Matlab摄像头基本操作

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