ST-DETR: Spatio-Temporal Object Traces Attention Detection Transformer

• URL: http://arxiv.org/abs/2107.05887v1
• Date: Tue, 13 Jul 2021 07:38:08 GMT
• Title: ST-DETR: Spatio-Temporal Object Traces Attention Detection Transformer
• Authors: Eslam Mohamed and Ahmad El-Sallab
• Abstract summary: We propose a Spatio-Temporal Transformer-based architecture for object detection from a sequence of temporal frames. We employ the full attention mechanisms to take advantage of the features correlations over both dimensions. Results show a significant 5% mAP improvement on the KITTI MOD dataset.
• Score: 2.4366811507669124
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: We propose ST-DETR, a Spatio-Temporal Transformer-based architecture for object detection from a sequence of temporal frames. We treat the temporal frames as sequences in both space and time and employ the full attention mechanisms to take advantage of the features correlations over both dimensions. This treatment enables us to deal with frames sequence as temporal object features traces over every location in the space. We explore two possible approaches; the early spatial features aggregation over the temporal dimension, and the late temporal aggregation of object query spatial features. Moreover, we propose a novel Temporal Positional Embedding technique to encode the time sequence information. To evaluate our approach, we choose the Moving Object Detection (MOD)task, since it is a perfect candidate to showcase the importance of the temporal dimension. Results show a significant 5% mAP improvement on the KITTI MOD dataset over the 1-step spatial baseline.

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