Key features of our software
Pan & tild
Corrects the rotation movements around the three axis (also known as roll, pitch and yaw rotations)
Fisheye distorsion
The apparent effect is that the image has been mapped around a sphere
Rolling shutter
CMOS sensors with a rolling shutter exposes the image line by line. For dynamic scenes this introduces undesired effects like stretch
Perspective distortion
The apparent effect is that objects close to the viewer appear to be much larger than objects further away in the background
A few videos that demonstrate how these methods work
Fisheye (or barrel) distortion appears when using wide-angle lens. The apparent effect is that of an image which has been mapped around a sphere (or barrel). The distortion increases with distance from the center of the image, and must be remapped in order to keep the center of the image undistorted.
Geometric perspective (sometimes called linear perspective) makes subjects in a picture look like they recede into distant space, appearing smaller the farther they are away from the viewer. This type of optical distortions appears when rotating the camera and can be corrected by re-projecting the image.
Most modern camcorders (those with a CMOS sensor instead of a CCD sensor) don't capture the whole frames at once, but instead use a "rolling shutter". Here the lines of a frame are captured one after another at slightly different (although usually overlapping) times, which can cause some ugly effects. For example, when panning up/down everything will get squeezed and stretched.
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