Levenhuk C800 NG Digital Camera, USB 2.0 - Manual (Page 23)

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provide a Source Manager and Twain Data Source to work with ToupView.
Select the active device for Twain: Acquire••• from all devices available in the device
list box which are enumerated by the application.
One must install the Twain Device hardware and its driver first. See the
documentations provided by the device manufacturer for the installation
instructions.
Before begin to start Twain:Acquire at the first time with ToupView, choose
File>Twain:Select Device••• command first, then select the device. One does not
need to repeat this step for subsequent choosing of the Twain:Acquire••• command.
6.5 Twain:Acquire •••
Introduction
There are basically two techniques used to capture the video images from video
devices such as a PC camera, digital camera, and scanner. They are the
Twain:Acquire••• technique and the DirectShow technique (previously called VFW ).
The most obvious characteristics of the Twain technique is that it displays the Video
in smaller resolution but captures the image in high resolution. The USCMOS and
UHCCD series cameras support all of these two image capture techniques.
Steps for Twain Acquire
Here we illustrate how to capture the image using a UHCCD01400KPA (1.4M pixels,
USB2.0) camera as an example.
1. Install the camera driver (for example driver for UHCCD01400KPA hardware);
2. Install ToupView;