Image processor performing a high precision retinex process

Details Image processor performing a high precision retinex process Image processor performing a high precision retinex process

2007-08-31

2011-12-20

Desire, Gregory M (Department: 2624)

Image analysis

Image enhancement or restoration

C382S300000, C348S254000

Reexamination Certificate

active

08081831

ABSTRACT:
An image processor includes: a decimal point position determining unit; an image inputting unit; and a calculating unit. The decimal point position determining unit determines a position of a decimal point based on a size of a mask that has a plurality of filter coefficients. The image inputting unit receives image data indicative of an image having a plurality of pixels, the image data including a pixel value for each pixel. The calculating unit performs, while setting a decimal point to be fixed at the determined position, a convolution operation on a pixel value of each pixel and pixel values of peripheral pixels for the each pixel by using the filter coefficients of the mask to find an average peripheral pixel value for the each pixel.

REFERENCES:
patent: 6304294 (2001-10-01), Tao et al.
patent: 6658158 (2003-12-01), Fukuhara et al.
patent: 6741753 (2004-05-01), Moroney
patent: 6834125 (2004-12-01), Woodell et al.
patent: 6842543 (2005-01-01), Woodell et al.
patent: 6885482 (2005-04-01), Kubo et al.
patent: 6941028 (2005-09-01), Kimmel et al.
patent: 6947176 (2005-09-01), Kubo et al.
patent: 7251056 (2007-07-01), Matsushima
patent: 7298917 (2007-11-01), Sakatani et al.
patent: 7508550 (2009-03-01), Kameyama
patent: 7570390 (2009-08-01), Mitsunaga
patent: 7876474 (2011-01-01), Kondo
patent: 7885479 (2011-02-01), Kuno
patent: 7912308 (2011-03-01), Kuno
patent: 7920752 (2011-04-01), Kuno
patent: 2002/0131652 (2002-09-01), Yoda
patent: 2003/0026494 (2003-02-01), Woodell et al.
patent: 2003/0072496 (2003-04-01), Woodell et al.
patent: 2004/0052414 (2004-03-01), Schroder
patent: 2004/0091164 (2004-05-01), Sakatani et al.
patent: 2005/0074163 (2005-04-01), Shaked
patent: 2005/0226526 (2005-10-01), Mitsunaga
patent: 2006/0062562 (2006-03-01), Utagawa
patent: 2007/0040914 (2007-02-01), Katagiri et al.
patent: 2008/0107333 (2008-05-01), Mazinani et al.
patent: 2000-197052 (2000-07-01), None
patent: 2001-69525 (2001-03-01), None
patent: 2001-78025 (2001-03-01), None
patent: 2002-281347 (2002-09-01), None
patent: 2003-69822 (2003-03-01), None
patent: 2003-219182 (2003-07-01), None
patent: 2003-333331 (2003-11-01), None
patent: 2004-165840 (2004-06-01), None
patent: 3731577 (2005-10-01), None
patent: 2006-114005 (2006-04-01), None
L. Meylan and S. Süsstrunk, “Color image enhancement using a Retinex-based adaptive filter,” Proc. IS&T Second European Conference on Color in Graphics, Image, and Vision (CGIV 2004), vol. 2, pp. 359-363, 2004.
Japanese Official Action dated Sep. 14, 2010 together with a partial English language translation.
Japanese Official Action dated Nov. 24, 2010 together with a English language translation from U.S. Appl. No. 11/848,692.
Notice of Allowance dated Aug. 19, 2011 from related U.S. Appl. No. 11/864,251.
Japanese Decision of Rejection dated Feb. 22, 2011 together with partial English language translation from Japanese application 2006-235823 in related U.S. Appl. No. 11/848,692.
Jobson et al., “A Multiscale Retinex for Bridging the Gap Between Color Images and the Human Observation of Scenes”, IEEE Transaction of Image Processing, vol. 6, No. 7, Jul. 1997, pp. 965-976.
Hines et al., “DSP Implementation of the Retinex Image Enhancement Algorithm”, Proceedings of the SPIE Visual Information Processing XIII, vol. 5348 (2004), pp. 13-24.
U.S. Official Action dated Mar. 10, 2011 from related U.S. Appl. No. 11/864,251.
U.S. Official Action dated Jun. 23, 2011 from related application U.S. Appl. No. 12/057,838.

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