Static gestures of Indian Sign Language (ISL) for English Alphabet, Hindi Vowels and Numerals

This dataset consists of static hand gestures and lips movement for each character in the English alphabet, eight Hindi Vowels and ten Numerals as represented in Indian sign language (ISL). The dataset consists of 1,02,470 images of subjects from different age groups presenting static gestures under varied backgrounds and illumination conditions. The dataset is structured into three folders namely Kids, Teenagers and Adults. Each folder consists of sub-folders namely Full Sleeves and Half Sleeves indicating the type of clothing that the subject has worn at the time of image acquisition. In each sub-folders, images for the English alphabet, Hindi Vowels and Numerals are stored respectively in the sub-folders named with that specific character. However, for the English alphabet 'E' and Numeral '9' we have captured two different signs for each (that are used interchangeably), and it is contained in the folder namely E1 and E2 for alphabet 'E' and 9a and 9b for Numeral '9'. For the English alphabet, wherever a character is represented by a dynamic sign, the last frame of the sign is captured. For example, this is typically a case with English characters like 'J', 'H' and 'Y'. The images are stored in .jpeg format and have resolutions varying from 300 x 500 to 800 x 600, and the size is less than 100KB. The dataset is captured by a team pursuing research at Chandigarh College of Engineering and Technology, Chandigarh. The subjects have been informed about the research and Informed Participant Consent has been obtained prior to image acquisition. This dataset can be used only for research purposes either as it is or after cropping the static gestures from the image after duly referencing it. Any other use of the dataset is strictly prohibited and any illegal use is subject to the Indian court of law.

本数据集包含印度手语（Indian Sign Language, ISL）中所表示的英文字母表每个字符、8个印地语元音及10个数字对应的静态手势与唇部动作。数据集包含102,470张图像，受试者来自不同年龄组，在不同背景与光照条件下呈现静态手势。

数据集结构分为三个文件夹，即Kids（儿童）、Teenagers（青少年）和Adults（成人）。每个文件夹包含子文件夹Full Sleeves（长袖）和Half Sleeves（短袖），指示受试者图像采集时所穿衣物类型。在每个子文件夹中，英文字母、印地语元音及数字的图像分别存储于以对应字符命名的子文件夹内。然而，对于英文字母'E'和数字'9'，我们分别采集了两种可互换使用的不同手势，对应存储于文件夹E1与E2（字母'E'）、9a与9b（数字'9'）中。

对于英文字母中以动态手势表示的字符，我们采集其手势的最后一帧图像。例如，英文字母'J'、'H'和'Y'通常属于此类情况。

图像以JPEG格式存储，分辨率范围为300×500至800×600，单张大小均小于100KB。

本数据集由昌迪加尔工程技术学院（Chandigarh College of Engineering and Technology, Chandigarh）的研究团队采集。受试者已被告知研究相关信息，且在图像采集前已获得知情参与者同意（Informed Participant Consent）。

本数据集仅可用于研究目的，可直接使用或在适当引用后从图像中裁剪静态手势使用。任何其他用途均严格禁止，非法使用将受印度法院法律制裁。