Goto

Collaborating Authors

 Media


Fish2Mesh Transformer: 3D Human Mesh Recovery from Egocentric Vision

arXiv.org Artificial Intelligence

Egocentric human body estimation allows for the inference of user body pose and shape from a wearable camera's first-person perspective. Although research has used pose estimation techniques to overcome self-occlusions and image distortions caused by head-mounted fisheye images, similar advances in 3D human mesh recovery (HMR) techniques have been limited. We introduce Fish2Mesh, a fisheye-aware transformer-based model designed for 3D egocentric human mesh recovery. We propose an egocentric position embedding block to generate an ego-specific position table for the Swin Transformer to reduce fisheye image distortion. Our model utilizes multi-task heads for SMPL parametric regression and camera translations, estimating 3D and 2D joints as auxiliary loss to support model training. To address the scarcity of egocentric camera data, we create a training dataset by employing the pre-trained 4D-Human model and third-person cameras for weak supervision. Our experiments demonstrate that Fish2Mesh outperforms previous state-of-the-art 3D HMR models.


Revealed: The 8 new emoji officially coming to your iPhone - including one face that EVERYONE will use

Daily Mail - Science & tech

Whether it's a cheeky wink or a grinning cowboy, it might seem like there is already an emoji for every possible situation. But amazingly, there are now even more designs on the way. Apple has revealed eight new emojis that are officially coming to iPhones as part of the iOS 18.4 update. While they are only available in'beta' for now, these new symbols should be rolling out to everyone when the full update is released in late March or early April. In the update, users will be able to send a colourful fingerprint, bright purple splat, or the flag of the island of Sark.


Best Sonos Speakers (2025): Soundbars, Turntables, and More

WIRED

After flooding our homes with every Sonos model you can buy (and filling all remaining space with the boxes of said speakers), then using them for a couple of years, we've come to value their audio fidelity and ability to network seamlessly together. There isn't another speaker system that lets you string together multiple speakers as easily or connect them to stream in different rooms of your home while keeping the audio perfectly in sync. The closest thing may be Google Assistant speakers, and Sonos connects to that system as well. Easy streaming: The Sonos app supports almost every streaming service in existence, and many apps, like Spotify, let you stream to Sonos speakers within them. The Sonos ecosystem can also handle home-theater applications and can support a full surround-sound setup.


'The Brutalist' producer defends Oscar-winning movie's use of artificial intelligence after controversy

FOX News

'Beetlejuice Beetlejuice' star Justin Theroux tells Fox News Digital his thoughts on artificial intelligence and how it will impact future Hollywood films. A producer for the Oscar-winning film, "The Brutalist," is defending the production's use of artificial intelligence. D.J. Gugenheim, one of several producers involved in the film, spoke with Deadline at the Oscars on Sunday night, saying the technology is simply a tool. "If you're in post [-production] on a film, there's so many tools that you use, whether it's lighting, sound, and these are all versions of functions of numbers," he told the outlet. "What's important about how we're making a film is that we're trusting the actors and the creatives and the talent to make a film. So, if no one is losing a job, and you're making the best version of the product, that's when you're using a tool."


DropletVideo: A Dataset and Approach to Explore Integral Spatio-Temporal Consistent Video Generation

arXiv.org Artificial Intelligence

Spatio-temporal consistency is a critical research topic in video generation. A qualified generated video segment must ensure plot plausibility and coherence while maintaining visual consistency of objects and scenes across varying viewpoints. Prior research, especially in open-source projects, primarily focuses on either temporal or spatial consistency, or their basic combination, such as appending a description of a camera movement after a prompt without constraining the outcomes of this movement. However, camera movement may introduce new objects to the scene or eliminate existing ones, thereby overlaying and affecting the preceding narrative. Especially in videos with numerous camera movements, the interplay between multiple plots becomes increasingly complex. This paper introduces and examines integral spatio-temporal consistency, considering the synergy between plot progression and camera techniques, and the long-term impact of prior content on subsequent generation. Our research encompasses dataset construction through to the development of the model. Initially, we constructed a DropletVideo-10M dataset, which comprises 10 million videos featuring dynamic camera motion and object actions. Each video is annotated with an average caption of 206 words, detailing various camera movements and plot developments. Following this, we developed and trained the DropletVideo model, which excels in preserving spatio-temporal coherence during video generation. The DropletVideo dataset and model are accessible at https://dropletx.github.io.


Constructions are Revealed in Word Distributions

arXiv.org Artificial Intelligence

Construction grammar posits that constructions (form-meaning pairings) are acquired through experience with language (the distributional learning hypothesis). But how much information about constructions does this distribution actually contain? Corpus-based analyses provide some answers, but text alone cannot answer counterfactual questions about what caused a particular word to occur. For that, we need computable models of the distribution over strings -- namely, pretrained language models (PLMs). Here we treat a RoBERTa model as a proxy for this distribution and hypothesize that constructions will be revealed within it as patterns of statistical affinity. We support this hypothesis experimentally: many constructions are robustly distinguished, including (i) hard cases where semantically distinct constructions are superficially similar, as well as (ii) schematic constructions, whose "slots" can be filled by abstract word classes. Despite this success, we also provide qualitative evidence that statistical affinity alone may be insufficient to identify all constructions from text. Thus, statistical affinity is likely an important, but partial, signal available to learners.


Audio-to-Image Encoding for Improved Voice Characteristic Detection Using Deep Convolutional Neural Networks

arXiv.org Artificial Intelligence

This paper introduces a novel audio-to-image encoding framework that integrates multiple dimensions of voice characteristics into a single RGB image for speaker recognition. In this method, the green channel encodes raw audio data, the red channel embeds statistical descriptors of the voice signal (including key metrics such as median and mean values for fundamental frequency, spectral centroid, bandwidth, rolloff, zero-crossing rate, MFCCs, RMS energy, spectral flatness, spectral contrast, chroma, and harmonic-to-noise ratio), and the blue channel comprises subframes representing these features in a spatially organized format. A deep convolutional neural network trained on these composite images achieves 98% accuracy in speaker classification across two speakers, suggesting that this integrated multi-channel representation can provide a more discriminative input for voice recognition tasks.


Evaluating open-source Large Language Models for automated fact-checking

arXiv.org Artificial Intelligence

The increasing prevalence of online misinformation has heightened the demand for automated fact-checking solutions. Large Language Models (LLMs) have emerged as potential tools for assisting in this task, but their effectiveness remains uncertain. This study evaluates the fact-checking capabilities of various open-source LLMs, focusing on their ability to assess claims with different levels of contextual information. We conduct three key experiments: (1) evaluating whether LLMs can identify the semantic relationship between a claim and a fact-checking article, (2) assessing models' accuracy in verifying claims when given a related fact-checking article, and (3) testing LLMs' fact-checking abilities when leveraging data from external knowledge sources such as Google and Wikipedia. Our results indicate that LLMs perform well in identifying claim-article connections and verifying fact-checked stories but struggle with confirming factual news, where they are outperformed by traditional fine-tuned models such as RoBERTa. Additionally, the introduction of external knowledge does not significantly enhance LLMs' performance, calling for more tailored approaches. Our findings highlight both the potential and limitations of LLMs in automated fact-checking, emphasizing the need for further refinements before they can reliably replace human fact-checkers.


Cognitive Bias Detection Using Advanced Prompt Engineering

arXiv.org Artificial Intelligence

Cognitive biases, systematic deviations from rationality in judgment, pose significant challenges in generating objective content. This paper introduces a novel approach for real-time cognitive bias detection in user-generated text using large language models (LLMs) and advanced prompt engineering techniques. The proposed system analyzes textual data to identify common cognitive biases such as confirmation bias, circular reasoning, and hidden assumption. By designing tailored prompts, the system effectively leverages LLMs' capabilities to both recognize and mitigate these biases, improving the quality of human-generated content (e.g., news, media, reports). Experimental results demonstrate the high accuracy of our approach in identifying cognitive biases, offering a valuable tool for enhancing content objectivity and reducing the risks of biased decisionmaking. Introduction Cognitive biases are systematic patterns of deviation from rational judgment, affecting decision-making processes across various domains, including media, policy-making, and legal reasoning. With the rapid expansion of artificial intelligence (AI) applications, large language models (LLMs) have demonstrated significant potential in processing and evaluating vast amounts of textual information. However, existing research has largely focused on mitigating biases within AI-generated outputs rather than leveraging AI to detect biases in human-generated content. This gap presents a critical challenge in ensuring transparency and fairness in AI-assisted decision-making. This study explores the application of structured prompt engineering as a novel approach to improving LLM accuracy in detecting cognitive biases.


Noise-Robust Radio Frequency Fingerprint Identification Using Denoise Diffusion Model

arXiv.org Artificial Intelligence

Securing Internet of Things (IoT) devices presents increasing challenges due to their limited computational and energy resources. Radio Frequency Fingerprint Identification (RFFI) emerges as a promising authentication technique to identify wireless devices through hardware impairments. RFFI performance under low signal-to-noise ratio (SNR) scenarios is significantly degraded because the minute hardware features can be easily swamped in noise. In this paper, we leveraged the diffusion model to effectively restore the RFF under low SNR scenarios. Specifically, we trained a powerful noise predictor and tailored a noise removal algorithm to effectively reduce the noise level in the received signal and restore the device fingerprints. We used Wi-Fi as a case study and created a testbed involving 6 commercial off-the-shelf Wi-Fi dongles and a USRP N210 software-defined radio (SDR) platform. We conducted experimental evaluations on various SNR scenarios. The experimental results show that the proposed algorithm can improve the classification accuracy by up to 34.9%.