Configure the Simulink Environment for HDL Video Processing
About Simulink Model Templates
Simulink® model templates provide common configuration settings and best practices for new models. Instead of the default canvas of a new model, select a template model to help you get started.
Create Model Using Vision HDL Toolbox Model Template
To use the Vision HDL Toolbox™ model template:
Click the Simulink button, , or type
simulinkat the MATLAB® command prompt.
On the Simulink start page, find the Vision HDL Toolbox section, and click the Basic Model template.
A new model, with the template contents and settings, opens in the Simulink Editor. Click Save to save the model.
You can also create a new model from the template on the command line.
new_system my_visionhdl_model FromTemplate visionhdl_basic.sltx open_system my_visionhdl_model
Vision HDL Toolbox Model Template
Basic Model Template
The Vision HDL Toolbox Basic Model template includes the following features:
Blocks to convert framed video data to a pixel stream, and to convert the output pixel stream back to full-frame video
An empty behavioral model subsystem
An empty HDL-targeted subsystem
Display blocks to compare the results of the two subsystems
Delay blocks on the input and behavioral model data paths. These delays match the one-frame delay introduced by the Pixels To Frame conversion on the HDL model data path.
This template also configures the model for HDL code generation.
This template uses the Video Source and Video Viewer blocks from Computer Vision Toolbox™.
Due to serial processing, Vision HDL Toolbox simulation can be time-consuming for large images. You can work around
this limitation by designing and debugging with a small image, and then increasing
the size before final testing and HDL code generation. The pixel stream control
signals allow most blocks, except for those for frame and pixel conversion, to be
independent of image size. To change image size, modify the Frame To
Pixels and Pixels To Frame block parameters only. To
simplify a size change, use variables for custom-size image dimensions. This
template uses the standard 240p format and also provides image dimension variables
in the callback function,
InitFcn. These variables control the
sample time on the Video Source and the simulation stop time. To view or edit this
function, on the Modeling tab, expand Model
Settings and click Model Properties, select
the Callbacks tab, and then click
This template includes the following features that assist with HDL code generation:
Configures Solver and HDL Code Generation settings equivalent to calling
Displays data rates and data types in the Model Editor
Creates an instance of
pixelcontrolbusin the workspace (in