matlab下拍照功能的实现

matlab专门用于图像获取的工具箱Image Acquisition Toolbox，并提供了GUI可视化界面、编写简单的照相和监控系统，用于图像获取处理和监控的仿真。videoinput函数:获取外部图像获取硬件资源IDobj=videoinput（adaptorname）imaqhwinfo获取adaptorname:winvideo所有属性，函数列表和说明videoinput对象的属性和函数imaqhelp videoinputFramesPerTrigger,每次触发硬件获得的帧数FramesPerTrigger个帧；TriggerRepeat;再次触发所需要的时间FramesAcquired，一个图像获取硬件所获取的帧总数VideoResolution，图像分辨率getsnapshot,获取图像即拍摄preview/closepreview，预览图像/关闭预览start/stop，启动设备/停止设备拍照实现过程功能：图像显示界面预览凸显功能拍照功能matlab源码：obj=videoinput（"winvideo"）;
set（obj,"TriggerRepeat",inf）;
set（obj,"FramesPerTrigger",1）; %建立界面
hf=figure（"Units","Normalized","Menubar","None","NumberTitle","off","Name","演示拍照系统"）;
ha=axes（"Parent",hf,"Units","Normalized","Position",[.05 .2 .85 .7]）;
axis offhb1=uicontrol（"Parent",hf,"Units","Normalized",...
"Position",[.25 .05 .2 .1],"String","预览",...
"Callback",...
["objRes=get（obj,""VideoResolution""）;"...
"nBands=get（obj,""NumberOfBands""）;"...
"hImage=image（zeros（objRes（2）,objRes（1）,nBands））;"...
"preview（obj,hImage）;"]）;%hImage是为了让拍照在本窗口显示，去掉后就相当于另外生成一个窗口
%当然也可以获得拍照效果，当时操作不方便
hb2=uicontrol（"Parent",hf,"Units","Normalized",...
"Position",[.55 .05 .2 .1],"String","拍照",...
"Callback","imwrite（getsnapshot（obj）,""in.jpg""）"）;