Basics of Panoramic Cameras
Panoramic Cameras are cameras with Fisheye Hemispheric lenses provide a broader view of the world than is possible with any other lens.
Nowadays IP cameras are multiple Megapixels, HD (720p: 1280 * 720 pixels) is the most basic resolution, 12 Megapixels (4000 * 3000) IP cameras are already available with affordable price. The higher pixels of video results greater "ppf" (pixels per foot) especially if cameras are with “rectilinear” lenses (which have narrow view), too high ppf is not really necessary for most IP cameras applications. Fisheye Hemispheric lenses can cover 180/360 degree hemispherical view, make the best use of excessive pixles of nowadays IP cameras.
To project three dimensional sphere onto the flat surface of screen that must accommodate that sphere with perceived accuracy. There is a need to better handle the distortions these lenses produce. The mapping process has an exact analogy to cartography. Most of common correction options applied to Panoramic Cameras video are to render hemispherical images using rectilinear mapping techniques. The methods have many drawbacks, such as distortion of people and loss of resolution and data.
PanoNVR provides an aesthetically pleasing and natural view of video using a unique patented mapping technology. PanoNVR provides a more normal view of people and scenes. It ensures highest resolution of video by including all the original pixels of each frame (in comparison to other correction methods), displays the intended composition and framing, and straightens vertical lines, perform realtime (>30fps refresh rate) ePTZ, output to true HD display or latest 4K display (Professional PanoNVR), multiple splits on screen to display all direction view from single or multiple Panoramic IP Cameras, enlarge selected single video to full screen with still smooth ePTZ.
The surrounding space appears to be a sphere centered on Panoramic Camera. Panoramic Cameras taking pictures projects this sphere inward onto a flat digital sensor (a planar surface) at 25/30 fps, PanoNVR dewarps 25/30fps images output from camera, mapping the surface of the sphere, displaying dewarped video on screen (also a planar surface) in astonishing efficient way.