Video Capture Interface
Simulate capture of images from video stream on hardware
SoC Blockset / Peripherals
The Video Capture Interface block simulates the behavior of a video input device. The block emits the captured image in message for a connected Video Capture block that can be used in an algorithm. The block can also emit an event that, when connected a Task Manager block, can trigger a task containing the Video Capture block.
data — Image data
vector as the unwrapped images matrices.
To enable this port, set the Input parameter to
From input port.
event — Task event signal
This port sends a message at each new image event. This output connects to the input of the Task Manager block to execute the associated event-driven task after receiving the new image.
To enable this port, select the Show event port parameter.
msg — SoC message data
This port outputs data messages containing image data to a connected Video Capture block.
Input — Source of simulated video data
From dialog (default) |
From input port |
From timeseries object
Specify the source of the simulated image data.
Value — Image to be imported
uint8(floor(rand(1,3*160*120)*255)) (default) | 3MN-element vector
Specify the simulated image as a vector. The vector gets transformed into three M-by-N matrices representing the color channels of the image source.
Object name — Timeseries object name
 (default) | MATLAB workspace variable
Specify the video source as a timeseries object in the MATLAB® workspace.
Sample time — Sample time in seconds
-1 (default) | positive scalar
Enter the sample time defining the rate at which to output the message containing video data.
Show event port — Option to enable task event ports
off (default) |
Select this parameter to enable an event port that, when connected to the Task Manager block, can execute event-driven tasks.
C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.
To automatically generate C code for your design, and execute on an SoC device, use the SoC Builder tool. To generate and execute C code for your SoC models, Embedded Coder® features are required. For more information on generating code for SoC designs, see Generate SoC Design.
Embedded Coder does not generate code for this block. In the generated code,the V4L2 driver framework performs the video capture on the device. The related Video Capture block represents the V4L2 driver. For more information on the V4L2 driver framework, see Video4Linux.