Store a videoinput in a Data Store Memory block in Simulink
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Hello,
I'm trying to store a videoinput in a DataStoreMemory, so I can access it out of a Embedded MATLAB Function (fcn) block. I set the type to an expression (videoinput). But I got an error:
Error evaluating parameter 'OutDataTypeStr' in 'DataStoreImage/VideoInputDataStore': ADAPTORNAME and DEVICEID must be specified.
Can you help me? If I missed necessary information, please tell me.
Thanks Timo
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Kaustubha Govind
il 15 Apr 2011
I believe Data Store Memory only supports numeric types (see Section "Data type" on the documentation page).
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Shankar Subramanian
il 22 Apr 2011
Hi Timo,
Writing your own MATLAB function (using videoinput and getdata) and bringing into SIMULINK will not necessarily help you with the rate. You should actually run the script suggested here to calculate the frame rate in MATLAB.
The From Video Device block does not add any performance overhead and performs at par with the rate achievable within MATLAB using the hardware.
Thanks
Shankar
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Timo
il 15 Apr 2011
1 Commento
Kaustubha Govind
il 20 Apr 2011
Are you using the MATLAB Fcn block? You could try using persistent variables.
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