vid1

Query for hardware information

gh = imaqhwinfo();
disp(gh);

    InstalledAdaptors: {'coreco'  'winvideo'}
        MATLABVersion: '7.10 (R2010a)'
          ToolboxName: [1x25 char]
       ToolboxVersion: '3.5 (R2010a)'

Query individual instruments

gh = imaqhwinfo('winvideo');
n = length(gh.DeviceInfo);
for k=1:n
    gi = gh.DeviceInfo(k);
    disp(gi);
    str = char(gi.ObjectConstructor);
    fprintf('\nObjectConstructor: %s\n',str);
    vid = eval(str);
    fprintf('\nSupported Formats\n');
    disp(gi.SupportedFormats');
    delete(vid);
end

          DefaultFormat: 'YUY2_160x120'
    DeviceFileSupported: 0
             DeviceName: 'USB Video Device'
               DeviceID: 1
      ObjectConstructor: [1x25 char]
       SupportedFormats: {1x5 cell}


ObjectConstructor: videoinput('winvideo', 1)

Supported Formats
    'YUY2_160x120'
    'YUY2_176x144'
    'YUY2_320x240'
    'YUY2_352x288'
    'YUY2_640x480'

vid = videoinput('winvideo',1,'YUY2_640x480');
preview(vid)
pause(1)

disp(vid)
info = get(vid);
disp(info)

Summary of Video Input Object Using 'USB Video Device'.

   Acquisition Source(s):  input1 is available.

  Acquisition Parameters:  'input1' is the current selected source.
                           10 frames per trigger using the selected source.
                           'YUY2_640x480' video data to be logged upon START.
                           Grabbing first of every 1 frame(s).
                           Log data to 'memory' on trigger.

      Trigger Parameters:  1 'immediate' trigger(s) on START.

                  Status:  Waiting for START.
                           0 frames acquired since starting.
                           0 frames available for GETDATA.

      BayerSensorAlignment: 'grbg'
                  DeviceID: 1
                DiskLogger: []
      DiskLoggerFrameCount: 0
                  ErrorFcn: @imaqcallback
                  EventLog: [1x0 struct]
         FrameGrabInterval: 1
            FramesAcquired: 0
         FramesAcquiredFcn: []
    FramesAcquiredFcnCount: 0
           FramesAvailable: 0
          FramesPerTrigger: 10
        InitialTriggerTime: []
                   Logging: 'off'
               LoggingMode: 'memory'
                      Name: [1x23 char]
             NumberOfBands: 3
                Previewing: 'on'
        ReturnedColorSpace: 'YCbCr'
               ROIPosition: [0 0 640 480]
                   Running: 'off'
        SelectedSourceName: 'input1'
                    Source: [1x1 videosource]
                  StartFcn: []
                   StopFcn: []
                       Tag: ''
                   Timeout: 10
                  TimerFcn: []
               TimerPeriod: 1
          TriggerCondition: 'none'
                TriggerFcn: []
         TriggerFrameDelay: 0
             TriggerRepeat: 0
          TriggersExecuted: 0
             TriggerSource: 'none'
               TriggerType: 'immediate'
                      Type: 'videoinput'
                  UserData: []
               VideoFormat: 'YUY2_640x480'
           VideoResolution: [640 480]

src = getselectedsource(vid);
disp(src)
info = get(src);
disp(info)

   Display Summary for Video Source Object:

      Index:   SourceName:   Selected:
      1        'input1'      'on'     

    BacklightCompensation: 'on'
               Brightness: 30
                 Contrast: 57
                FrameRate: '30.0000'
                    Gamma: 3
                   Parent: [1x1 videoinput]
               Saturation: 2
                 Selected: 'on'
                Sharpness: 10
               SourceName: 'input1'
                      Tag: ''
                     Type: 'videosource'

set(vid,'ReturnedColorSpace','rgb');
img = getsnapshot(vid);
% rgb = ycbcr2rgb(img); % don't need to convert colorspace earlier
imshow(img);
closepreview(vid)

start(vid);
data = getdata(vid);
imaqmontage(data);

delete(vid);
clear all;