Key concepts

the words used throughout the task view and this guide skim it once — and come back whenever a term is unclear task tasks are created in each of the request's workflow stages and become available for team members to complete the most common task actions are annotate, correct, and review annotate — a task assigned with the purpose of being annotated from scratch correct — a task where you are asked to correct existing annotations, based on the feedback from a review the annotation can be from someone else or your own review — a task where you determine if an annotation is of acceptable quality if not, you provide correction requests and feedback so the annotator can fix the issues and improve a workflow stage describes where a task sits in the production flow guideline each project comes with its own guideline it describes what to annotate, how to annotate it, and gives visual examples of how to interpret the instructions open it from the top menu bar help → task guideline scene, frames, and sequences term meaning scene the data being annotated camera images and/or a point cloud, in one or many frames frame one time step of a sequence sequence a scene with multiple frames over time keyframe a frame where an object's position or properties are explicitly set; frames in between are interpolated ego vehicle the recording vehicle — the anchor for grids, trajectories, and the bird's eye view sensor a data source on the recording rig lidar, radar, or camera camera source one camera feed shown in the 2d view aggregation combining point clouds from multiple frames into the current frame classes, shapes, objects, and properties term meaning class an annotation type available in your task you select a class in the create tab and draw it as a shape, or paint it as 3d point classification shape the geometry of an annotation 2d box, polygon, 3d box, line, point, … object a unique object in the world one object can be annotated with several shapes, across sensors and frames, and has a unique object id shown in the object list property a value set on an object (for example occlusion), via the edit tab or quick properties geometry collection a grouping of several geometries that belong to one object 3d point classification labelling the point cloud point by point, instead of drawing shapes projection a shape created in one source and visualized in another (for example a 3d box outlined in the camera image) class, shape, or object? the class is what you can annotate, the shape is the drawn geometry, and the object is the annotated instance one object may consist of several shapes prelabels and predictions prelabel — a pre existing annotation that is delivered with the task, produced upstream prediction — a model suggestion generated while you annotate (copilot, auto complete, tracking) feedback in review tasks, reviewers send feedback to annotators correction request — something that must be fixed before the task can pass advice — an optional suggestion; nothing blocks on it error type — the category a correction request is filed under task validation programmatic checks that must pass before you can submit a task when configured, a validate button replaces submit until the task passes the parts of the screen name what it is task view the whole working ui top menu bar the general / edit / view / class/objects / window / help menus at the top toolbar the tool strip on the left side right side menu the panel with the create tab and the edit tab create tab / edit tab the two tabs of the right side menu pick a class and draw vs manage objects and properties feedback sidebar the feedback list panel in review and correction tasks video bar the bar at the bottom of sequence tasks, with keyframes and property values modes action bar the node cycling bar shown for 3d lines and lanes radial menu the quick settings wheel in the 3d view context menu the right click menu on objects camera drawer the multi camera strip object cameras the top / right / back views of the selected 3d object 2d miniature image the mini camera image in the corner of the 3d view keybindings window where you remap shortcuts edit → keybindings inbox the notification inbox easily confused region of interest vs temporary region of interest — the region your task is configured to cover vs a drawing tool that temporarily hides points locate unlabelled areas (2d vs 3d) — two different tools sharing one name in 2d segmentation it highlights unlabelled gaps in the image; in 3d point classification it hides labelled points workflows vs automation — guided multi step flows (like the static objects workflow) vs single action assists (like auto adjust) keybinding vs shortcut — the remappable binding you set in the keybindings window vs the generic concept; a few shortcuts are hardcoded and cannot be remapped