Glossary

Term	Description
Attribute	Vehicle or LP parameter: brand, model, color, LP number, etc.
Base64	A standard for encoding binary data (in the context of the CARS API – images) using 64 ASCII characters.
Bestshot	The best shot of an object (car, smoke/fire, or animal).
Bounding box (BBox)	A rectangle that bounds the image space containing a detected object (vehicle, LP, pedestrian, animal).
CARS Analytics	Subsystem for collecting, storing, and displaying the results of the CARS API and CARS Stream operations via a web interface.
CARS API	Subsystem for detection and recognition of vehicle and LP attributes on images in real-time.
CARS Stream	Subsystem for detecting and tracking vehicles, LPs, pedestrians, and animals in the video stream and determining the best frames.
Classifier	An object in the CARS API subsystem that recognizes one of the attributes of a vehicle or LP.
Crop	An object cut from a fullframe (car, smoke/fire, or animal).
Detection	The process of identifying areas of the image containing vehicles or LPs.
Detector	An algorithm for identifying areas in the image that contain vehicles or LPs.
Exchangeable Image File Format (EXIF)	A standard that allows users to add additional information (metadata) to images, commenting on this file, describing the conditions and methods of obtaining it, authorship, etc.
False Positive Detection	A detection result where an object that is not a vehicle or LP is incorrectly identified as a vehicle or LP.
False Negative Detection	A detection result where a vehicle or LP is not detected or identified as a vehicle or LP.
Foreground subtraction (FGS)	A technology that subtracts the background of an image and processes only the region with moving objects. It is used to improve the performance of the system.
Full frame	Full frame from the camera.
Inference	Image processing by the neural network and generation of results: detection coordinates and the probability that the detection is an object of interest (vehicle, LP, smoke, fire, pedestrian, or animal).
Intersection Over Union (IOU)	Parameter determines the coefficient of intersection of two detections.
License Plate (LP)	An individual alphanumeric designation assigned to a vehicle by a registration authority.
LUNA CARS	A system designed for detection, tracking, and recognition of vehicle and LP attributes. The system consists of three subsystems: CARS Analytics, CARS API, and CARS Stream.
Nginx	A load balancer that distributes requests and responses between running instances of the CARS API and external systems.
Non-Maximum Suppression (NMS)	An algorithm for determining the boundaries of objects in an image.
Object	An item of interest for the system within the processes of detection, re-detection, and tracking: vehicle, license plate, smoke, fire, pedestrian, or animal.
Real Time Streaming Protocol (RTSP)	A transport-layer data transfer protocol in connectionless networks that provides the delivery of datagrams without requiring confirmation of their receipt.
Redetection	The process of re-identifying areas of an image containing vehicles or LPs.
Reidentification	Repeated action to identify an object in order to «glue» the broken tracks of the same object into one.
Track	Information about the position of a vehicle and LP across a sequence of frames.
TrackEnd	Event about the end of tracking an object (car, smoke/fire, or animal).
Tracking	The process of obtaining information about the position of a vehicle or LP across a sequence of frames.
Transmission Control Protocol (TCP)	A real-time streaming protocol that contains a simple set of basic commands for controlling the video stream.
Vehicle	A mechanical device used for transporting people and/or goods, which requires a special right to operate.
User Datagram Protocol (UDP)	A transport-layer data transfer protocol in connectionless networks that provides the delivery of datagrams without requiring confirmation of their receipt.