Search Results for author: Dongqing Zhang

Found 8 papers, 3 papers with code

Shot Contrastive Self-Supervised Learning for Scene Boundary Detection

no code implementations CVPR 2021 Shixing Chen, Xiaohan Nie, David Fan, Dongqing Zhang, Vimal Bhat, Raffay Hamid

To assess the effectiveness of ShotCoL on novel applications of scene boundary detection, we take on the problem of finding timestamps in movies and TV episodes where video-ads can be inserted while offering a minimally disruptive viewing experience.

Boundary Detection Contrastive Learning +1

On scenario construction for stochastic shortest path problems in real road networks

no code implementations1 Jun 2020 Dongqing Zhang, Stein W. Wallace, Zhaoxia Guo, Yucheng Dong, Michal Kaut

We find that (1) the scenario generation method generates unbiased scenarios and strongly outperforms random sampling in terms of stability (i. e., relative difference and variance) whichever origin-destination pair and objective function is used; (2) to achieve a certain accuracy, the number of scenarios required for scenario generation is much lower than that for random sampling, typically about 6-10 times lower for a stability level of 1\%; and (3) different origin-destination pairs and different objective functions could require different numbers of scenarios to achieve a specified stability.

Computational Efficiency

A multi-level convolutional LSTM model for the segmentation of left ventricle myocardium in infarcted porcine cine MR images

no code implementations14 Nov 2018 Dongqing Zhang, Ilknur Icke, Belma Dogdas, Sarayu Parimal, Smita Sampath, Joseph Forbes, Ansuman Bagchi, Chih-Liang Chin, Antong Chen

Automatic segmentation of left ventricle (LV) myocardium in cardiac short-axis cine MR images acquired on subjects with myocardial infarction is a challenging task, mainly because of the various types of image inhomogeneity caused by the infarctions.

Myocardium Segmentation

LQ-Nets: Learned Quantization for Highly Accurate and Compact Deep Neural Networks

1 code implementation ECCV 2018 Dongqing Zhang, Jiaolong Yang, Dongqiangzi Ye, Gang Hua

Although weight and activation quantization is an effective approach for Deep Neural Network (DNN) compression and has a lot of potentials to increase inference speed leveraging bit-operations, there is still a noticeable gap in terms of prediction accuracy between the quantized model and the full-precision model.

Quantization

Counting Grid Aggregation for Event Retrieval and Recognition

no code implementations5 Apr 2016 Zhanning Gao, Gang Hua, Dongqing Zhang, Jianru Xue, Nanning Zheng

Event retrieval and recognition in a large corpus of videos necessitates a holistic fixed-size visual representation at the video clip level that is comprehensive, compact, and yet discriminative.

Retrieval

Cannot find the paper you are looking for? You can Submit a new open access paper.