实验步骤
1、 查询USB2.0Camera 的具体参数 输入 imaqInfo = imaqhwinfo 返回信息
InstalledAdaptors: {'winvideo'} MATLABVersion: '7.1 (R14SP3)'
ToolboxName: 'Image Acquisition Toolbox' ToolboxVersion: '1.9 (R14SP3)' 输入imaqInfo.InstalledAdaptors 返回信息 ans = 'winvideo'
输入winvideoinfo = imaqhwinfo('winvideo') 返回信息 winvideoinfo =
AdaptorDllName: [1x76 char] AdaptorDllVersion: '1.9 (R14SP3)' AdaptorName: 'winvideo' DeviceIDs: {[1]}
DeviceInfo: [1x1 struct] 输入 winvideoinfo.DeviceInfo
返回信息 ans =
DefaultFormat: 'YUY2_160x120' DeviceFileSupported: 0 DeviceName: 'USB 视频设备' DeviceID: 1
ObjectConstructor: 'videoinput('winvideo', 1)' SupportedFormats: {1x5 cell}
输入device1 = winvideoinfo.DeviceInfo(1) 返回信息 device1 =
DefaultFormat: 'YUY2_160x120' DeviceFileSupported: 0 DeviceName: 'USB 视频设备' DeviceID: 1
ObjectConstructor: 'videoinput('winvideo', 1)' SupportedFormats: {1x5 cell} 输入device1.DeviceName 返回信息 ans = USB 视频设备
输入device1.DeviceID 返回信息 ans = 1
输入device1.DefaultFormat 返回信息 ans = YUY2_160x120
输入device1.SupportedFormats 返回信息
Columns 1 through 4
'YUY2_160x120' 'YUY2_176x144' 'YUY2_320x240' 'YUY2_352x288' Column 5 'YUY2_640x480'
2、 最简单采集实验,输入如下代码，可以得到预览下的默认格式的摄像头捕捉窗口obj=videoinput('winvideo',1); preview(obj); 3、 输入如下代码
vidobj = videoinput('winvideo',1,'YUY2_640x480'); sources = vidobj.Source; whos sources
set(vidobj,'SelectedSourceName','input1'); sources
selectedsrc = getselectedsource(vidobj); get(selectedsrc); delete(vidobj); clear vidobj; 返回信息
Name Size Bytes Class sources 1x1 726 videosource object
Grand total is 30 elements using 726 bytes Display Summary for Video Source Object: Index: SourceName: Selected: 1 'input1' 'on' General Settings:
Parent = [1x1 videoinput] Selected = on
SourceName = input1Tag = Type = videosource
Device Specific Properties: BacklightCompensation = on Brightness = -16
