation domain randomization in  to improve the system robustness to occlusion.
Considering the organizer provides high-quality PBR synthetic training data in BOP20, we adopt a deeper 34-layer Resnet as the backbone instead of the 18-layer Resnet used in BOP19-version CDPN. Also, the fancy concat structures in BOP19-version CDPN are removed. The input and output resolutions are 256×256 and 64×64 respectively.
During training, the initial learning rate was 1 × 10−4 and the batch size was 6. We used RMSProp with alpha 0.99 and epsilon 1× 10−8 to optimize the network. The model was trained for 160 epochs in total and the learning rate was divided by 10 every 50 epochs
|Computer specifications||Intel i7-7700; GPU: GTX 1070; Memory: 16G|