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Run DevWare, go to the main menu->Plug-ins-> Lens Distortion Correction Tools (Ver 2.0), and the Lens Distortion Correction Tools dialog is shown as followingsfollows: 
Fig. 1 Distortion Correction DevWarePluginDevWare Plug-in
The tool can operate in one of two modes: MT9V126 Hardware or Software Simulation. In MT9V126 Hardware mode the process of correcting the lens distortion and adjusting the perspective of the image are done by the system hardware. In the Software Simulation mode, these processes are done by a simulation of the system hardware by DevWare. In order to operate in MT9V126 Hardware an Aptina Imaging Demo camera has to be installed connected to your computer.
When selecting one of these modes, DevWare will automatically switch the sensor to the output format which corresponds with your selected mode. For MT9V126 Hardware DevWare will set the sensor to output Dewarp+Overlay CCIR656 Interlaced image. For Software Simulation DevWare will set the sensor to output 640x480 YCbCr/RGB Progressive image.
You can also change the sensor output mode directly by clicking the Control button in the DevWare toolbar, which brings up the Sensor Control dialog. In there access Digital Video Output and make sure 640x480 YCbCr/RGB Progressive is selected if you want to apply Distortion Correction settings to Devware software simulator, Or Dewarp+Overlay CCIR656 Interlaced if you want to apply the current Distortion Correction setting to sensor.
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A list of known issues and their workarounds are presented in this section.
Slight
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Artifact in Image in MT9V126 or MT9V128
Issue; the : The bottom of the image has a few lines repeated.
Workaround; add : Add "1" to the value of register 0x400A.
This issue should no longer occur in version 4.5.15 and later.