NEC has developed super resolution technologies for fine magnification of surveillance camera images, including faces and license plates.
Until now, existing technologies required numerous still images from a video in order to improve a subject's resolution and enable its magnification. However, these images blur when magnified by more than two or three times - four to nine times the number of pixels.
According to NEC, its new technologies create a 'super resolution' from just one shot of a subject by utilising a database of categorised images. The library stores images with a variety of resolutions - the best of which are automatically selected.
A small size image library of data that can be deployed with a variety of equipment is created from a large set of image data. Redundant images are quickly eliminated from the library, which makes the library as small as possible without affecting image quality.
Images are said to maintain fine details even when magnified by more than four times – more than 16 times the number of pixels. This makes it possible to distinguish small and distant subjects, something extremely difficult with conventional technologies.
Potential applications include surveillance cameras that cover large areas such as airports or traffic intersections.
NEC plans to expand the use of the technologies into fields such as satellite and medical image enhancement.
News Electronics
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