| 摘要 |
An image processing method and system for generating enhanced binary image data from greyscale input image data. The method comprises (a) receiving first image data, said first image data being greyscale image data defining an input image, (b) performing a high frequency boost operation on the first image data to produce second image data, (c) performing a linear interpolation operation on the second image data to produce third image data, said third image data having a resolution higher than the resolution of the second image data, (d) performing a contrast enhancement operation on the third image data to produce fourth image data, and (e)thresholding the fourth image data to produce fifth image data, said fifth image data being binary image data defining an output image. The techniques find application, for example, in over-the-desk scanning of documents, and in video-conferencing. <IMAGE> |
