Tracing

Computer graphics

Image tracing, digital image processing to convert raster graphics into vector graphics
Path tracing, a method of rendering images of three-dimensional scenes such that the global illumination is faithful to reality
Ray tracing (graphics), techniques in computer graphics
Boundary tracing (also known as contour tracing), a segmentation technique that identifies the boundary pixels of the digital region

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Other uses

Tracing (art), copying an object or drawing, especially with the use of translucent tracing paper
Tracing (criminology), determining crime scene activity from trace evidence left at crime scenes
Tracing (law), a legal process by which a claimant demonstrates what has happened to their property
Anterograde tracing, and Retrograde tracing, biological research techniques used to map the connections of neurons
Call tracing, a procedure that permits an entitled user to be informed about the routing of data for an established connection
Family Tracing and Reunification, a process whereby disaster response teams locate separated family members
Tracking and tracing, a process of monitoring the location and status of property in transit
Curve tracing, a method for analyzing the characteristics of semiconductors; see Semiconductor curve tracer
Tracing (as with a gun or camera), tracking an object, as with the use of tracer ammunition
Contact tracing, finding and identifying people in contact with someone with an infectious disease

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Mathematics