Glossary
Searchable terminology from accessibility, web standards, and related fields.
81 results found in computer vision.
- Speaker Segmentation (Person Segmentation, Human Segmentation)
- The process of identifying and isolating the speaker or presenter in a video frame, separating them from the background and other visual elements. Speaker segmentation uses computer vision models to c…
- Teachable Object Recognition (Teachable Object Recognizer, TOR, Personalized Object Recognition)
- A machine learning approach that allows users to train an object recognition system to identify their own personal items by providing a small number of training examples, typically photos or videos. T…
- Teachable Object Recognizer (Teachable Machine, Personalized Object Recognizer)
- A machine learning application that allows end users to train custom object recognition models by providing their own example images, rather than relying on pre-trained models with fixed categories. I…
- Text Spotting (Scene Text Detection)
- A computer vision technique that detects and localizes text within images in real time, without actually performing OCR recognition. Text spotting algorithms identify where text appears in a camera fr…
- Time-Causal Model (Temporal Causal Model, Sequential Logic Model)
- A computational model that enforces temporal coherence in predictions by ensuring that the sequence of recognized events follows a logical causal order. In recipe tracking, a time-causal model prevent…
- Transfer Learning
- A machine learning technique where a model trained on a large general dataset is adapted to perform a new, more specific task using a much smaller amount of new training data. Rather than training a m…
- UI Detection (User Interface Detection, GUI Element Detection)
- The use of computer vision and machine learning to automatically identify and classify user interface elements (buttons, text fields, icons, toggles, etc.) from screenshots or screen pixels. In access…
- Video Inpainting (Video Fill, Content-Aware Video Fill)
- A computer vision technique that fills in removed or missing regions of a video frame with plausible content generated based on surrounding visual information. Video inpainting is used in accessibilit…
- Video Segmentation (Scene Segmentation, Video Scene Detection)
- The process of dividing a video into meaningful segments or scenes based on visual changes, content shifts, or thematic transitions. Video segmentation enables granular customization and navigation, a…
- Visual Dialogue (Visual Dialog, VisDial)
- Visual dialogue is an AI task that involves holding a multi-turn natural language conversation about visual content such as an image or video frame. Unlike single-turn visual question answering (VQA),…
- Visual Document Understanding (VDU, Document Understanding)
- A field of AI research focused on the interpretation and analysis of visually-rich digital documents such as forms, tables, menus, reports, receipts, and academic papers. Visual document understanding…
- Visual Grounding (Grounded Visual Understanding)
- The ability of an AI model to connect its language output to specific elements actually present in the visual input, ensuring that descriptions and responses are anchored to real objects and scenes ra…
- Visual Inertial Odometry (VIO)
- A motion tracking technique that combines camera-based visual tracking with inertial sensor data (gyroscopes and accelerometers) to estimate a device’s position and orientation in 3D space with high a…
- Visual Interpreter (Visual Interpreter Service, Visual Description Service, VIDS, Remote Sighted Assistance)
- A visual interpreter or description service (VIDS) is a technology or human-powered service that provides people who are blind or have low vision with descriptions of their visual surroundings, typica…
- Visual Language Model (VLM, Vision-Language Model)
- AI models that can process and reason about both visual and textual information, combining computer vision with large language model capabilities. VLMs could potentially enhance assessment descriptors…
- Visual Layout Analysis (Layout Analysis, Document Layout Analysis)
- The automated process of examining the spatial arrangement and visual properties of elements within a document to infer meaningful structural relationships between them. In accessibility contexts, vis…
- Visual Question Answering (VQA)
- A task in which a system receives an image and a natural language question about that image, then generates a natural language answer. VQA emerged as a key accessibility paradigm through services like…
- Visual Saliency (Saliency Detection, Visual Attention Prediction)
- A computer vision concept referring to the degree to which visual elements attract attention compared to their surroundings. Saliency detection models predict which parts of an image or video frame wi…
- Visual question answering (VQA, Visual QA)
- A computer vision and natural language processing task in which a system answers natural language questions about the content of an image or video. In accessibility contexts, VQA enables blind and vis…
- Wearable Camera (Body-worn Camera, Head-mounted Camera, Egocentric Camera)
- A camera worn on the body — typically mounted on glasses, a hat, or the chest — that captures images or video from the wearer's perspective (egocentric view). In assistive technology for blind and low…