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Image signal processing device capable of suppressing nonuniformity of illumination 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04N-005/21
출원번호 US-0863441 (1992-04-03)
우선권정보 JP-0095872 (1991-04-25); JP-0121787 (1991-04-25)
발명자 / 주소
  • Wada Toru (Tokyo JPX) Komiya Yasuhiro (Tokyo JPX) Nagasaki Tatsuo (Yokohama JPX)
출원인 / 주소
  • Olympus Optical Co., Ltd. (Tokyo JPX 03)
인용정보 피인용 횟수 : 32  인용 특허 : 0

초록

An image signal processing device includes a logarithmic compression circuit, filtering circuit, filtering characteristic setting circuit and dynamic range/gain control circuit. The logarithmic compression circuit subjects an input image signal containing a color signal to the logarithmic compressio

대표청구항

An image signal processing device comprising: logarithmic compression means for subjecting an input image signal containing a color signal to logarithmic compression; filtering means for filtering the input image signal which is subjected to the logarithmic compression by said logarithmic compressio

이 특허를 인용한 특허 (32)

  1. Grigorian, Sam; Kamko, Yuiry, Adaptive filter for suppressing repetitive high-frequency information in a video data stream.
  2. Adler, Doron; Zaretski, Alex; Pillar, Ofer; Shafrir, Keren; Segev, Mordechai, Apparatus, method and system for intravascular photographic imaging.
  3. Pan Shao Wei (Schaumburg IL) Wang Shay-Ping Thomas (Long Grove IL) Lloyd Scott Edward (Hoffman Estates IL) Labun Nicholas Mikulas (Chicago IL) Hayner David Alan (Arlington Heights IL), Computer Processor utilizing logarithmic conversion and method of use thereof.
  4. Lloyd Scott Edward ; Pan Shao Wei ; Wang Shay-Ping Thomas, Computer processor having a pipelined architecture and method of using same.
  5. Mori, Hirotoshi, Contour correction device.
  6. Choi, Sang Um, Contrast enhancement apparatus of video signal.
  7. Chen, Hsing-Chuan, Control method for improving luminous uniformity and related luminosity calibrating controller and display device.
  8. Adler,Doron; Pillar,Ofer; Blumenzweig,Arie; Finkman,Shai; Hanuka,David, Endoscope electronics assembly.
  9. Adler, Doron, Endoscope small imaging system.
  10. Buss John Michael ; Dworkin James Douglas ; Lloyd Scott Edward ; Pan ShaoWei ; Smith Stephen L. ; Wang Shay-Ping Thomas, Exponentiation circuit utilizing shift means and method of using same.
  11. Finkman, Shai; Navve, Adi, Hybrid interconnect.
  12. Matsunaga,Yoshiyuki; Mabuchi,Keiji; Ohsawa,Shinji; Nakamura,Nobuo; Yamashita,Hirofumi; Miura,Hiroki; Tanaka,Nagataka, Image system, solid-state imaging semiconductor integrated circuit device used in the image system, and difference output method used for the image system.
  13. Adler,Doron; Pillar,Ofer; Zaretski,Alex; Blumenzweig,Arie, Image-distorting endoscopes and methods of making and using such endoscope.
  14. Collins, Stephen; Marshall, Gillian F; Wade, Michael F, Imaging system with low sensitivity to variation in scene illumination.
  15. Dinwoodie, Thomas L., Inclined photovoltaic assembly.
  16. Pan Shao W. (Schaumburg IL) Wang Shay-Ping T. (Long Grove IL), Log converter utilizing offset and method of use thereof.
  17. Pan Shao Wei ; Wang Shay-Ping T., Log converter utilizing offset and method of use thereof.
  18. Pan Shao Wei ; Wang Shay-Ping Thomas, Logarithm/inverse-logarithm converter and method of using same.
  19. Dworkin James D. (Chandler AZ) Giangarra Philip B. (Mansfield MA) Smith Stephen L. (Chandler AZ), Logarithm/inverse-logarithm converter utilizing linear interpolation and method of using same.
  20. Pan ShaoWei (Schaumburg IL) Wang Shay-Ping Thomas (Long Grove IL), Logarithm/inverse-logarithm converter utilizing second-order term and method of using same.
  21. Adler, Doron; Zaretski, Alex, Medical wireless imaging device.
  22. Adler, Doron, Method and apparatus for viewing through blood.
  23. Spitzer, Hedva; Cohen-Duwek, Hadar; Barkan, Yuval, Method and device for processing computerized tomography images.
  24. Barkan, Yuval; Spitzer, Hedva; Faltin Gefen, Yael, Method and system for processing an image featuring multiple scales.
  25. Barkan, Yuval; Spitzer, Hedva; Faltin Gefen, Yael, Method and system for processing an image featuring multiple scales.
  26. Spitzer, Hedva; Yatir, Yossi, Method of and apparatus for processing images using saturation functions.
  27. Spitzer,Hedva; Karasik,Yan, Method of and device for modulating a dynamic range of still and video images.
  28. Blumzvig, Arie; Zaretsky, Alex; Adler, Doron; D'Amelio, Frank, Miniature camera head.
  29. Wang Shay-Ping Thomas, Neural network utilizing logarithmic function and method of using same.
  30. Brooks,Roger K.; Ma,Yanda; Singhal,Dave M.; Hong,Xia, Personal broadcasting system for audio and video data using a wide area network.
  31. Fan,Jian, Systems and methods for processing a digital captured image.
  32. Haider,Towfique; Demmer,Walter H.; DeCanne,Bart, Video correction system and method using logarithmic conversion.
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