arXiv Machine Learning

Sequence Recognition in Bharatnatyam dance

The paper presents a method for recognizing sequences of key postures and motions in Bharatanatyam Adavus using a CNN for key postures (99% accuracy) and an SVM for motions (84% accuracy). It then matches these sequences to ground truth with an Edit Distance algorithm, achieving 98% accuracy. The study claims novelty by considering both postures and motions, measuring prediction time, and testing scalability across all 15 Adavus and 58 variations.

arXiv Computation and Language
2d ago

Maswao: An automatically collected, prepared, and benchmarked dataset for South African Sign Language

The paper introduces Maswao, a dataset of South African Sign Language (SASL) created through automated collection and preparation of video content from public sources, minimal human labor, and weak sentence alignment using audio-to-text ASR and motion analysis. The authors benchmark the dataset on sign‑to‑text translation, showing Transformer models outperform recurrent baselines with BLEU‑1 to BLEU‑4 scores ranging from 13.78 to 1.54. The study highlights the potential of automated dataset creation for under‑represented sign languages and demonstrates promising translation results that encourage further research.

By Thapelo Sindane, Unarine Netshifhefhe, Vukosi Marivate, Abiodun Modupe, Herkulaas Combrink, Ketro Sithole
arXiv Computation and Language
Nov 4

Maswao: An automatically collected, prepared, and benchmarked dataset for the South African Sign language

The paper introduces Maswao, a new dataset for South African Sign Language (SASL) created through automated collection and preparation of video content from public sources. The authors convert accompanying audio to text, crop sign regions, and use gradient descent to segment sentences, producing weakly sentence-aligned parallel corpora. They benchmark this dataset on sign-to-text translation, showing Transformer models outperform recurrent baselines with BLEU-1 to BLEU-4 scores up to 13.78, 5.21, 2.52, and 1.54, respectively.

By Thapelo Sindane, Unarine Netshifhefhe, Vukosi Marivate, Abiodun Modupe, Herkulaas Combrink, Ketro Sithole
arXiv Computer Vision
Sep 4

Mudragen: Geometrically Supervised Generation of Interacting Two-Hand Mudras for Preserving Indian Classical Dance Heritage

MudraGen is a conditional diffusion framework that generates realistic RGB images of Samyukta Hasta mudras, the two‑hand gestures used in Bharatanatyam. It introduces geometry‑aware supervision through three objectives—Keypoint Loss, Joint Offset Loss, and Shape Consistency—to ensure anatomical validity, inter‑hand coordination, and cultural nuance. The model outperforms existing generative approaches in visual realism, anatomical correctness, and fine hand‑pose structure, enabling faithful reproduction of complex mudras.

By Jagadish Kashinath Kamble, Jayanta Mukhopadhyay, Debaditya Roy, Partha Pratim Das
arXiv Computation and Language
Oct 19

DINO Eats Geometry: Self-Supervised Sign Representations that Absorb Articulated Hand Geometry

SignDEG (DINO Eats Geometry) is a temporal sign language encoder that incorporates articulated hand geometry as a pre‑training target while using only video at inference. It leverages frozen DINOv3 features of tracked hands and faces, feeding them into per‑stream temporal Transformers, and introduces two geometric objectives—Geometric Latent Prediction (GLP) and Geometric Relation Transfer (GRT)—to supervise intermediate and final blocks. Jointly trained with temporal self‑distillation, SignDEG achieves higher BLEU‑4 scores on How2Sign/OpenASL and improves recall on ASL Citizen and Sem‑Lex datasets compared to SHuBERT, demonstrating that articulated structure can be transferred into an appearance encoder without requiring a hand reconstruction model at deployment.

By Junyi Hu, Zhewen He, Haomian Huang, Zhenhua Li, Zhifei Li, Shuaihang Yuan, Yi Fang
arXiv Computer Vision
Sep 2

Beyond Landmark Extraction: A Framework for Robust Geometric Feature Construction in Structured Image Classification

The paper argues that in structured image classification, the key question is what information a classifier should receive before making a prediction, rather than which algorithm performs best. It proposes a systematic framework for constructing landmark-derived representations—such as coordinate, distance, angle, and hybrid features—and evaluates them on static hand gesture recognition. Experiments show that hybrid representations, which combine complementary geometric components, outperform raw coordinate features and other single-type representations, highlighting the importance of thoughtful feature construction.

By Saravana Mauree, Sakshi Arya