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. |
| 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
...
svn co http://v4l4j.googlecode.com/svn/v4l4j/trunk v4l4j-trunk
NOTE: If the above link with svn does not work. You can download the source directly from https://code.google.com/archive/p/v4l4j/source/default/source
4. Then go to the v4l4j-trunk directory (cd v4l4j-trunk) and start the build process by typing the command shown below
...