Create High-Quality Video Panoramas In A Jiffy
Combining video feeds enables the creation of video panoramas beyond the resolution of any one camera.
Though combining or stitching separate still images into one is a technique as old as photography, stitching together video feeds remains a difficult challenge due to parallax changing over time.
The new technique automatically analyses the images from the cameras to estimate the position and alignment of each camera. This eliminates the need to use special or manual calibration techniques and allows for a flexible positioning of the cameras.
The algorithm corrects for differences in parallax that create ghosting and other disturbing effects in the areas of the panorama where images from separate cameras are stitched together.
It also detects and corrects for image warping -- wavy lane markings on roads, or buildings that appear to bend over -- that occurs when images are stitched together.
Finally, the technique also compensates for slight differences in the timing of frames between cameras, which otherwise causes jitter and other artefacts in the image.
The findings were scheduled to be presented at "EUROGRAPHICS 2015", the annual conference of the European Association for Computer Graphics in Zurich, Switzerland this week.
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