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Air-writing is the process of writing characters or words in free space using finger or hand movements without the aid of any hand-held device. In this work, we address the problem of mid-air finger writing using web-cam video as input. In…

Computer Vision and Pattern Recognition · Computer Science 2019-07-01 Sohom Mukherjee , Arif Ahmed , Debi Prosad Dogra , Samarjit Kar , Partha Pratim Roy

Air-writing refers to virtually writing linguistic characters through hand gestures in three-dimensional space with six degrees of freedom. This paper proposes a generic video camera-aided convolutional neural network (CNN) based…

Computer Vision and Pattern Recognition · Computer Science 2025-02-19 Prasun Roy , Subhankar Ghosh , Umapada Pal

In this paper, we introduce a new benchmark dataset for the challenging writing in the air (WiTA) task -- an elaborate task bridging vision and NLP. WiTA implements an intuitive and natural writing method with finger movement for…

Computer Vision and Pattern Recognition · Computer Science 2021-04-20 Ue-Hwan Kim , Yewon Hwang , Sun-Kyung Lee , Jong-Hwan Kim

This paper presents a novel approach, called AirScript, for creating, recognizing and visualizing documents in air. We present a novel algorithm, called 2-DifViz, that converts the hand movements in air (captured by a Myo-armband worn by a…

This paper presents a real time video based pointing method which allows sketching and writing of English text over air in front of mobile camera. Proposed method have two main tasks: first it track the colored finger tip in the video…

Multimedia · Computer Science 2016-04-29 Saira Beg , M. Fahad Khan , Faisal Baig

Hand gestures are an intuitive, socially acceptable, and a non-intrusive interaction modality in Mixed Reality (MR) and smartphone based applications. Unlike speech interfaces, they tend to perform well even in shared and public spaces.…

Human-Computer Interaction · Computer Science 2019-04-15 Varun Jain , Ramya Hebbalaguppe

The recent advancement in technology breaks the barriers to communication between users and computers. The communication between humans and computers includes emotion and gesture recognition. Emotions can be recognized on the face of humans…

Human-Computer Interaction · Computer Science 2023-06-08 Heena , Sandeep Ranjan

Illustration is a fundamental mode of human expression and communication. Certain types of motion that accompany speech can provide this illustrative mode of communication. While Augmented and Virtual Reality technologies (AR/VR) have…

Computer Vision and Pattern Recognition · Computer Science 2025-07-01 Hui Xian Grace Lim , Xuanming Cui , Yogesh S Rawat , Ser-Nam Lim

Airwriting Recognition is the problem of identifying letters written in free space with finger movement. It is essentially a specialized case of gesture recognition, wherein the vocabulary of gestures corresponds to letters as in a…

Human-Computer Interaction · Computer Science 2022-11-02 Ayush Tripathi , Arnab Kumar Mondal , Lalan Kumar , Prathosh A. P

Handwritten character recognition (HCR) is a challenging problem for machine learning researchers. Unlike printed text data, handwritten character datasets have more variation due to human-introduced bias. With numerous unique character…

Computer Vision and Pattern Recognition · Computer Science 2024-03-28 Boris Kriuk , Fedor Kriuk

In this paper, we propose a novel approach for air drawing that uses image processing techniques to draw on the screen by moving fingers in the air. This approach benefits a wide range of applications such as sign language, in-air drawing,…

Computer Vision and Pattern Recognition · Computer Science 2025-03-04 Ramkrishna Acharya

This paper presents a novel approach to the digital signing of electronic documents through the use of a camera-based interaction system, single-finger tracking for sign recognition, and multi commands executing hand gestures. The proposed…

Computer Vision and Pattern Recognition · Computer Science 2024-05-20 P. Sarveswarasarma , T. Sathulakjan , V. J. V. Godfrey , Thanuja D. Ambegoda

We introduce AirLetters, a new video dataset consisting of real-world videos of human-generated, articulated motions. Specifically, our dataset requires a vision model to predict letters that humans draw in the air. Unlike existing video…

Computer Vision and Pattern Recognition · Computer Science 2024-10-07 Rishit Dagli , Guillaume Berger , Joanna Materzynska , Ingo Bax , Roland Memisevic

Writing assistance is an application closely related to human life and is also a fundamental Natural Language Processing (NLP) research field. Its aim is to improve the correctness and quality of input texts, with character checking being…

Computation and Language · Computer Science 2023-11-21 Yinghui Li , Zishan Xu , Shaoshen Chen , Haojing Huang , Yangning Li , Yong Jiang , Zhongli Li , Qingyu Zhou , Hai-Tao Zheng , Ying Shen

This paper introduces FGVC-Aircraft, a new dataset containing 10,000 images of aircraft spanning 100 aircraft models, organised in a three-level hierarchy. At the finer level, differences between models are often subtle but always visually…

Computer Vision and Pattern Recognition · Computer Science 2013-06-24 Subhransu Maji , Esa Rahtu , Juho Kannala , Matthew Blaschko , Andrea Vedaldi

Remote Sensing Image Change Captioning (RSICC) aims to generate spatially grounded natural language descriptions of scene evolution from bi-temporal imagery, moving beyond binary change masks toward semantic-level understanding. However,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-07 Yupeng Gao , Tianyu Li , Guoqing Wang , Yang Yang

Gesture recognition presents a promising avenue for interfacing with unmanned aerial vehicles (UAVs) due to its intuitive nature and potential for precise interaction. This research conducts a comprehensive comparative analysis of…

Robotics · Computer Science 2025-05-26 Sousannah Abdalla , Sabur Baidya

Airwriting Recognition refers to the problem of identification of letters written in space with movement of the finger. It can be seen as a special case of dynamic gesture recognition wherein the set of gestures are letters in a particular…

Human-Computer Interaction · Computer Science 2023-03-21 Ayush Tripathi , Prathosh AP , Suriya Prakash Muthukrishnan , Lalan Kumar

Current UAV-recorded datasets are mostly limited to action recognition and object tracking, whereas the gesture signals datasets were mostly recorded in indoor spaces. Currently, there is no outdoor recorded public video dataset for UAV…

Machine Learning · Computer Science 2019-01-10 Asanka G Perera , Yee Wei Law , Javaan Chahl

Modern avatar generators allow anyone to synthesize photorealistic real-time talking avatars, ushering in a new era of avatar-based human communication, such as with immersive AR/VR interactions or videoconferencing with limited bandwidths.…

Computer Vision and Pattern Recognition · Computer Science 2024-08-06 Ekta Prashnani , Koki Nagano , Shalini De Mello , David Luebke , Orazio Gallo
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