3. Design Overview¶

3.1. System Architecture¶

The following is the TDL SDK system architecture diagram; The TDL SDK architecture is on Cvitek’s Middleware and TPU SDK.

It is mainly divided into three modules: Core, Service and Application.

Core mainly provides algorithm-related interfaces, encapsulating complex underlying operations and algorithm details.

Users can directly use the Video Frame Buffer obtained by VI or VPSS for model reasoning.

TDL SDK will conduct corresponding pre and post processing on the model and complete reasoning.

Service provides algorithmic auxiliary apis, such as mapping, feature comparison, and area intrusion determination.

Application Encapsulates the application logic, including the face capture application logic.

Fig. 3.1 Figure 1.¶

The three modules are placed in two libraries:

Module	Dynamic Library	Static Library
Core, Service	libcvi_tdl.so	libcvi_tdl.a
Application	libcvi_tdl_app.so	libcvi_tdl_app.a

The directory structure of TDL SDK is as follows:

Directory Name	Description
include	TDL SDK headers
sample	Sample source code
doc	Markdown-formatted document
lib	TDL SDK static and dynamic libraries
bin	TDL SDK binary file