Patent EP0891077A2 successfully refreshed from Google Patents.
EP0891077A2
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EP
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Colour image processing apparatus and method
Assignee: Canon Inc
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Filing: 1998-07-08
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Granted: —
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Expires: 2018-07-08
Abstract
Abstract The invention is to obtain data under desired illumination with a limited memory capacity. There is provided an image processing method for converting data dependent on a first illuminating light into data dependent on a second illuminating light, the method comprises storing conversion data for plural illuminating lights of different characteristics, generating data indicating the proportion of synthesis of said plural illuminating lights of different characteristics, corresponding to the second illuminating light, and converting data dependent on the first illuminating light into data dependent on the second illuminating light, based on the conversion data for plural illuminating lights of different characteristics and the data indicating the proportion of synthesis.
Inventors
- 👤 Yoshinobu Shiraiwa
- 👤 Toshiyuki Mizuno
- 👤 Yumiko Ohsaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 20:51
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/56; H04N1/60; H04N1/6083; H04N1/6086; H04N1/6088
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
92 words
An image processing method for converting data
dependent on a first illuminating light into data
dependent on a second illuminating light, comprising
steps of: storing conversion data for plural illuminating
lights having different characteristics; generating data indicating the proportion of
synthesis of said plural illuminating lights having
different characteristics, corresponding to said second
illuminating light; and converting data dependent on said first
illuminating light into data dependent on said second
illuminating light, based on said conversion data for
plural illuminating lights having different
characteristics, and said data indicating the
proportion of synthesis.
Claim 2
Dependent Claim
19 words
An image processing method according to claim
1, wherein said plural illuminating lights are
different in color rendering property.
Claim 3
Dependent Claim
29 words
An image processing method according to claim
1, wherein said data indicating the proportions of
plural syntheses are stored in advance according to the
kinds of the illuminating light.
Claim 4
Dependent Claim
41 words
An image processing method according to claim
3, wherein the kind of said second illuminating light
is designated by the user and said data indicating the
proportion of synthesis are selected according to said
designated kind of the second illuminating light.
Claim 5
Dependent Claim
26 words
An image processing method according to claim
1, wherein said data indicating the proportion of
synthesis are generated according to a manual
instruction of the user.
Claim 6
Dependent Claim
30 words
An image processing method according to claim
1, wherein said data indicating the proportion of
synthesis are generated according to the output from a
sensor for measuring the illuminating light.
Claim 7
Dependent Claim
15 words
An image processing method according to claim
1, wherein said conversion data are matrix data.
Claim 8
Dependent Claim
99 words
An image processing apparatus for converting
data dependent on a first illuminating light into data
dependent on a second illuminating light, comprising: storage means for storing conversion data for
plural illuminating lights having different
characteristics; generation means for generating data indicating
the proportion of synthesis of said plural illuminating
lights having different characteristics, corresponding
to said second illuminating light; and conversion means for converting data dependent on
said first illuminating light into data dependent on
said second illuminating light, based on said
conversion data for plural illuminating lights having
different characteristics, and said data indicating the
proportion of synthesis.
Claim 9
Dependent Claim
82 words
A computer readable recording medium storing a
program said program comprising the steps of: storing conversion data for plural illuminating
lights having different characteristics; generating data indicating the proportion of
synthesis of said plural illuminating lights having
different characteristics, corresponding to said second
illuminating light; and converting data dependent on said first
illuminating light into data dependent on said second
illuminating light, based on said conversion data for
plural illuminating lights having different
characteristics, and said data indicating the
proportion of synthesis.
Claim 10
Dependent Claim
63 words
An image processing method comprising steps
of: setting an ambient lighting characteristic
coefficient according to a manual instruction; inputting image data dependent on an input device;
and effecting correction for the ambient lighting on
said inputted image data based on said input device, a
display device and said ambient lighting characteristic
coefficient, thereby achieving conversion into image
data dependent on said display device.
Claim 11
Dependent Claim
29 words
An image processing method according to claim
10, wherein said correction for the ambient lighting is
achieved by correction of color rendering based on said
ambient lighting characteristic coefficient.
Claim 12
Dependent Claim
42 words
An image processing method according to claim
11, wherein said correction of color rendering is
achieved by a weighted process on said conversion data
corresponding to the plural light sources having
different color rendering properties, based on said
ambient lighting characteristic coefficient.
Claim 13
Dependent Claim
28 words
An image processing method according to claim
10, wherein matrix coefficients relating to said
correction for the ambient lighting are calculated
according to said ambient lighting characteristic
coefficient.
Claim 14
Dependent Claim
20 words
An image processing method according to claim
13, wherein said calculated matrix coefficients are
registered according to a manual instruction.
Claim 15
Dependent Claim
45 words
An image processing method according to claim
10, further comprising a step of: setting the color temperature and the luminance of
the ambient light; wherein said correction for the ambient light is
achieved by a color adapted conversion according to
said color temperature and luminance.
Claim 16
Dependent Claim
70 words
An image processing apparatus comprising: setting means for setting an ambient lighting
characteristic coefficient according to a manual
instruction; input means for entering image data dependent on
an input device; and conversion means for effecting correction for the
ambient lighting on said entered image data based on
said input device, a display device and said ambient
lighting characteristic coefficient, thereby achieving
conversion into image data dependent on said display
device.
Claim 17
Dependent Claim
75 words
A computer readable recording medium storing
a program for executing an image processing method,
said program comprising steps of: setting an ambient lighting characteristic
coefficient according to a manual instruction; inputting image data dependent on an input device;
and effecting correction for the ambient lighting on
said inputted image data based on an input device, a
display device and said ambient lighting characteristic
coefficient, thereby achieving conversion into image
data dependent on said display device.
References Cited (Backward Citations)
No citation records indexed.
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