16 accepted papers
In HTTP Adaptive Streaming (HAS), a video is encoded at multiple bitrate-resolution pairs, referred to as representations, which enables users to choose the most suitable representation based on their network connection. To optimize the set of bitrate-resolution pairs and improve the Quality of Expe…
The deployment of multi-stream fusion strategy on behavioral recognition from skeletal data can extract complementary features from different information streams and improve the recognition accuracy, but suffers from high model complexity and a large number of parameters. Besides, existing multi-str…
Omnidirectional media formats, particularly 360° videos with spatial audio, provide new immersive experiences and introduce a novel dimension to content consumption.We explore the relationship between subjective data quality and metric performance evaluation in the context of Omnidirectional videos…
Understanding the deployment of human gaze on 3D graphical objects is of critical importance in order to propose rich and complex 3D environments without strong latency nor rendering constraints. However, the data needed to study this gaze deployment can be costly and difficult to obtain, especially…
Video Quality Metrics (VQM) are models used to predict the score that a user would give to the quality of a video visualization. They are widely used in video processing systems, for monitoring end-to-end quality or system troubleshooting for example. In these scenarios, the improvement is quantifie…
The current learning pipelines for robotics manipulation infer movement primitives sequentially along the temporal-evolving axis, which can result in an accumulation of prediction errors and subsequently cause the visual observations to fall out of the training distribution. This paper proposes a no…
How to robustly rank the aesthetic quality of given images has been a long-standing ill-posed topic. Such challenge stems mainly from the diverse subjective opinions of different observers about the varied types of content. There is a growing interest in estimating the user agreement by considering…
The goal of most subjective studies is to place a set of stimuli on a perceptual scale. This is mostly done directly by rating, e.g. using single or double stimulus methodologies, or indirectly by ranking or pairwise comparison. All these methods estimate the perceptual magnitudes of the stimuli on…
User Generated Content (UGC) refers to media generated by users for end-consumers that represent most of the media exchange on social media. UGC is subject to acquisition and transmission limitations that disable access to the pristine, i.e., perfect source content. Evaluating their quality, especia…
Nowadays, with the vigorous expansion and development of gaming video streaming techniques and services, the expectation of users, especially the mobile phone users, for higher quality of experience is also growing swiftly. As most of the existing research focuses on traditional video streaming, the…
Pill image recognition is vital for many personal/public health-care applications and should be robust to diverse unconstrained real-world conditions. Most existing pill recognition models are limited in tackling this challenging few-shot learning problem due to the insufficient instances per catego…
High-definition 360 videos encoded in fine quality are typically too large in size to stream in its entirety over bandwidth (BW)-constrained networks. One popular remedy is to interactively extract and send a spatial sub-region corresponding to a viewer's current field-of-view (FoV) in a head-mounte…
In this paper we present a hybrid active sampling strategy for pairwise preference aggregation, which aims at recovering the underlying rating of the test candidates from sparse and noisy pairwise labeling. Our method employs Bayesian optimization framework and Bradley-Terry model to construct the u…
Error concealment (EC) is one of the target applications of inpainting techniques. Some methods combine the estimated lost motion vectors (MVs) with the exemplar-based inpainting technique to recover the lost regions. Due to the erroneous motion vectors that might indicate a moving object as backgro…
Most of the recent video compression standards employ the Discrete Cosine Transform (DCT) for transforming the residual signal in order to remove spatial correlation and to achieve higher compression efficiency. However, by careful adaptation of transforms to the video content, a better set of integ…
Model observers (MOs) have been developed for the medical image quality assessment. Nowadays, numerous modern medical instruments are capable of producing 3D images, while few researchers have conducted MO studies on 3D data. In this paper, we propose a multi-slice MO when considering a relatively m…