Patent ID: 7502145
Filing Date: 2009-03-10
Classification: H04N

Abstract:
1. A method for improving image quality of image data to be rendered, comprising: processing a first binary bit map of image data to generate a processed binary bit map; assigning an edge tag to at least one pixel in the processed binary bit map; and assigning a gray/color value to at least one pixel in the processed binary bit map based on values of corresponding pixels in the first binary bit map, wherein processing a first binary bit map of image data to generate a processed binary bit map comprises: processing the first binary bit map of image data to obtain a second binary bit map that identifies edge pixels of the image data; and generating a third binary bit map from the first and second binary bit maps; assigning an edge tag to at least one pixel in the processed binary bit map comprises: assigning an edge tag to at least one pixel in the third binary bit map based on a value of at least one corresponding pixel in the first binary bit map; and assigning a gray/color value to at least one pixel in the processed binary bit map based on values of corresponding pixels in the first binary bit map comprises: assigning a gray/color value to each pixel assigned an edge tag in the third binary bit map based on values of corresponding pixels in the first binary bit map.