Exposure determining device for color image reproduction

Claim 1

A device for determining color image reproducing exposures for red, green and blue by using a plurality of exposure calculating formulas which are selected in accordance with scenes into which principal subject images or various color originals to be reproduced are classified, said device comprising, a color image monitor for displaying images of said color originals to be reproduced; a scanner for detecting three color densities of each picture element of said color originals, separately by color; scene information inputting means for inputting information on said classified scenes of said principal subject images of said color originals; position specifying means for specifying positions of respective parts of said principal subject images on said color image monitor; image area determining means for determining a predetermined size of area having a center at said specified position for each of said principal subject images; characteristic value calculating means for calculating image characteristic values for said principal subject images in accordance with said three color densities of picture elements by which said principal subject images are defined: exposure calculating means for calculating exposures by color in accordance with at least said calculated image characteristic values for said principal subject images by using one of said exposure calculating formulas which is selected in accordance with said classified scene of said principal subject image.

Claim 2

A device for determining color image reproducing exposures for red, green and blue by using a plurality of exposure calculating formulas which are selected in accordance with scenes into which principal subject images or various color originals to be reproduced are classified, said device comprising, a color image monitor for displaying images of said color originals to be reproduced; a scanner for detecting three color densities of each picture element of said color originals, separately by color; scene information inputting means for inputting information on said classified scenes of said principal subject images of said color originals; position specifying means for specifying positions of respective parts of said principal subject images on said color image monitor; image area determining means for determining a predetermined size of area having a center at said specified position for each of said principal subject images; characteristic value calculating means for calculating image characteristic values for said principal subject images in accordance with said three color densities of picture elements by which said principal subject images are defined: exposure calculating means for calculating exposures by color in accordance with at least said calculated image characteristic values for said principal subject images by using one of said exposure calculating formulas which is selected in accordance with said classified scene of said principal subject image.

Claim 6

A device for determining color image reproducing exposures for red, green and blue by using a plurality of exposure calculating formulas which are selected in accordance with scenes into which principal subject images of various color originals to be reproduced are classified, said device comprising: a color image monitor for displaying images of said color originals to be reproduced; a color scanner for detecting densities of each picture element of said color originals, separately by color; scene information inputting means for inputting information on said classified scenes of said principal subject images of said color originals; specifying means for specifying positions of respective parts of said principal subject images on said color image monitor; principal image area determining means for determining a predetermined size of area having a center at said specified position for each of said principal subject images; background image area determining means for determining a whole area, excepting said principal subject image area or a part of said whole area, as a background image area for a background image; characteristic value calculating means for calculating image characteristic values for said principal subject image area and said background image area in accordance with corresponding picture element densities included therein; basic exposure calculating means for calculating basic exposure values for three colors based on said calculated image characteristic values of said principal subject image and said background image by using a basic exposure calculating formula; compensation exposure calculating means for calculating compensation exposures values based on said calculated principal subject image characteristic values by using compensation exposure calculating formulas which are selected in accordance with said classified scenes of said principal subject images; correction exposure calculating means for calculating correction exposure values based on at least a density level of said principal subject images; and means for adding together said basic, compensation and correction exposure values to obtain actual color image reproducing exposures.

Claim 7

A device for determining color image reproducing exposures for red, green and blue by using a plurality of exposure calculating formulas which are selected in accordance with scenes into which principal subject images of various color originals to be reproduced are classified, said device comprising: a color image monitor for displaying images of said color originals to be reproduced; a color scanner for detecting densities of each picture element of said color originals, separately by color; scene information inputting means for inputting information on said classified scenes of said principal subject images of said color originals; specifying means for specifying positions of respective parts of said principal subject images on said color image monitor; principal image area determining means for determining a predetermined size of area having a center at said specified position for each of said principal subject images; background image area determining means for determining a whole area, excepting said principal subject image area or a part of said whole area, as a background image area for a background image; characteristic value calculating means for calculating image characteristic values for said principal subject image area and said background image area in accordance with corresponding picture element densities included therein; basic exposure calculating means for calculating basic exposure values for three colors based on said calculated image characteristic values of said principal subject image and said background image by using a basic exposure calculating formula; compensation exposure calculating means for calculating compensation exposures values based on said calculated principal subject image characteristic values by using compensation exposure calculating formulas which are selected in accordance with said classified scenes of said principal subject images; correction exposure calculating means for calculating correction exposure values based on at least a density level of said principal subject images; and means for adding together said basic, compensation and correction exposure values to obtain actual color image reproducing exposures.

Claim 10

A device for determining color image reproducing exposures for red, green and blue by using a plurality of exposure calculating formulas which are selected in accordance with scenes into which principal subject images of various color originals to be reproduced are classified, said device comprising: a color image monitor on which images of said color original ar displayed; a color scanner for detecting three color densities of each picture element of said color originals; scene information input means for inputting information on said classified scenes of said principal subject images of said color originals; area specifying means for specifying outlines of said principal subject images on said color image monitor; principal subject image area determining means for determining areas for said principal subject images in accordance with picture elements included within corresponding ones of said outlines; background image area determining means for determining a whole area, excepting said principal subject image area or a part of said whole area, as a background image area for a background image; characteristic value calculating means for calculating image characteristic values for said principal subject image area and said background image area in accordance with said three color densities of picture elements by which said principal subject and background image areas are defined; basic exposure calculating means for calculating basic exposure values for three colors based on said calculated image characteristic values of both said image areas by using a basic exposure calculating formula; compensation exposure calculating means for calculating compensation exposure values for said three colors based on said image characteristic values of said principal subject image area by using compensation exposure calculating formulas which are selected in accordance with said classified scenes of said principal subject images; correction exposure calculating means for calculating correction exposure values for said three colors in accordance with at least a density level of said principal subject images; and means for adding said basic, compensation and correction exposures values by color to obtain actual exposures for said three colors.

Claim 11

A device for determining color image reproducing exposures for red, green and blue by using a plurality of exposure calculating formulas which are selected in accordance with scenes into which principal subject images of various color originals to be reproduced are classified, said device comprising: a color image monitor on which images of said color original ar displayed; a color scanner for detecting three color densities of each picture element of said color originals; scene information input means for inputting information on said classified scenes of said principal subject images of said color originals; area specifying means for specifying outlines of said principal subject images on said color image monitor; principal subject image area determining means for determining areas for said principal subject images in accordance with picture elements included within corresponding ones of said outlines; background image area determining means for determining a whole area, excepting said principal subject image area or a part of said whole area, as a background image area for a background image; characteristic value calculating means for calculating image characteristic values for said principal subject image area and said background image area in accordance with said three color densities of picture elements by which said principal subject and background image areas are defined; basic exposure calculating means for calculating basic exposure values for three colors based on said calculated image characteristic values of both said image areas by using a basic exposure calculating formula; compensation exposure calculating means for calculating compensation exposure values for said three colors based on said image characteristic values of said principal subject image area by using compensation exposure calculating formulas which are selected in accordance with said classified scenes of said principal subject images; correction exposure calculating means for calculating correction exposure values for said three colors in accordance with at least a density level of said principal subject images; and means for adding said basic, compensation and correction exposures values by color to obtain actual exposures for said three colors.

Claim 14

A device for determining color image reproducing exposure values for red, green and blue by using a plurality of exposure calculating formulas which are selected in accordance with scenes into which principal subject images of various color originals to be reproduced are classified, said device comprising: a color image monitor for displaying images of said color original to be reproduced; a scanner for detecting three color densities of each picture element of each of said color originals, separately by color; image information inputting means for inputting image information on said principal subject image of said each of said color originals; specifying means for specifying positions of respective parts of each of said principal subject images on said color image monitor; image area determining means for determining a principal subject image area by detecting picture elements having at least colors or color densities similar to that of said specified positions; characteristic value calculating means for calculating image characteristic values for said principal subject image area; exposure calculating means for calculating said three color image reproducing exposure values by substituting said calculated image characteristic values in said selected exposure calculating formula.

Claim 15

A device for determining color image reproducing exposure values for red, green and blue by using a plurality of exposure calculating formulas which are selected in accordance with scenes into which principal subject images of various color originals to be reproduced are classified, said device comprising: a color image monitor for displaying images of said color original to be reproduced; a scanner for detecting three color densities of each picture element of each of said color originals, separately by color; image information inputting means for inputting image information on said principal subject image of said each of said color originals; specifying means for specifying positions of respective parts of each of said principal subject images on said color image monitor; image area determining means for determining a principal subject image area by detecting picture elements having at least colors or color densities similar to that of said specified positions; characteristic value calculating means for calculating image characteristic values for said principal subject image area; exposure calculating means for calculating said three color image reproducing exposure values by substituting said calculated image characteristic values in said selected exposure calculating formula.

Claim 24

A device for determining color reproducing exposures for red, green and blue by using a plurality of exposure calculating formulas which are selected in accordance with scenes into which principal subject images of various color originals to be reproduced are classified, said device comprising: a color monitor for displaying images of said color originals to be reproduced; a scanner for detecting three color densities of each picture element of said color originals, separately by color; scene information inputting means for inputting information on said classified scenes of said principal subject images of said color originals; image size information inputting means for inputting information on a size of each of said principal subject images; density level information inputting means for inputting information on a density level of said each of said principal subject images; position specifying means for specifying a position of a part of said each of said principal subject images on said color image monitor; judging area determining means for determining a judging area for said each of said principal subject images in accordance With said specified position and said size of said each of said principal subject images; means for determining a color definition area on each of said classified scenes of said principal subject images and a density of said specified position said color definition area defining particular colors of picture elements by which said each of said principal subject images is defined; principal subject image area determining means for determining an area for said each of said principal subject images by detecting picture elements having colors or densities falling within said color definition area included in said judging area; calculating means for calculating characteristic values for said each of said principal subject images in accordance with said picture elements included in said principal subject image area; compensation exposure calculating means for calculating basic exposure values for said three colors based on said principal subject image characteristic values by using an exposure calculating formula selected in accordance with said classified scene of said principal subject image; calculating means for calculating characteristic values for a background image area which is defined by a whole area excepting said principal subject image area or a part of said whole area; basic exposure calculating means for calculating basic exposure values for said three colors based on said background image characteristic values; correction exposure calculating means for calculating correction exposure values for said three colors in accordance with a combination of said classified scene, size and density level of said principal subject image; and means for adding together said basic, compensation and correction exposure values by color to obtain said color image reproducing exposures for said three colors.

Claim 25

A device for determining color reproducing exposures for red, green and blue by using a plurality of exposure calculating formulas which are selected in accordance with scenes into which principal subject images of various color originals to be reproduced are classified, said device comprising: a color monitor for displaying images of said color originals to be reproduced; a scanner for detecting three color densities of each picture element of said color originals, separately by color; scene information inputting means for inputting information on said classified scenes of said principal subject images of said color originals; image size information inputting means for inputting information on a size of each of said principal subject images; density level information inputting means for inputting information on a density level of said each of said principal subject images; position specifying means for specifying a position of a part of said each of said principal subject images on said color image monitor; judging area determining means for determining a judging area for said each of said principal subject images in accordance With said specified position and said size of said each of said principal subject images; means for determining a color definition area on each of said classified scenes of said principal subject images and a density of said specified position said color definition area defining particular colors of picture elements by which said each of said principal subject images is defined; principal subject image area determining means for determining an area for said each of said principal subject images by detecting picture elements having colors or densities falling within said color definition area included in said judging area; calculating means for calculating characteristic values for said each of said principal subject images in accordance with said picture elements included in said principal subject image area; compensation exposure calculating means for calculating basic exposure values for said three colors based on said principal subject image characteristic values by using an exposure calculating formula selected in accordance with said classified scene of said principal subject image; calculating means for calculating characteristic values for a background image area which is defined by a whole area excepting said principal subject image area or a part of said whole area; basic exposure calculating means for calculating basic exposure values for said three colors based on said background image characteristic values; correction exposure calculating means for calculating correction exposure values for said three colors in accordance with a combination of said classified scene, size and density level of said principal subject image; and means for adding together said basic, compensation and correction exposure values by color to obtain said color image reproducing exposures for said three colors.