Title:
IMAGE CONVERSION DEVICE AND IMAGE CONVERSION PROGRAM
Document Type and Number:
WIPO Patent Application WO/2006/132014
Kind Code:
A1
Abstract:
It is possible to provide an image conversion device and an image conversion program capable of reducing an operation load when converting a luminance image into brightness image. Firstly, the luminance image is subjected to a wavelet decomposition to generate J (J is an integer not smaller than 2) sub band images (S2). Next, according to a predetermined relationship between luminance and brightness, a luminance value is converted in to a brightness value for each of the pixels in the sub band image (S4). Next, wavelets of K (K is an integer not smaller than 2, K ≤ J) sub band images are combined to generate a brightness image (S5).
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Inventors:
NAKAMURA YOSHIKI (JP)
FURUYA HIROSHI (JP)
FURUYA HIROSHI (JP)
Application Number:
PCT/JP2006/304242
Publication Date:
December 14, 2006
Filing Date:
March 06, 2006
Export Citation:
Assignee:
TOKYO INST TECH (JP)
NAKAMURA YOSHIKI (JP)
FURUYA HIROSHI (JP)
NAKAMURA YOSHIKI (JP)
FURUYA HIROSHI (JP)
International Classes:
G01J1/42
Foreign References:
| JP2004061150A | 2004-02-26 | |||
| JP2002039859A | 2002-02-06 | |||
| JPH0984053A | 1997-03-28 |
Other References:
NAKAMURA Y. ET AL.: "Contrast Profile o Mochiita Akarusa Chikaku no Yosoku -Kido no Taihi o Koryo shita Akarusa Chikaku ni Kansuru Kenkyu(Sono 2)-.(Prediction of Brightness Using Contrast Prifile Method -Brightness Prediction Based on Luminance Contrast, Part 2-)", JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN, vol. 89, no. 5, 1 May 2005 (2005-05-01), pages 230 - 235, XP003004620
NAKAMURA Y. ET AL.: "Kin'itsu Haikei o Motsu Shitaisho no Akarusa Chikaku -Kido no Taihi o Koryo shita Akarusa Chikaku ni Kansuru Kenkyu (Sono 2)-. (Brightness of a Circular Object with a Uniform Luminance Background -Brightness Prediction Based on Luminance Contrast Part1-)", JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN, vol. 88, no. 2, 1 February 2004 (2004-02-01), pages 77 - 84, XP003004621
NAKAMURA Y.: "Akarusa to Akarusakan. (Luminous Intensity and Brightness)", JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN, vol. 86, no. 10, 1 October 2002 (2002-10-01), pages 746 - 753, XP003004622
FUJINO M. ET AL.: "Shomei Sekkei Tool to shite no Kido -Akarusa Henkan System no Kochiku-. (A Lighting Design System Based on Brightness Predicted from Luminance Distribution)", 2004 NENDO TAIKAI (HOKKAIDO) SUMMARIES OF TECHNICAPAPERS OF ANNUAL MEETING, ARCHITECTURAL INSTITUTE OF JAPAN, 31 July 2004 (2004-07-31), pages 329 - 330, XP003004623
INOUE M. ET AL.: "Kido no Taihi o Koryo shita Akarusakan Sono 1. (Brightness Estimation with Consideration to Luminance Contrast Part 1)", 2001 NENDO TAIKAI (KANTO) SUMMARIES OF TECHNICALPAPERS OF ANNUAL MEETING, ARCHITECTURAL INSTITUTE OF JAPAN, 31 July 2001 (2001-07-31), pages 459 - 460, XP003004624
NAKAMURAY Y. ET AL.: "Kido no Taihi o Koryo shita Akarusakan Sono 2. (Brightness Estimation with Consideration to Luminance Contrast Part 2)", 2001 NENDO TAIKAI (KANTO) SUMMARIES OF TECHNICALPAPERS OF ANNUAL MEETING, ARCHITECTURAL INSTITUTE OF JAPAN, 31 July 2001 (2001-07-31), pages 461 - 462, XP003004625
See also references of EP 1890120A4
NAKAMURA Y. ET AL.: "Kin'itsu Haikei o Motsu Shitaisho no Akarusa Chikaku -Kido no Taihi o Koryo shita Akarusa Chikaku ni Kansuru Kenkyu (Sono 2)-. (Brightness of a Circular Object with a Uniform Luminance Background -Brightness Prediction Based on Luminance Contrast Part1-)", JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN, vol. 88, no. 2, 1 February 2004 (2004-02-01), pages 77 - 84, XP003004621
NAKAMURA Y.: "Akarusa to Akarusakan. (Luminous Intensity and Brightness)", JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN, vol. 86, no. 10, 1 October 2002 (2002-10-01), pages 746 - 753, XP003004622
FUJINO M. ET AL.: "Shomei Sekkei Tool to shite no Kido -Akarusa Henkan System no Kochiku-. (A Lighting Design System Based on Brightness Predicted from Luminance Distribution)", 2004 NENDO TAIKAI (HOKKAIDO) SUMMARIES OF TECHNICAPAPERS OF ANNUAL MEETING, ARCHITECTURAL INSTITUTE OF JAPAN, 31 July 2004 (2004-07-31), pages 329 - 330, XP003004623
INOUE M. ET AL.: "Kido no Taihi o Koryo shita Akarusakan Sono 1. (Brightness Estimation with Consideration to Luminance Contrast Part 1)", 2001 NENDO TAIKAI (KANTO) SUMMARIES OF TECHNICALPAPERS OF ANNUAL MEETING, ARCHITECTURAL INSTITUTE OF JAPAN, 31 July 2001 (2001-07-31), pages 459 - 460, XP003004624
NAKAMURAY Y. ET AL.: "Kido no Taihi o Koryo shita Akarusakan Sono 2. (Brightness Estimation with Consideration to Luminance Contrast Part 2)", 2001 NENDO TAIKAI (KANTO) SUMMARIES OF TECHNICALPAPERS OF ANNUAL MEETING, ARCHITECTURAL INSTITUTE OF JAPAN, 31 July 2001 (2001-07-31), pages 461 - 462, XP003004625
See also references of EP 1890120A4
Attorney, Agent or Firm:
Furuya, Fumio (19-5 Nishishinjuku 1-chom, Shinjuku-ku Tokyo 23, JP)
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