A5000591183- Image and Video Quality Assessment
- Video Coding and Compression Technologies
- Advanced Image Processing Techniques
- Visual Attention and Saliency Detection
- Multimedia Communication and Technology
- Virtual Reality Applications and Impacts
- Data Visualization and Analytics
- Human-Automation Interaction and Safety
- Augmented Reality Applications
- Gaze Tracking and Assistive Technology
- Geographic Information Systems Studies
- Advanced Vision and Imaging
- Scientific Computing and Data Management
- Advanced Data Compression Techniques
- Spatial Cognition and Navigation
- Urban Design and Spatial Analysis
- Image Enhancement Techniques
- Multi-Criteria Decision Making
- Color perception and design
- Chaos-based Image/Signal Encryption
- Neural and Behavioral Psychology Studies
- Digital Media Forensic Detection
- Advanced Steganography and Watermarking Techniques
Ghent University
2015-2023
iMinds
2015-2017
Content providers create different versions of a video to accommodate end-user devices and network conditions. However, each these requires resource intensive encoding process. To reduce the computational complexity encodings, this paper proposes fast simultaneous encoder. This encoder takes single as input creates number bit streams encoded with parameters. Only one version is created full encode, whereas other accelerated by exploiting correlation fully using machine learning techniques....
Every route instruction type (e.g. map, symbol, photo) induces a specific cognitive load. However, when these types are used at different decision points in building, the building configuration of also influences induced Therefore, process guidance results an interaction between and point, which determines One way reducing load during is by using adaptive systems that show points. this VR experiment, usability such indoor system tested tracking wayfinding gaze behavior users. First,...
Traditional 35mm film cameras are no longer the main devices today's consumers use to capture images. Though dominant technology has shifted digital and displays that differ widely in pixel count resolution, our understanding of quality impact these variables lags. This paper explores resolution within this new paradigm. Images were collected from 23 cameras, ranging a 1 megapixel (MP) mobile phone 20 MP single-lens reflex camera (DSLR). Subjective ratings three labs used explore...
With the introduction of 4K UHD video and display resolution, questions arise on perceptual differences between upsampled HD content. In this paper, a striped pair comparison has been performed diverse set sources. The goal was to subjectively assess perceived sharpness downscaled/upscaled video. A applied in order make test as straightforward possible for non-expert participant population. Under these conditions over sequences, average, 54.8% sequences (17 out 31), resolution content could...
Forensic watermarking is often used to enable the tracing of digital pirates that leak copyright-protected videos. However, existing methods have a limited robustness and may be vulnerable targeted attacks. Our previous work proposed fallback detection method uses secondary watermarks rather than primary embedded by methods. previously slow requires access all watermarked This paper proposes make watermark faster using perceptual hashes instead uncompressed signals. These can calculated...
The widespread usage of second screens, in combination with mobile video streaming technologies like HTTP Adaptive Streaming (HAS), enable new means for taking end-users' Quality Experience (QoE) to the next level. For sports events, these technological evolutions can, example, enhance overall engagement remote fans or give them more control over content. In this paper, we consider case adaptively multi-camera content tablet devices, enabling end-user dynamically switch cameras. Our goal is...
This paper presents a subjective image quality experiment design that specifically targets understanding consumer perception of visual quality. With this consumer-oriented goal in mind, images were captured from large number representative devices. choice is fundamentally different previous work the field, it not based on simulated software impairments, but rather naturally occurring artifacts due to device and conditions. New questions posed, which allowed exploration differences experience...
Pixel-domain techniques are too computationally complex for automatic object tracking in ultra-high resolution interactive panoramic video. Therefore, this paper proposes a fast detection method the compressed domain High Efficiency Video Coding. Evaluation shows promising results optimal sizes.
Broadcast providers are looking for new opportunities to increase user experience and interaction on their content. Their main goal is attract preserve viewer attention create a big stable audience. This could be achieved with second screen application that lets the users select own viewpoint in an extremely high resolution video direct first screen. By allowing personalized stream, they become involved content creation itself. However, encoding view each computationally complex. paper...
The Art and Science Interaction Lab (ASIL) is a unique, highly flexible modular interaction science research facility to effectively bring, analyse test experiences interactions in mixed virtual/augmented contexts as well conduct on next-gen immersive technologies. It brings together the expertise creativity of engineers, performers, designers scientists creating solutions shaping lives people. lab equipped with state-of-the-art visual, auditory user-tracking equipment, fully synchronized...