This research mainly emphasizes on traffic detection thus essentially involving object detection and classification. The particular work discussed here is motivated from unsatisfactory attempts of re-using well known pre-trained object detection networks for domain specific data. In this course, some trivial issues leading to prominent performance drop are identified and ways to resolve them are discussed. For example, some simple yet relevant tricks regarding data collection and sampling prove to be very beneficial. Also, introducing a blur net to deal with blurred real time data is another important factor promoting performance elevation. We further study the neural network design issues for beneficial object classification and involve shared, region-independent convolutional features. Adaptive learning rates to deal with saddle points are also investigated and an average covariance matrix based pre-conditioned approach is proposed. We also introduce the use of optical flow features to accommodate orientation information. Experimental results demonstrate that this results in a steady rise in the performance rate.
翻译:本研究主要强调交通探测,因此基本上涉及物体的探测和分类。本讨论的特定工作是因为试图重新使用众所周知的事先训练的物体探测网络,以收集特定领域的数据,但结果不尽如人意。在这一过程中,查明了一些导致显著性能下降的无关紧要的问题,并讨论了解决这些问题的方法。例如,关于数据收集和取样的一些简单而相关的技巧证明是非常有益的。此外,采用模糊的网处理模糊的实时数据是促进性能提高的另一个重要因素。我们进一步研究了有益物体分类的神经网络设计问题,并涉及共享、区域独立的共变性特征。还调查了处理轮廓点的适应性学习率,并提出了基于事先设定方法的平均共变式矩阵。我们还采用了光流特性,以适应定向信息。实验结果表明,这导致性能率稳步上升。