Method and apparatus for progressive encoding for text transmission
AssigneeTeradici Corporation
InventorDavid Victor Hobbs
Life of this patent
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Abstract
A method for encoding a text image. In one embodiment the method comprises determining a background color of an image; dividing the image into text pixels and background pixels, each of the background pixels comprising the background color; determining a text color based on colors of the text pixels; determining a text attribute comprising a luminance profile describing a contour of luminance of a set of the text pixels; generating a binary text mask based on position and luminance of each of the text pixels and the luminance profile; and generating, by a computer, an encoded image comprising the background color, the text color, the binary text mask, and the text attribute.
Claims16
A method for encoding a text image, comprising:
- determining, by a computer having one or more processors, a background color of an image;
- dividing, by the computer, the image into text pixels and background pixels, each of the background pixels comprising the background color;
- determining, by the computer, a text color based on colors of the text pixels;
- determining, by the computer, a text attribute comprising a luminance profile describing a contour of luminance of a set of the text pixels;
- generating, by the computer, a binary text mask based on position and luminance of each of the text pixels and the luminance profile;
- and
- generating, by the computer, an encoded image comprising the background color, the text color, the binary text mask, and the text attribute.
Dependencies are inferred from the claim text.