Tech.us provides an end-to-end Data Annotation Services to drive precise and productive AI/ML models. They convert raw and unstructured data, such as text, audio, image, video and multimodal data, into clean and labeled data by annotating them manually. There are text annotation (sentiment, semantics, intent) and image/video labelling (object detection, facial features, dynamic scenes... https://tech.us/services/data-annotation-services