Video object detection algorithm based on dynamic combination of sparse feature propagation and dense feature aggregation

摘要

In comparison with static image object detection, focusing on video objects has greater research significance in realizing intelligent monitoring and automatic anomaly detection. However, it may be challenging to apply the most advanced image recognition networks to video data, as the number of static frame files represented in a video is often huge, thereby causing the problem of the slow evaluation speed, in addition to other issues, such as motion blur, low resolution, occlusion, and object deformation. In the present study, to mitigate these deficiencies, we applied sparse feature propagation to improve the detection speed and dense feature aggregation to refine the detection accuracy. Moreover, we utilized the key frame scheduling strategy relying on the consistency of feature information. Implementing these technologies allowed steadily improving the detection speed and accuracy to achieve high performance. To verify the applicability of the optimized video detection strategy proposed in this paper, we selected the part of the video data in the ImageNet VID training dataset. Then, the other part of this dataset was used to conduct the experiments, including the calculation and comparison of mean average precision (MAP) and frames per second (FPS).