我已经安装了Labview2011和VDM模块，请问怎么才能采集到普通USB图像，需要再安装什么模块吗？
推荐回答（2个）
先在MAX中看看你的摄像头能否使用。再打开范例查找器中的相关范例看看IMAQ怎么用。单纯采集图像其实挺简单的。
=================VBAI, VAS 和 VDM之间有什么不同(摘自NI官网)=================
Vision Development Module（视觉开发模块）
该模块可作为LabVIEW或者是文本编辑环境 .NET 以及LabWindows CVI 的插件使用。
该工具提供在LabVIEW编程环境下使用多种图像处理以及识别的函数及功能。
附带的工具包 Vision Assistant 同VBAI十分相似，但是使用它设计的视觉识别程序可以方便的转换为LabVIEW的代码。
可以运行远程的目标如CVS (Compact Vision System)，但是除了LabVIEW之外还需要使用LabVIEW RealTime。
Vision Builder for Automated Inspection（用于自动检测的视觉生成器）
通常被称之为VBAI，该程序是一个可以独立运行的程序。编程和操作界面同Vision Assistant相似，但是不可以把程序转换为LabVIEW，只能在其环境下。
VBAI 程序可以在远程目标设备如CVS上运行。
Vision Acquisition Software（视觉获取软件）
用于捕获图像的一系列驱动程序。举例来说，该软件在Windows平台下的8.2.3版本包含了NI-IMAQ 3.7.1 和 NI-IMAQdx 3.0.1 (包括了对IEEE 1394 相机的支持)，以及NI-IMAQ I/O 2.0.2 驱动程序。
包含了在LabVIEW中所使用到的基本视觉获取VIs。基本的视觉图像获取以及文件存储之外的功能需要安装VDM。
Vision Acquisition Software 是包含在Vision Development Module，Vision Builder for Automated Inspection 以及所有的NI图像获取的软件中的。
如果只是安装了LV与VDM，要想看到USB中的图像，还需要安装IMAQdx驱动，即Vision Acquisition Software驱动软件。这个安装好后，会有IMAQdx驱动，这样理论上是可以采集到USB摄像头中的图像的，而如果再看不到，可能摄像头不支持DirectShow协议，不能被NI识别。换一个摄像头吧。石鑫华视觉网可以查看到相应的采集部分代码，以及NI 视觉教程。
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