What is the USB Camera handler
TQLEngine provides a protocol handler wrapper to interact with USB Camera. USB Camera are handy actuators for home monitoring, taking one off pictures etc.
- High frame rate MJPEG 60 fps @ 1280 (H) x 720 (V) , 30 fps @ 1920 (H) x 1080 (V)
- CMOS 1080P sensor for high quality image and low power consumption
- high pixel technology for sharp image and accurate color reproduction
- low light performance - ideal for any lighting condition
- UVC for use in Linux, Windows XP, WIN CE, MAC, SP2 or above
USB Camera Parameters
Parameter Name | Description | |
---|---|---|
USBCameraParameters.ImageFormat | Specify image format. Example: jpeg | |
USBCameraParameters.SaveToDisk | Do you want the image file to be saved to disk?. Value is either true or false | |
USBCameraParameters.ImageName | Specify the file name to be used when saving to the disk. The file gets saved in the current folder in which TQLEngine is running | |
USBCameraParameters.Size.Height | Image height. An integer value | |
USBCameraParameters.Size.Width | Image width. An integer value. | |
Invoking UCAM Handler
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USBCameraParameters.Configuration.Standard | Standard value of image |
USBCameraParameters.Configuration.Quality | Quality of image |
USBCameraParameters.Configuration.Channel | The acquisition channel. Default is 0 |
USBCameraParameters.Configuration.Brightness | Brightness of video image (0-255) |
USBCameraParameters.Configuration.Contrast | Contrast of image (0-255). |
USBCameraParameters.Configuration.Gamma | Gamma of image |
USBCameraParameters.Configuration.Gain | Gain of image |
USBCameraParameters.Configuration.Sharpness | Sharpness of image (0-255). |
USBCameraParameters.Configuration.Saturation | Saturation of image (0-255). |
USBCameraParameters.Configuration.Hue | Hue of image |
USB Camera Parameter Structure
Code Block | ||||||
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| ||||||
<USBCameraParameters>
<ImageFormat></ImageFormat>
<SaveToDisk></SaveToDisk>
<ImageName></ImageName>
<Size>
<Height></Height>
<Width></Width>
</Size>
<Configuration>
<Standard></Standard>
<Quality></Quality>
<Channel></Channel>
<Brightness></Brightness>
<Contrast></Contrast>
<Gamma></Gamma>
<Gain></Gain>
<Sharpness></Sharpness>
<Saturation></Saturation>
<Hue></Hue>
</Configuration>
</USBCameraParameters> |
Invoking UCAM Handler
Code Block | ||||||
---|---|---|---|---|---|---|
| ||||||
<Action Name="USBCameraImageAction">
<Workflow Limit="1" Live="1" Timeout="-1">
<Task name="Main" while="true">
<Event name="Argument" as="ActionArgument"/>
<Invoke name="GetImage" waitFor="ActionArgument" post="ucam://">
<Message>
<Value>
<USBCameraParameters>
<ImageFormat>[%:Event.Argument.USBCameraParameters.ImageFormat.Value:%]</ImageFormat>
<SaveToDisk>[%:Event.Argument.USBCameraParameters.SaveToDisk.Value:%]</SaveToDisk>
<ImageName>[%:Event.Argument.USBCameraParameters.ImageName.Value:%]</ImageName>
<Size>
<Height>[%:Event.Argument.USBCameraParameters.Size.Height.Value:%]</Height>
<Width>[%:Event.Argument.USBCameraParameters.Size.Width.Value:%]</Width>
</Size>
<Configuration>
<Standard>[%:Event.Argument.USBCameraParameters.Configuration.Standard.Value:%]</Standard>
<Quality>[%:Event.Argument.USBCameraParameters.Configuration.Quality.Value:%]</Quality>
<Channel>[%:Event.Argument.USBCameraParameters.Configuration.Channel.Value:%]</Channel>
<Brightness>[%:Event.Argument.USBCameraParameters.Configuration.Brightness.Value:%]</Brightness>
<Contrast>[%:Event.Argument.USBCameraParameters.Configuration.Contrast.Value:%]</Contrast>
<Gamma>[%:Event.Argument.USBCameraParameters.Configuration.Gamma.Value:%]</Gamma>
<Gain>[%:Event.Argument.USBCameraParameters.Configuration.Gain.Value:%]</Gain>
<Sharpness>[%:Event.Argument.USBCameraParameters.Configuration.Sharpness.Value:%]</Sharpness>
<Saturation>[%:Event.Argument.USBCameraParameters.Configuration.Saturation.Value:%]</Saturation>
<Hue>[%:Event.Argument.USBCameraParameters.Configuration.Hue.Value:%]</Hue>
</Configuration>
</USBCameraParameters>
</Value>
</Message>
</Invoke>
<Log Message="******Invoked USBCamera******"/>
<Output name="Result" as="ActionResult">
<Value>
<Image>[%:[%:@Output:%]Invoke.GetImage.Message.Value:%]</Image>
</Value>
</Output>
</Task>
</Workflow>
</Action> |
Driver Installation Steps
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