ContextCapture REST API, is a service that turns images and point clouds into reality meshes, orthophotos and other by-products.
ContextCapture is articulated around workspaces and jobs. A ContextCapture workspace is a way to regroup similar jobs, and create gateways between jobs. A ContextCapture job is a job using basic reality data inputs (Images, point clouds) to create specified outputs (meshes, orthophotos, point clouds, orientations). Note that in order to use ContextCapture, you need to already know about RealityData API (also known as ProjectWise ContextShare) in order to upload and download data.