User`s guide

Version 2.5 (R2008a ) Video and Image Processing Blockset™
Compatability Considerations
To change the non-tunable parameters while you are working with a model,
you must stop a running simulation, change the parameter, and then start
the simulation again.
Enhanced From Multimedia File Block
The Video and Image Processing From Multimedia F i le b lock now allows for
proper synchronization of vide o and audio. Also, the determination of the
Frames Per Second (FPS) in the From Multimedia File Block was improved
for increased accuracy. As a result of these changes, this block might provide
a different sample time to the model. For more information about the
calculation of the default sample time b y the this block, please consult the
From Multimedia File block reference page.
Compatibility Considerations
Your existing models might error out if you are combining the output from
a From M ultimedia File block with the output from another source block
duetothechangeintheFromMultimediaFileblock. Sampletimemight
nowbedifferentfromthesampletimefromanothersourceblockinyour
model, causing the model to error. If this happens, you can either change the
sample time of the other source block to
−1
(inherited), or explicitly specify
thesampletimeyouwanttouseintheFromMultimediaFileblock’sDesired
sample time parameter.
Enhanced Blob Analysis Block
The Specify maximum blob area in pixels param eter in the Blob
Analysis Block is now tunable for both Simulation and Code Generation.
To accommodate this enhancement the Specify m aximum blob area in
pixels parameter has been modified to no longer accept
inf.Themaximum
allowabl e val ue is now calcula ted to be the maximum o f
uint32 data type.
Compatibility Considerations
Entering inf for the Specify maximum blob area in pixels parameter
will cause an error.
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