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Edge enhancement method and apparatus for dot matrix devices

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G06K-015/00
  • G06K-001/00
출원번호 US-0587316 (1990-09-24)
발명자 / 주소
  • Lung James C. Y. (San Jose CA)
출원인 / 주소
  • Destiny Technology Corporation (Milpitas CA 02)
인용정보 피인용 횟수 : 61  인용 특허 : 3

초록

Edge enhancement method and apparatus for dot matrix devices wherein a group of gradient mask matrices are applied to a “current matrix”, wherein a TBAP (To Be Adjusted Pixel) is surrounded by neighboring pixels, to determine if the TBAP is at a location where a change of brightness occurs. From thi

대표청구항

A method for enhancing the displayed image of a print or display apparatus, comprising the steps of: generating a set of gradient masks each of which represents a plurality of edge segment transition conditions and includes a matrix of axb cells each cell of which is assigned a numerical weight corr

이 특허에 인용된 특허 (3)

  1. Moore Donn F. (Utica MI) Folkerts Michael A. (Rochester MI), Dot matrix printer with half space dot capability.
  2. Tung Charles Cheng-Yuan (Boise ID), Piece-wise print image enhancement for dot matrix printers.
  3. Ando Hisashige (Yokohama JPX) Katsuyama Makoto (Kawasaki JPX) Sakuraba Takahiro (Kawasaki JPX), Vector pattern processing circuit for bit map display system.

이 특허를 인용한 특허 (61)

  1. Meyer, Robert J.; Retzlaff, Jr., Allen T., Auxiliary pixel patterns for improving print quality.
  2. Zeng Laiguang, Character smoothing in scanners/printers.
  3. Kuo, Wen Ning, Color image edge enhancement method.
  4. Sousa Hisashi,JPX, Color image processing apparatus for smoothing compensation of an image.
  5. Yang, Keven, Color image processing method with thin-line detection and enhancement.
  6. Yang, Keven, Color imaging processing method with boundary detection and enhancement.
  7. Meyer,Robert J.; Retzlaff, Jr.,Allen T., Digital halftone with auxiliary pixels.
  8. Majewicz, Peter, Digital image enhancement method and system that embolden or thin image features.
  9. Yamada, Yukimitsu, Display device for creating intermediate gradation levels in pseudo manner and image signal processing method.
  10. Chen, Pei-Chung, Edge enhancement method for halftone image.
  11. Wada Koji,JPX, Electrophotographic printer.
  12. Zulian, Ferruccio, Electrophotographic printing apparatus with enhanced printed image capability.
  13. Hara Kei,JPX ; Sunaga Yoriyuki,JPX, Exposing device for correcting an f.theta. error of a rotatable polygon mirror without using an f.theta. lens.
  14. Hugh L. Fuller ; Kurt L. Jacobs, Field programmable print control.
  15. Belkhir,Lotfi, Fringe field tailoring with sub-pixel patterns for improved print quality.
  16. Gershony Moshe Abraham,ILX ; Peretz Ami Oren,ILX, Half-tone dot generation.
  17. Sekine Hiroshi,JPX, Iimage processing apparatus.
  18. Sato Kazuhiko,JPX ; Horie Hiromitsu,JPX ; Sasaki Eiji,JPX ; Kamata Takao,JPX, Image forming apparatus.
  19. Suzuki Katsunori,DEX, Image forming apparatus for optimizing smoothing processing based on development used characteristic of image cartridge.
  20. Davidson Michael L. ; Hawkins Brian C., Image forming device having a reduced toner consumption mode.
  21. Suzuki Yoshitaka (Tokyo JPX), Image output device and image control method for smoothing image or increasing image resolution by use of same.
  22. Suzuki Yoshitaka,JPX, Image output device and image control method for smoothing image or increasing image resolution by use of same.
  23. Sekine Hiroshi,JPX, Image processing apparatus.
  24. Washio, Koji, Image processing apparatus and image processing method.
  25. Hanyu Hitomi (Soka JPX) Hanyu Yoshiaki (Soka JPX), Image processing apparatus involving comparison of densities of three contiguous pixels.
  26. Kimura, Takashi, Image processing apparatus, image forming apparatus, printer driver, image processing method and computer-readable storage medium.
  27. Loce Robert P. (Rochester NY) Cianciosi Michael S. (Rochester NY) Kingsley Jeffrey D. (Williamson NY), Image resolution conversion method that employs statistically generated multiple morphological filters.
  28. Silverbrook,Kia, Ink jet fault tolerance using oversize drops.
  29. Moore Steven R. ; Courtney Thomas P. ; Butts Richard E., Intentional underthinning of 600.times.300 image data when printing in multi-pass mode.
  30. Loce Robert P. (Webster NY) Jodoin Ronald E. (Pittsford NY) Cianciosi Michael S. (Rochester NY), Method and apparatus employing erosion-based filter pairs for image mapping.
  31. Silverbrook,Kia, Method and apparatus for compensating for printhead damage.
  32. Westerman, Larry; Davis, Thomas, Method and apparatus for determining the identity of a digital printer from its output.
  33. Szymaniak,Markus, Method and apparatus for eliminating unwanted steps at edges in graphic representations in the line raster.
  34. Wredenhagen, Finn G.; Cheng, Gary; Jang, Soo; Greggain, Lance, Method and apparatus for motion adaptive deinterlacing.
  35. Wredenhagen,G. Finn; Cheng,Gary; Jang,Soo Chang; Greggain,Lance, Method and apparatus for motion adaptive deinterlacing.
  36. Lu, Ai-Chieh, Method and system for monochrome multi-beam printing with edge enhancement.
  37. Lin Ying-wei (Penfield NY) Banton Martin E. (Fairport NY), Method for controlling compact dot growth.
  38. Knierim David L. ; Rogers A. J., Method for enhancing resolution in a printed image.
  39. Frederic Alain,FRX, Method for modifying the resolution of a digitized image.
  40. Silverbrook, Kia, Method for operating inkjet printer to compensate for printhead damage.
  41. Kuo, Wen Ning; Hu, Che Hung, Method for reducing memory consumption when carrying out edge enhancement in multiple beam pixel apparatus.
  42. Morimatsu, Hiroyuki; Hiratsuka, Seiichiro, Method of gradation reproduction.
  43. R. Victor Klassen ; Patrick O. Gilhuly CA, Method of increasing the resolution of an ink jet printer.
  44. Silverbrook, Kia, Method of operating printer with incorrectly operating nozzles.
  45. Coonan Bonnie R. (Rochester NY) Frumusa Anthony M. (Penfield NY) Nacman Aron (Penfield NY) Tse Francis K. (Rochester NY) Davidson Michael L. (Rochester NY), Multifunctional apparatus for appearance tuning and resolution reconstruction of digital images.
  46. Klassen R. Victor (Webster NY) Morgana Stephen C. (Brockport NY), Neighbor insentive pixel deletion method for printing high resolution image.
  47. Meyer, Robert J.; Retzlaff, Jr., Allen T., Non-printing patterns for improving font print quality.
  48. Chao, Po-Wei, Pattern detecting method and related image processing apparatus.
  49. Otsu Kazunori,JPX ; Kitada Takashi,JPX ; Yamada Hiroyuki,JPX ; Unoki Muneo,JPX ; Tsuruno Koichiro,JPX, Picture forming apparatus.
  50. Overton Mark A., Pixel correction and smoothing method.
  51. Overton Mark A. (Escondido CA), Pixel correction and smoothing method.
  52. McDonough Timothy M. ; Scandalis Aneesa R. ; Blume J. Erik, Print enhancement system for enhancing dot printer images.
  53. Silverbrook,Kia, Printing oversize dots in images to provide printer fault tolerance.
  54. Lund Mark D. (Vancouver WA) Miller Steven O. (Vancouver WA), Raster imaging device speed-resolution product multiplying method and resulting pixel image data structure.
  55. Ng Yee S. (Fairport NY) Yeh Hurjay (Rochester NY) Pickup Michael A. (Rochester NY), Resolution enhancement system for combined binary and gray scale halftone images.
  56. Cooper, Carl, Spatial scan replication circuit.
  57. Cooper, Carl, Spatial scan replication circuit.
  58. Cooper, J. Carl, Spatial scan replication circuit.
  59. Cooper,Carl, Spatial scan replication circuit.
  60. Wredenhagen,G. Finn; Elias,Andrew, System and method for reducing noise in images.
  61. Tse Huong Choo SG, Text enhancement.
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