Abstract: A heat-developable photosensitive material having on a support at least one light-sensitive layer comprising an organic silver salt, a light-sensitive silver halide and a reducing agent and at least one light-insensitive layer, which comprises an antihalation dye causing no decoloration by heat and provides tone represented by an inequality L*?92 on the CIELAB space in a background after heat development.

Abstract: The multispectral image compressing method performs logarithmic conversion of a multispectral image and segmentation of the multispectral image into a plurality of tile images to obtain logarithmically converted tile image data, performs principal component analysis on the logarithmically converted tile image data of respective tile images to obtain for each tile image a principal component number of sets of principal component vectors and principal component images based on the multispectral image, determines from the plurality of sets, for each tile image, an optimum principal component number of sets of optimum principal component vectors and corresponding optimum principal component images that optimally represent image information about the multispectral image, thereby, the image data for the multispectral image is compressed to the optimum principal component number, the optimum principal component images and optimum principal component vectors for each tile image.

Abstract: A computer readable medium including a digital image print support program that is executable in a computer is used for determining which one of plural printers is suitable for printing an image to be printed. The program has: a first step of dividing an area of the image to be printed into a first image area where a defect is conspicuous, and a second image area where a defect is inconspicuous, and obtaining an area rate of the first image area or the second image area; and a second step of outputting a result of comparison of the area rate with a threshold. A printer is selected in accordance with an output result, and then a less-defective print image can be obtained.

Abstract: The image processing method and device photograph a subject or transparent image to acquire calorimetric values of a subject image, acquire chromaticity information and illuminance information of a light source illuminating the subject and the transparent image, perform on the calorimetric values of the subject image chromatic adaptation correction based on the chromaticity information and the acquired illuminance information and contrast correction based on the illuminance, and correct the corrected calorimetric values to be output by an amount of flare in outputting the subject image, thereby enabling faithful reproduction of appearance.

Abstract: The multi-band image photographing method and apparatus photograph a subject by dividing a photographing wavelength region into plural bands and obtain spectral images of the subject corresponding to the respective divided plural bands. The method and apparatus detect a sensitivity balance among the respective plural bands from photographing data of each of the spectral images obtained by preliminary photographing performed prior to main photographing, determine photographing conditions for the respective plural bands based upon the detected sensitivity balance, and perform the main photographing in accordance with the determined photographing conditions to photograph a multi-band image. The program is used to cause a computer to execute this method or part thereof.

Abstract: The multispectral image compressing method segments a multispectral image into a plurality of tile images, performs principal component analysis on the respective tile images to obtain for each tile image a plurality of sets of principal component vectors and principal component images for the multispectral image, determines from the plurality of sets, for each tile image, an optimum principal component number of sets of optimum principal component vectors and the corresponding optimum principal component images that optimally represent the image information about the multispectral image, whereby the image data for the multispectral image is compressed to the optimum principal component number, the optimum principal component images and the optimum principal component vectors for each tile image, as well as the relevant tile image information.

Abstract: An image forming apparatus records an image on a photosensitive material by controlling a light emission amount from a plurality of light emission elements that each emit light in accordance with a supplied light emission control signal. The apparatus has a control signal generation unit and a first and second signal generation sections and a signal switching section. The control signal generation unit generates a first light amount control signal from a density modulation. The second signal generation section generates an ON/OFF control signal and a second light amount control signal as a pair of signals from a combination of a density modulation and an area modulation. The signal switching section generates a light emission control signal by performing signal switching between the first light amount control signal and the pair of the signals. The exposure by the light emission is overlaid.

Abstract: The discriminating method utilizes first to third sensors respectively having spectral sensitivities corresponding to three primary colors and a fourth sensor having a spectral sensitivity that does not overlap the spectral sensitivities corresponding to the three primary colors as sensors constituting an image pickup system, and discriminates a light source type of a photographic light source by using information obtained by the first to fourth sensors. The image forming method corrects image data of an input image using the light source type discriminated by the above light source type discriminating method.

Abstract: A heat-developable photosensitive material having on a support at least one light-sensitive layer comprising an organic silver salt, a light-sensitive silver halide and a reducing agent and at least one light-insensitive layer, which comprises an antihalation dye causing no decoloration by heat and provides tone represented by an inequality L*≧92 on the CIELAB space in a background after heat development.

Abstract: The image processing method and apparatus perform data conversion so as to adapt a color image input from image input means to a predetermined output medium when the color image is to be output as a hardcopy by image output means to the predetermined output medium. The method and apparatus use data of a brightest point in the image output means for a chromatic color part of input image data while using data of a chromaticity point allowing achievement of a preferred whiteness in the image output means, for an achromatic color part of the input image data, and thereby perform the data conversion on the input image data The program executes the image processing method.

Abstract: The color image recording medium for recording and preserving a color image as a hard copy includes a transmission type image recording material for recording the color image and a reflective observation diffuser detachable to the transmission type image recording material. The color image is observed through reflected light by fitting the reflective observation diffuser to an under side of the transmission type image recording material, and the color image is read through transmission light from the transmission type image recording material by removing the reflective observation diffuser from the under side of the transmission type image recording material. The color image recording method compresses a density range of image signals of a reproduced image of a color image by approximately half and records the color image on a transmission type image recording material with the compressed density range.

Abstract: The multispectral image compressing method performs logarithmic conversion of a multispectral image and segmentation of the multispectral image into a plurality of tile images to obtain logarithmically converted tile image data, performs principal component analysis on the logarithmically converted tile image data of respective tile images to obtain for each tile image a principal component number of sets of principal component vectors and principal component images based on the multispectral image, determines from the plurality of sets, for each tile image, an optimum principal component number of sets of optimum principal component vectors and corresponding optimum principal component images that optimally represent image information about the multispectral image, thereby, the image data for the multispectral image is compressed to the optimum principal component number, the optimum principal component images and optimum principal component vectors for each tile image.