Method for low complexity low memory inverse dithering
Patent 6163629 Issued on December 19, 2000. Estimated Expiration Date: 
January 30, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 30, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesImage processing apparatus which converts m-bit image data to n-bit (n>m) image data Image processing method to remove halftone screens Image processing system and method with improved reconstruction of continuous tone images from halftone images including those without a screen structure Apparatus & method for descreening Stack filters for 1-to-N bit image processing in electronic printers Patent #: 5493419 InventorsAssigneeApplicationNo. 016316 filed on 01/30/1998US Classes:382/260, Image filter358/3.08, Descreening (e.g., inverse halftone conversion)382/261Adaptive filterExaminersPrimary: Lee, Thomas C.Attorney, Agent or FirmForeign Patent References
International ClassG06K 009/40AbstractA method and apparatus for inverse dithering a dithered image is disclosed. The system includes a plurality of digital filters which are organized according to a preselected order. A selection module enables the selection of one filter from the plurality of filters according to the preselected order to filter a presently selected portion of the dithered image. The selected portion of the dithered image is then processed based upon the selected filter to generate a portion of the inverse dithered image.Other References
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