no code implementations • 8 Oct 2024 • Po-Hung Yeh, Kuang-Huei Lee, Jun-Cheng Chen
To address these limitations, we propose a stochastic optimization approach, dubbed Demon, to guide the denoising process at inference time without backpropagation through reward functions or model retraining.
1 code implementation • 27 Sep 2024 • Shih-Fang Chen, Jun-Cheng Chen, I-Hong Jhuo, Yen-Yu Lin
PiVOT proposes a prompt generation network with the pre-trained foundation model CLIP to automatically generate and refine visual prompts, enabling the transfer of foundation model knowledge for tracking.
Ranked #1 on Visual Object Tracking on AVisT
no code implementations • 10 Sep 2024 • Jia-Wei Liao, Winston Wang, Tzu-Sian Wang, Li-Xuan Peng, Ju-Hsuan Weng, Cheng-Fu Chou, Jun-Cheng Chen
With the success of Diffusion Models for image generation, the technologies also have revolutionized the aesthetic Quick Response (QR) code generation.
no code implementations • 5 Sep 2024 • Jingcheng Ke, Dele Wang, Jun-Cheng Chen, I-Hong Jhuo, Chia-Wen Lin, Yen-Yu Lin
Extensive experimental results on the RefCOCO, RefCOCO+, RefCOCOg, Flickr30K, RefClef, and Ref-reasoning datasets demonstrate the effectiveness of the DGC module and the EGR strategy in consistently boosting the performances of various graph-based REC methods.
no code implementations • 21 Aug 2024 • Chun-Yen Shih, Li-Xuan Peng, Jia-Wei Liao, Ernie Chu, Cheng-Fu Chou, Jun-Cheng Chen
Diffusion Models have emerged as powerful generative models for high-quality image synthesis, with many subsequent image editing techniques based on them.
no code implementations • 15 Apr 2024 • Tsung-Han Chou, Brian Wang, Wei-Chen Chiu, Jun-Cheng Chen
Class agnostic counting (CAC) is a vision task that can be used to count the total occurrence number of any given reference objects in the query image.
no code implementations • 8 Apr 2024 • Yue-Hua Han, Tai-Ming Huang, Shu-Tzu Lo, Po-Han Huang, Kai-Lung Hua, Jun-Cheng Chen
With the rise of deep learning, generative models have enabled the creation of highly realistic synthetic images, presenting challenges due to their potential misuse.
1 code implementation • 23 Mar 2024 • Jia-Wei Liao, Winston Wang, Tzu-Sian Wang, Li-Xuan Peng, Cheng-Fu Chou, Jun-Cheng Chen
In this paper, we introduce a novel diffusion-model-based aesthetic QR code generation pipeline, utilizing pre-trained ControlNet and guided iterative refinement via a novel classifier guidance (SRG) based on the proposed Scanning-Robust Loss (SRL) tailored with QR code mechanisms, which ensures both aesthetics and scannability.
1 code implementation • 18 Jan 2024 • Tzuhsuan Huang, Chen-Che Huang, Chung-Hao Ku, Jun-Cheng Chen
Unsupervised domain adaptation (UDA) aims to transfer a model learned using labeled data from the source domain to unlabeled data in the target domain.
no code implementations • 20 Sep 2023 • Shafique Ahmed, Chia-Wei Chen, Wenze Ren, Chin-Jou Li, Ernie Chu, Jun-Cheng Chen, Amir Hussain, Hsin-Min Wang, Yu Tsao, Jen-Cheng Hou
Recent studies have increasingly acknowledged the advantages of incorporating visual data into speech enhancement (SE) systems.
1 code implementation • 19 Aug 2023 • Ernie Chu, Tzuhsuan Huang, Shuo-Yen Lin, Jun-Cheng Chen
This study introduces an efficient and effective method, MeDM, that utilizes pre-trained image Diffusion Models for video-to-video translation with consistent temporal flow.
no code implementations • 16 Jul 2023 • Shuo-Yen Lin, Ernie Chu, Che-Hsien Lin, Jun-Cheng Chen, Jia-Ching Wang
To the best of our knowledge, we are the first to propose DM-based naturalistic adversarial patch generation for object detectors.
no code implementations • 30 May 2023 • Ernie Chu, Shuo-Yen Lin, Jun-Cheng Chen
To the best of our knowledge, our proposed method is the first to accomplish diverse and temporally consistent synthetic-to-real video translation using conditional image diffusion models.
no code implementations • 5 Jun 2022 • Jun-Cheng Chen, Cong-Xiao Chen, Li-Juan Duan, Zhi Cai
With the development of artificial intelligence, more and more financial practitioners apply deep reinforcement learning to financial trading strategies. However, It is difficult to extract accurate features due to the characteristics of considerable noise, highly non-stationary, and non-linearity of single-scale time series, which makes it hard to obtain high returns. In this paper, we extract a multi-scale feature matrix on multiple time scales of financial time series, according to the classic financial theory-Chan Theory, and put forward to an approach of multi-scale stroke deep deterministic policy gradient reinforcement learning model(MSSDDPG)to search for the optimal trading strategy. We carried out experiments on the datasets of the Dow Jones, S&P 500 of U. S. stocks, and China's CSI 300, SSE Composite, evaluate the performance of our approach compared with turtle trading strategy, Deep Q-learning(DQN)reinforcement learning strategy, and deep deterministic policy gradient (DDPG) reinforcement learning strategy. The result shows that our approach gets the best performance in China CSI 300, SSE Composite, and get an outstanding result in Dow Jones, S&P 500 of U. S.
1 code implementation • CVPR 2022 • Timmy S. T. Wan, Jun-Cheng Chen, Tzer-Yi Wu, Chu-Song Chen
In visual search, the gallery set could be incrementally growing and added to the database in practice.
no code implementations • 29 Sep 2021 • Nitin Balachandran, Jun-Cheng Chen, Rama Chellappa
Face super-resolution is a challenging and highly ill-posed problem since a low-resolution (LR) face image may correspond to multiple high-resolution (HR) ones during the hallucination process and cause a dramatic identity change for the final super-resolved results.
1 code implementation • 22 May 2021 • Chih-Ting Liu, Jun-Cheng Chen, Chu-Song Chen, Shao-Yi Chien
Besides, we discover the errors not only for the identity labels of tracklets but also for the evaluation protocol for the test data of MARS.
no code implementations • CVPR 2021 • Pin-Chun Chen, Bo-Han Kung, Jun-Cheng Chen
Meanwhile, instead of normalizing the total loss with the number of objects, the proposed approach decomposes the total loss into class-wise losses and normalizes each class loss using the number of objects for the class.
1 code implementation • ICCV 2021 • Yu-Chih-Tuan Hu, Bo-Han Kung, Daniel Stanley Tan, Jun-Cheng Chen, Kai-Lung Hua, Wen-Huang Cheng
Most prior works on physical adversarial attacks mainly focus on the attack performance but seldom enforce any restrictions over the appearance of the generated adversarial patches.
1 code implementation • 16 Oct 2020 • Anshul Shah, Shlok Mishra, Ankan Bansal, Jun-Cheng Chen, Rama Chellappa, Abhinav Shrivastava
Unlike other modalities, constellation of joints and their motion generate models with succinct human motion information for activity recognition.
Ranked #1 on Action Recognition on Mimetics
no code implementations • ECCV 2020 • Pirazh Khorramshahi, Neehar Peri, Jun-Cheng Chen, Rama Chellappa
In recent years, the research community has approached the problem of vehicle re-identification (re-id) with attention-based models, specifically focusing on regions of a vehicle containing discriminative information.
1 code implementation • ICCV 2019 • Pirazh Khorramshahi, Amit Kumar, Neehar Peri, Sai Saketh Rambhatla, Jun-Cheng Chen, Rama Chellappa
In this paper, we present a novel dual-path adaptive attention model for vehicle re-identification (AAVER).
Vehicle Key-Point and Orientation Estimation Vehicle Re-Identification
no code implementations • ICCV 2019 • Jingxiao Zheng, Ruichi Yu, Jun-Cheng Chen, Boyu Lu, Carlos D. Castillo, Rama Chellappa
In this paper, we propose the Uncertainty-Gated Graph (UGG), which conducts graph-based identity propagation between tracklets, which are represented by nodes in a graph.
1 code implementation • CVPR 2019 • Boyu Lu, Jun-Cheng Chen, Rama Chellappa
Image deblurring aims to restore the latent sharp images from the corresponding blurred ones.
no code implementations • 28 Dec 2018 • Matthew Q. Hill, Connor J. Parde, Carlos D. Castillo, Y. Ivette Colon, Rajeev Ranjan, Jun-Cheng Chen, Volker Blanz, Alice J. O'Toole
Deep convolutional neural networks (DCNNs) also create generalizable face representations, but with cascades of simulated neurons.
no code implementations • 10 Dec 2018 • Jingxiao Zheng, Rajeev Ranjan, Ching-Hui Chen, Jun-Cheng Chen, Carlos D. Castillo, Rama Chellappa
In this work, we consider challenging scenarios for unconstrained video-based face recognition from multiple-shot videos and surveillance videos with low-quality frames.
no code implementations • 20 Sep 2018 • Rajeev Ranjan, Ankan Bansal, Jingxiao Zheng, Hongyu Xu, Joshua Gleason, Boyu Lu, Anirudh Nanduri, Jun-Cheng Chen, Carlos D. Castillo, Rama Chellappa
We provide evaluation results of the proposed face detector on challenging unconstrained face detection datasets.
no code implementations • 16 Aug 2018 • Boyu Lu, Jun-Cheng Chen, Carlos D. Castillo, Rama Chellappa
In this paper, we comprehensively study two covariate related problems for unconstrained face verification: first, how covariates affect the performance of deep neural networks on the large-scale unconstrained face verification problem; second, how to utilize covariates to improve verification performance.
no code implementations • CVPR 2018 • Wei-An Lin, Jun-Cheng Chen, Carlos D. Castillo, Rama Chellappa
In this paper, we consider the problem of grouping a collection of unconstrained face images in which the number of subjects is not known.
no code implementations • 3 Apr 2018 • Rajeev Ranjan, Ankan Bansal, Hongyu Xu, Swami Sankaranarayanan, Jun-Cheng Chen, Carlos D. Castillo, Rama Chellappa
We show that integrating this simple step in the training pipeline significantly improves the performance of face verification and recognition systems.
no code implementations • 14 Mar 2017 • Wei-An Lin, Jun-Cheng Chen, Rama Chellappa
In this paper, we propose an unsupervised face clustering algorithm called "Proximity-Aware Hierarchical Clustering" (PAHC) that exploits the local structure of deep representations.
no code implementations • 15 Feb 2017 • Navaneeth Bodla, Jingxiao Zheng, Hongyu Xu, Jun-Cheng Chen, Carlos Castillo, Rama Chellappa
Thus, in this work, we propose a deep heterogeneous feature fusion network to exploit the complementary information present in features generated by different deep convolutional neural networks (DCNNs) for template-based face recognition, where a template refers to a set of still face images or video frames from different sources which introduces more blur, pose, illumination and other variations than traditional face datasets.
no code implementations • 6 Nov 2016 • Connor J. Parde, Carlos Castillo, Matthew Q. Hill, Y. Ivette Colon, Swami Sankaranarayanan, Jun-Cheng Chen, Alice J. O'Toole
The results show that the DCNN features contain surprisingly accurate information about the yaw and pitch of a face, and about whether the face came from a still image or a video frame.
no code implementations • 9 May 2016 • Jun-Cheng Chen, Rajeev Ranjan, Swami Sankaranarayanan, Amit Kumar, Ching-Hui Chen, Vishal M. Patel, Carlos D. Castillo, Rama Chellappa
Over the last five years, methods based on Deep Convolutional Neural Networks (DCNNs) have shown impressive performance improvements for object detection and recognition problems.
no code implementations • 28 Jan 2016 • Rama Chellappa, Jun-Cheng Chen, Rajeev Ranjan, Swami Sankaranarayanan, Amit Kumar, Vishal M. Patel, Carlos D. Castillo
In this paper, we present a brief history of developments in computer vision and artificial neural networks over the last forty years for the problem of image-based recognition.
no code implementations • 7 Aug 2015 • Jun-Cheng Chen, Vishal M. Patel, Rama Chellappa
In this paper, we present an algorithm for unconstrained face verification based on deep convolutional features and evaluate it on the newly released IARPA Janus Benchmark A (IJB-A) dataset.
Ranked #13 on Face Verification on IJB-A