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Efficient image representation by edges and low-resolution signal

Image Number 7 for United States Patent #8116581.

An exemplary method for encoding an image includes receiving image data, detecting edges in the image data, selecting at least some of the detected edges, encoding the selected edges as selected edge information, down-sampling the image data, encoding the down-sampled image as down-sampled image information and multiplexing the selected edges information and the down-sampled image information. In such a method, the selected edges information and the down-sampled image information can be stored as an encoded image file. Other exemplary methods, devices, systems are also disclosed.

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