Juan Carlos Niebles

All Publications

• Quantifying Parkinson's disease motor severity under uncertainty using MDS-UPDRS videos. Medical image analysis Lu, M., Zhao, Q., Poston, K. L., Sullivan, E. V., Pfefferbaum, A., Shahid, M., Katz, M., Kouhsari, L. M., Schulman, K., Milstein, A., Niebles, J. C., Henderson, V. W., Fei-Fei, L., Pohl, K. M., Adeli, E. 2021; 73: 102179

  Abstract

  Parkinson's disease (PD) is a brain disorder that primarily affects motor function, leading to slow movement, tremor, and stiffness, as well as postural instability and difficulty with walking/balance. The severity of PD motor impairments is clinically assessed by part III of the Movement Disorder Society Unified Parkinson's Disease Rating Scale (MDS-UPDRS), a universally-accepted rating scale. However, experts often disagree on the exact scoring of individuals. In the presence of label noise, training a machine learning model using only scores from a single rater may introduce bias, while training models with multiple noisy ratings is a challenging task due to the inter-rater variabilities. In this paper, we introduce an ordinal focal neural network to estimate the MDS-UPDRS scores from input videos, to leverage the ordinal nature of MDS-UPDRS scores and combat class imbalance. To handle multiple noisy labels per exam, the training of the network is regularized via rater confusion estimation (RCE), which encodes the rating habits and skills of raters via a confusion matrix. We apply our pipeline to estimate MDS-UPDRS test scores from their video recordings including gait (with multiple Raters, R=3) and finger tapping scores (single rater). On a sizable clinical dataset for the gait test (N=55), we obtained a classification accuracy of 72% with majority vote as ground-truth, and an accuracy of ∼84% of our model predicting at least one of the raters' scores. Our work demonstrates how computer-assisted technologies can be used to track patients and their motor impairments, even when there is uncertainty in the clinical ratings. The latest version of the code will be available at https://github.com/mlu355/PD-Motor-Severity-Estimation.

  View details for DOI 10.1016/j.media.2021.102179

  View details for PubMedID 34340101

• Metadata Normalization. Proceedings. IEEE Computer Society Conference on Computer Vision and Pattern Recognition Lu, M., Zhao, Q., Zhang, J., Pohl, K. M., Fei-Fei, L., Niebles, J. C., Adeli, E. 2021; 2021: 10912-10922

  Abstract

  Batch Normalization (BN) and its variants have delivered tremendous success in combating the covariate shift induced by the training step of deep learning methods. While these techniques normalize feature distributions by standardizing with batch statistics, they do not correct the influence on features from extraneous variables or multiple distributions. Such extra variables, referred to as metadata here, may create bias or confounding effects (e.g., race when classifying gender from face images). We introduce the Metadata Normalization (MDN) layer, a new batch-level operation which can be used end-to-end within the training framework, to correct the influence of metadata on feature distributions. MDN adopts a regression analysis technique traditionally used for preprocessing to remove (regress out) the metadata effects on model features during training. We utilize a metric based on distance correlation to quantify the distribution bias from the metadata and demonstrate that our method successfully removes metadata effects on four diverse settings: one synthetic, one 2D image, one video, and one 3D medical image dataset.

  View details for DOI 10.1109/cvpr46437.2021.01077

  View details for PubMedID 34776724

  View details for PubMedCentralID PMC8589298

• CoCon: Cooperative-Contrastive Learning Rai, N., Adeli, E., Lee, K., Gaidon, A., Niebles, J., IEEE Comp Soc IEEE COMPUTER SOC. 2021: 3379-3388

  View details for DOI 10.1109/CVPRW53098.2021.00377

  View details for Web of Science ID 000705890203052

• Home Action Genome: Cooperative Compositional Action Understanding Rai, N., Chen, H., Ji, J., Desai, R., Kozuka, K., Ishizaka, S., Adeli, E., Niebles, J., IEEE COMP SOC IEEE COMPUTER SOC. 2021: 11179-11188

  View details for DOI 10.1109/CVPR46437.2021.01103

  View details for Web of Science ID 000742075001037

• Representation Learning with Statistical Independence to Mitigate Bias. IEEE Winter Conference on Applications of Computer Vision. IEEE Winter Conference on Applications of Computer Vision Adeli, E., Zhao, Q., Pfefferbaum, A., Sullivan, E. V., Fei-Fei, L., Niebles, J. C., Pohl, K. M. 2021; 2021: 2512-2522

  Abstract

  Presence of bias (in datasets or tasks) is inarguably one of the most critical challenges in machine learning applications that has alluded to pivotal debates in recent years. Such challenges range from spurious associations between variables in medical studies to the bias of race in gender or face recognition systems. Controlling for all types of biases in the dataset curation stage is cumbersome and sometimes impossible. The alternative is to use the available data and build models incorporating fair representation learning. In this paper, we propose such a model based on adversarial training with two competing objectives to learn features that have (1) maximum discriminative power with respect to the task and (2) minimal statistical mean dependence with the protected (bias) variable(s). Our approach does so by incorporating a new adversarial loss function that encourages a vanished correlation between the bias and the learned features. We apply our method to synthetic data, medical images (containing task bias), and a dataset for gender classification (containing dataset bias). Our results show that the learned features by our method not only result in superior prediction performance but also are unbiased.

  View details for DOI 10.1109/wacv48630.2021.00256

  View details for PubMedID 34522832

• Vision-based Estimation of MDS-UPDRS Gait Scores for Assessing Parkinson's Disease Motor Severity. Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention Lu, M., Poston, K., Pfefferbaum, A., Sullivan, E. V., Fei-Fei, L., Pohl, K. M., Niebles, J. C., Adeli, E. 2020; 12263: 637–47

  Abstract

  Parkinson's disease (PD) is a progressive neurological disorder primarily affecting motor function resulting in tremor at rest, rigidity, bradykinesia, and postural instability. The physical severity of PD impairments can be quantified through the Movement Disorder Society Unified Parkinson's Disease Rating Scale (MDS-UPDRS), a widely used clinical rating scale. Accurate and quantitative assessment of disease progression is critical to developing a treatment that slows or stops further advancement of the disease. Prior work has mainly focused on dopamine transport neuroimaging for diagnosis or costly and intrusive wearables evaluating motor impairments. For the first time, we propose a computer vision-based model that observes non-intrusive video recordings of individuals, extracts their 3D body skeletons, tracks them through time, and classifies the movements according to the MDS-UPDRS gait scores. Experimental results show that our proposed method performs significantly better than chance and competing methods with an F 1-score of 0.83 and a balanced accuracy of 81%. This is the first benchmark for classifying PD patients based on MDS-UPDRS gait severity and could be an objective biomarker for disease severity. Our work demonstrates how computer-assisted technologies can be used to non-intrusively monitor patients and their motor impairments. The code is available at https://github.com/mlu355/PD-Motor-Severity-Estimation.

  View details for DOI 10.1007/978-3-030-59716-0_61

  View details for PubMedID 33103164

• Socially and Contextually Aware Human Motion and Pose Forecasting IEEE ROBOTICS AND AUTOMATION LETTERS Adeli, V., Adeli, E., Reid, I., Niebles, J., Rezatofighi, H. 2020; 5 (4): 6033–40

  View details for DOI 10.1109/LRA.2020.3010742

  View details for Web of Science ID 000554894900027

• Explaining VQA predictions using visual grounding and a knowledge base IMAGE AND VISION COMPUTING Riquelme, F., De Goyeneche, A., Zhang, Y., Niebles, J., Soto, A. 2020; 101

  View details for DOI 10.1016/j.imavis.2020.103968

  View details for Web of Science ID 000570137900006

• Segmenting the Future IEEE ROBOTICS AND AUTOMATION LETTERS Chiu, H., Adeli, E., Niebles, J. 2020; 5 (3): 4202–9

  View details for DOI 10.1109/LRA.2020.2992184

  View details for Web of Science ID 000541731600001

• Spatiotemporal Relationship Reasoning for Pedestrian Intent Prediction IEEE ROBOTICS AND AUTOMATION LETTERS Liu, B., Adeli, E., Cao, Z., Lee, K., Shenoi, A., Gaidon, A., Niebles, J. 2020; 5 (2): 3485–92

  View details for DOI 10.1109/LRA.2020.2976305

  View details for Web of Science ID 000520954200034

• Disentangling Human Dynamics for Pedestrian Locomotion Forecasting with Noisy Supervision Mangalam, K., Adeli, E., Lee, K., Gaidon, A., Niebles, J., IEEE Comp Soc IEEE COMPUTER SOC. 2020: 2773–82

  View details for Web of Science ID 000578444802088

• Motion Reasoning for Goal-Based Imitation Learning Huang, D., Chao, Y., Paxton, C., Deng, X., Li Fei-Fei, Niebles, J., Garg, A., Fox, D., IEEE IEEE. 2020: 4878-4884

  View details for Web of Science ID 000712319503063

• Adversarial Cross-Domain Action Recognition with Co-Attention Pan, B., Cao, Z., Adeli, E., Niebles, J., Assoc Advancement Artificial Intelligence ASSOC ADVANCEMENT ARTIFICIAL INTELLIGENCE. 2020: 11815-11822

  View details for Web of Science ID 000668126804033

• Action-Agnostic Human Pose Forecasting Chiu, H., Adeli, E., Wang, B., Huang, D., Niebles, J., IEEE IEEE. 2019: 1423–32

  View details for DOI 10.1109/WACV.2019.00156

  View details for Web of Science ID 000469423400149

• Learning Temporal Action ProposalsWith Fewer Labels Ji, J., Cao, K., Niebles, J., IEEE IEEE. 2019: 7072–81

  View details for DOI 10.1109/ICCV.2019.00717

  View details for Web of Science ID 000548549202018

• Imitation Learning for Human Pose Prediction Wang, B., Adeli, E., Chiu, H., Huang, D., Niebles, J., IEEE IEEE. 2019: 7123–32

  View details for DOI 10.1109/ICCV.2019.00722

  View details for Web of Science ID 000548549202023

• Continuous Relaxation of Symbolic Planner for One-Shot Imitation Learning Huang, D., Xu, D., Zhu, Y., Garg, A., Savarese, S., Fei-Fei, L., Niebles, J., IEEE IEEE. 2019: 2635–42

  View details for Web of Science ID 000544658402034

• Peeking into the Future: Predicting Future Person Activities and Locations in Videos Liang, J., Jiang, L., Niebles, J., Hauptmann, A., Li Fei-Fei, IEEE Comp Soc IEEE COMPUTER SOC. 2019: 5718–27

  View details for DOI 10.1109/CVPR.2019.00587

  View details for Web of Science ID 000529484005092

• (DTW)-T-3: Discriminative Differentiable Dynamic Time Warping for Weakly Supervised Action Alignment and Segmentation Chang, C., Huang, D., Sui, Y., Li Fei-Fei, Niebles, J., IEEE Comp Soc IEEE COMPUTER SOC. 2019: 3541–50

  View details for DOI 10.1109/CVPR.2019.00366

  View details for Web of Science ID 000529484003071

• Peeking into the Future: Predicting Future Person Activities and Locations in Videos Liang, J., Jiang, L., Niebles, J., Hauptmann, A., Li Fei-Fei, IEEE IEEE. 2019: 2960–63

  View details for DOI 10.1109/CVPRW.2019.00358

  View details for Web of Science ID 000569983600352

• Neural Task Graphs: Generalizing to Unseen Tasks from a Single Video Demonstration Huang, D., Nair, S., Xu, D., Zhu, Y., Garg, A., Li Fei-Fei, Savarese, S., Niebles, J., IEEE Comp Soc IEEE. 2019: 8557–66

  View details for DOI 10.1109/CVPR.2019.00876

  View details for Web of Science ID 000542649302018

• Interpretable Visual Question Answering by Visual Grounding from Attention Supervision Mining Zhang, Y., Niebles, J., Soto, A., IEEE IEEE. 2019: 349–57

  View details for DOI 10.1109/WACV.2019.00043

  View details for Web of Science ID 000469423400036

• Learning to Decompose and Disentangle Representations for Video Prediction Hsieh, J., Liu, B., Huang, D., Fei-Fei, L., Niebles, J., Bengio, S., Wallach, H., Larochelle, H., Grauman, K., CesaBianchi, N., Garnett, R. NEURAL INFORMATION PROCESSING SYSTEMS (NIPS). 2018

  View details for Web of Science ID 000461823300048

• Finding "It": Weakly-Supervised Reference-Aware Visual Grounding in Instructional Videos Huang, D., Buch, S., Dery, L., Garg, A., Li Fei-Fei, Niebles, J., IEEE IEEE. 2018: 5948–57

  View details for DOI 10.1109/CVPR.2018.00623

  View details for Web of Science ID 000457843606011

• What Makes a Video a Video: Analyzing Temporal Information in Video Understanding Models and Datasets Huang, D., Ramanathan, V., Mahajan, D., Torresani, L., Paluri, M., Li Fei-Fei, Niebles, J., IEEE IEEE. 2018: 7366–75

  View details for DOI 10.1109/CVPR.2018.00769

  View details for Web of Science ID 000457843607054

• Sparse composition of body poses and atomic actions for human activity recognition in RGB-D videos IMAGE AND VISION COMPUTING Lillo, I., Niebles, J., Soto, A. 2017; 59: 63–75

  View details for DOI 10.1016/j.imavis.2016.11.004

  View details for Web of Science ID 000397687900005

• Risky Region Localization with Point Supervision Kozuka, K., Niebles, J., IEEE IEEE. 2017: 246–53

  View details for DOI 10.1109/ICCVW.2017.38

  View details for Web of Science ID 000425239600031

• Agent-Centric Risk Assessment: Accident Anticipation and Risky Region Localization Zeng, K., Chou, S., Chan, F., Niebles, J., Sun, M., IEEE IEEE. 2017: 1330–38

  View details for DOI 10.1109/CVPR.2017.146

  View details for Web of Science ID 000418371401041

• Dense-Captioning Events in Videos Krishna, R., Hata, K., Ren, F., Fei-Fei, L., Niebles, J., IEEE IEEE. 2017: 706–15

  View details for DOI 10.1109/ICCV.2017.83

  View details for Web of Science ID 000425498400074

• Visual Forecasting by Imitating Dynamics in Natural Sequences Zeng, K., Shen, W. B., Huang, D., Sun, M., Niebles, J., IEEE IEEE. 2017: 3018–27

  View details for DOI 10.1109/ICCV.2017.326

  View details for Web of Science ID 000425498403009

• Unsupervised Visual-Linguistic Reference Resolution in Instructional Videos Huang, D., Lim, J. J., Fei-Fei, L., Niebles, J., IEEE IEEE. 2017: 1032–41

  View details for DOI 10.1109/CVPR.2017.116

  View details for Web of Science ID 000418371401011

• Connectionist Temporal Modeling for Weakly Supervised Action Labeling Huang, D., Li Fei-Fei, Niebles, J., Leibe, B., Matas, J., Sebe, N., Welling, M. SPRINGER INTERNATIONAL PUBLISHING AG. 2016: 137–53

  View details for DOI 10.1007/978-3-319-46493-0_9

  View details for Web of Science ID 000389385100009

• Fast Temporal Activity Proposals for Efficient Detection of Human Actions in Untrimmed Videos Heilbron, F., Niebles, J., Ghanem, B., IEEE IEEE. 2016: 1914–23

  View details for DOI 10.1109/CVPR.2016.211

  View details for Web of Science ID 000400012301103

• A Hierarchical Pose-Based Approach to Complex Action Understanding Using Dictionaries of Actionlets and Motion Poselets Lillo, I., Niebles, J., Soto, A., IEEE IEEE. 2016: 1981–90

  View details for DOI 10.1109/CVPR.2016.218

  View details for Web of Science ID 000400012302004

• Title Generation for User Generated Videos Zeng, K., Chen, T., Niebles, J., Sun, M., Leibe, B., Matas, J., Sebe, N., Welling, M. SPRINGER INTERNATIONAL PUBLISHING AG. 2016: 609–25

  View details for DOI 10.1007/978-3-319-46475-6_38

  View details for Web of Science ID 000389383900038

• DAPs: Deep Action Proposals for Action Understanding Escorcia, V., Heilbron, F., Niebles, J., Ghanem, B., Leibe, B., Matas, J., Sebe, N., Welling, M. SPRINGER INTERNATIONAL PUBLISHING AG. 2016: 768–84

  View details for DOI 10.1007/978-3-319-46487-9_47

  View details for Web of Science ID 000389384800047

• Modeling Temporal Structure of Decomposable Motion Segments for Activity Classification 11th European Conference on Computer Vision Niebles, J. C., Chen, C., Li Fei-Fei, F. F. SPRINGER-VERLAG BERLIN. 2010: 392–405

  View details for Web of Science ID 000286164000029