Visualiser
 |
A (digital) visualiser or visualizer (also called a document camera, digital presenter, or visual presenter) is an interactive teaching tool often referred to as a digitalized overhead projector. It uses a camera mounted on an arm to capture images of text, 3D objects, transparencies, microscope slides, x-rays, live movements and much more. The images are then displayed through a video projector or video monitor. Anyone can display these images in front of any audience and increase efficiency in classrooms or meeting rooms.
To use a visualiser, just connect it to a display device via the VGA cable and put an object under or in front of the camera.
Features of a visualiser include auto focus, exposure adjustments, real-time frame rates, high resolution image quality, and a built-in memory to store captured images. Various output connections such as DVI, VGA, XVGA, S-video, and composite give users flexibility when connecting a visualiser to a display device.
Lawyers, doctors, scientists, engineers, and teachers use visualisers to effectively present physical testimony to strengthen verbal ideas and fully interact with their audiences. Students simultaneously see what a teacher is showing rather than having to pass an object around the classroom. Interactive visualisers focus attention on what the teacher is showing as he or she talks about it.
Science teachers use visualisers to share the most minuscule subject matter with the help of a microscope adapter that easily connects to a visualiser’s camera head. Advanced visualiser models come with interactive software to record images, videos, annotations, and have audiences remotely connect to a visualiser via a computer and network. Visualisers are also compatible with interactive whiteboards.
AVerMedia, Elmo, Lumens, and WolfVision are some of the largest global players in the interactive visualiser market.