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US Patent 7515766 - Apparatus and method for edge handling in image processing
US Patent Issued on April 7, 2009
Estimated Patent Expiration Date:
September 22, 2024Estimated 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.
Estimated Patent Expiration Date:
September 22, 2024Estimated 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.AbstractA method and apparatus for hardware-base edge handling in video post-processing. In one embodiment, the method includes the identification of at least one unstored input pixel required to compute an output pixel during output pixel computation. Once identified, a pixel value is generated for the at least one unstored input pixel according to a detected edge handling mode. The generation of the pixel value for the unstored input pixel is performed, in one embodiment, if a position of the unstored input pixel is outside a pixel frame boundary. For example, in one embodiment, for output pixel computation of a scaling operation, the frame boundaries include a left (top) edge and a right (bottom) edge for which input pixels required to compute output pixels at or near the frame boundaries do not exist. Other embodiments are described and claimed. | InventorsAssigneeApplicationNo. 10947852 filed on 09/22/2004US Classes:382/268Minimize discontinuities at boundaries of image blocks (i.e., reducing blocking effects or effects of wrap-around)Field of Search382/266, Edge or contour enhancement382/268, Minimize discontinuities at boundaries of image blocks (i.e., reducing blocking effects or effects of wrap-around)382/269, Minimize jaggedness in edges (e.g., anti-aliasing)382/295, To position or translate an image382/298, To change the scale or size of an image382/299, Raising or lowering the image resolution (e.g., subpixel accuracy)382/300, Interpolation382/305, Image storage or retrieval358/1.17, Page or frame memory358/1.2, Size, resolution, or scale control358/3.15, Edge adaptive345/472, Scaling345/530, COMPUTER GRAPHICS DISPLAY MEMORY SYSTEM345/559RegisterExaminersPrimary: Patel, KanjiAttorney, Agent or FirmUS Patent References5237432, Image scaling apparatusIssued on: 08/17/1993 Inventor: Calarco, et al.5528704, Image resolution conversion using a plurality of image registrations Issued on: 06/18/1996 Inventor: Parker, et al.5650858, Pixel image edge-smoothing method and system Issued on: 07/22/1997 Inventor: Lund5689343, Area mapping employing reference clusters for high quality noninteger resolution conversion with enhancement Issued on: 11/18/1997 Inventor: Loce, et al.6005580, Method and apparatus for performing post-process antialiasing of polygon edges Issued on: 12/21/1999 Inventor: Donovan6144700, Method and apparatuses for removing blocking effect in a motion picture decoder Issued on: 11/07/2000 Inventor: Kim6549674, Image compression based on tiled wavelet-like transform using edge and non-edge filters Issued on: 04/15/2003 Inventor: Chui, et al.6664955Graphics system configured to interpolate pixel values Issued on: 12/16/2003 Inventor: Deering Foreign Patent References
International ClassesG06K 9/40G09G 5/36 |
