Abstract: In an image reproducing apparatus, an image recorded on a negative film is subjected to optical measurement by an optical measuring device. The data obtained by the optical measurement is stored in a photometric data memory for each type of film which is judged by a DX code reader and a film type detecting device. In the apparatus, a difference in characteristics between a reference film and the negative film is calculated by a film characteristic difference calculating device, and the image characteristic amount of the image is calculated by an image characteristic amount calculating device. In a film type correction amount calculating device, a correction value is calculated based on the calculated difference in the film characteristics and the image characteristic amount to compensate for a decrease in the quality of the printed image due to the difference in the film characteristics.

Abstract: A method of making a high-quality print avoids carrying out photometry twice on images on a film. In a first transporting process for transporting the film in a first direction, photometry is carried out on all of the images on the film that are to be copied by dividing the images into a number of pixels, logarithmically transforming thus obtained photometric values into photometric data sets, and storing all thus transformed photometric data sets in correspondence with individual images on the film. At least some of the photometric data sets are used to determine a condition of selection for selecting photometric data of pixels. The photometric data thus selected is used in determining the exposure amount of the images, and photographic prints are made during a second transporting process using the determined exposure amounts.

Abstract: A plurality of principal-component spectral distributions are determined in advance by analyzing spectral distributions of a multiplicity of sample films; light transmitted through a film to be estimated is measured by spectrally diffracting the transmitted light into wavelengths of different bands or into different wavelength bands the number of the wavelengths or wavelength bands being equivalent to that of the plurality of principal-component spectral distributions; coefficients for expressing the spectral distribution of the film to be estimated as a linear sum of the plurality of principal-component spectral distributions are determined on the basis of photometric values of the respective wavelengths wavelength bands and the plurality of, principal-component spectral distributions; and the spectral distribution of the film to be estimated is estimated by determining the linear sum of the plurality of principal-component spectral distributions by using the coefficients obtained.

Abstract: A photographic printer has an exposure station, in which a frame of a photographic film and color photographic paper are set. A light source is disposed in opposition to the color paper with reference to the photographic film set in the exposure station, and constituted by LED elements. The LED elements are disposed in a matrix for emitting light of red, green and blue colors. The light source illuminates the frame from behind. The color paper is exposed by the light transmitted through the frame, to print the frame recorded on the photographic film to the color paper. In a preferred embodiment, a drive signal is determined individually for driving respective the LED elements. The drive signal is applied to the respective LED elements.

Abstract: A photographic processing condition managing method applied to an image forming device equipped with a function for immersing a photosensitive material for photographing into a processing solution for photosensitive materials for photographing so as to process the photosensitive material for photographing.

Abstract: An apparatus for determining exposure amount in a copying apparatus includes: a photometric measuring device for effecting photometry by dividing an image recorded on a recording material into a multiplicity of segments and by separating each segment into a multiplicity of colors consisting of four or more predetermined colors; a storage device for storing photometric data on the multiplicity of colors obtained from photometry by the photometric measuring device; an image-density calculating device for calculating an image density equivalent to an image density obtained by photometrically measuring the image with the photometric measuring device exhibiting a spectral sensitivity distribution equivalent to that of a copying material, on the basis of the photometric data on the multiplicity of colors and the spectral sensitivity distribution of the copying material; a correction-amount determining device for determining a correction amount with respect to the image density on the basis of the photometric data o

Abstract: A photograph printing method for printing on a photographic printing paper a plural number of images which are photographed on a film, the method comprising steps of detecting photographing information of the film, determining frames of the film including the images having equal or similar photographing conditions each other by use of the photographing information, and determining equal or similar amount of print conditions corresponding to the same or similar photographing conditions of the frames thus determined, and printing the images by use of the equal or similar amount of print conditions thus determined.

Abstract: A method of determining light exposure is provided to read information in relation to a color original image and dividing the color original image into many picture elements to analyze the respective picture elements into three color light of red light, green light and blue light for photometry, find a histogram in relation to hue value depending upon data obtained by the photometry and divide the found histogram for each crest. Further, the method is provided to decide to which of the divided crests the respective picture elements of the color original image belong so as to distribute the picture element into a corresponding cluster, and divide the color original image for each cluster, select the most adaptable region to information in relation to the color original image which is read from the divided region as a feature image region. The method is still further provided to determine the light exposure to copy material depending upon image data in the feature image region.

Abstract: A method of making photographic prints wherein photographic data relating to photographic conditions of an original frame is recorded on a photographic film at the time of photographing the original frame, so as to determine the print exposure amount for printing the original frame. When it is determined with reference to the photographic data that a primary subject of the original frame has a proper density on the photographic film, the original frame is printed at a basic print exposure amount which is determined without using density data of the original frame. If it is determined with reference to the photographic data that the basic print exposure amount should be corrected for the original frame, an exposure correction amount is calculated based on the photographic data and/or the density data of the original frame.

Abstract: In recording an image on a recording medium such as photographic film, position information used for the detection of a principal image is recorded on the recording medium. The position information is read when a hard copy of the image is produced. A characteristic value is derived from within the area of the principal image detected in accordance with the position information. A print exposure amount used for producing a hard copy is determined in accordance with the characteristic value. The position information may be the information directly or indirectly representing the position of the primary image. The indirect representation may be a combination of a subject distance and a focal length of a taking lens. This combination determines a reference size of a face or figure image on a frame. By detecting an image having the same size as the reference size, the principal image such as a facial image or a figure image can be identified.

Abstract: An image frame to be printed is divided into a plurality of portions, and the portions are photometrically measured. Photometric data necessary to determine an exposure condition is selected. Weighting factors, which are to be applied respectively to selected photometric data, to data obtained from first data obtained by photometric measuring of a plurality of films in accordance with film type identifying codes, and to data determined from second data obtained by photometric measuring of image frames to be printed which are recorded on a single film, are set based on the first data. The exposure condition is determined based on a value obtained by addition of respective weighted data. Hence, influence of color failure can be eliminated, and variations in film characteristics due to deterioration over time and the like can be eliminated. Accordingly, high-quality prints are thereby consistently obtained.

Abstract: Utilizing fuzzy theory, the exposure is determined based on an exposure operational formula defined for each of a plurality of previously classified patterns of a color original image. The color original image is divided into a multiplicity of portions for photometric purposes and, for the resulting photometric data, a plurality of features are evaluated. Utilizing fuzzy theory, a coincidence factor with a judging condition for judging the magnitude of the feature value is evaluated for each of the feature values. A coincidence factor for the pattern is evaluated from those coincidence factors to determine a weight for the pattern. Using this weight, a weighted mean of the exposures which is determined from the exposure operational formula is calculated to obtain a specific exposure.

Abstract: An exposure determination method for determining exposure by extracting feature image data including person's face data. A color original image is divided into many picture elements, each picture element is resolved into three colors of red, green, and blue to photometrically measure them, a histogram of hue values is obtained in accordance with the data obtained through photometry, and the obtained histogram is divided into mountains. Picture elements are classified into groups corresponding to the divided mountains by judging which divided mountain each picture element of the color original image belongs to, the color original image is divided for each group, and at least one of the divided regions is selected to extract the data for the selected region as feature image data. Then, exposure for a copying material is determined in accordance with the extracted feature image data.

Abstract: A photosensitive material for managing condition according to the present invention is provided with a data recording portion on which condition managing data is recorded. Therefore, it becomes possible to readily make the photosensitive material and this condition managing data correspond. In addition, an apparatus for processing the photosensitive material includes a photometric unit for photometrically measuring the image of the photosensitive material, a read unit for reading data on the data recording portion and a managing unit for conducting a condition management with the photometric value and the read data. In consequence, the condition management becomes easy.

Abstract: Object brightness color information is recorded on a recording medium such as a photographic film at the time of taking an object image. In making a photoprint, the brightness information or color information is read from the photographic film, and is used for the calculation of a print exposure amount. The brightness information is used to convert photometric values at respective measurement points within a frame into brightness information. The color information is used to obtain the actual color of an object at respective measurement points. In one embodiment, effective measurement points are determined in accordance with the value of brightness information at respective measurement points, and characteristic values to be used for the calculation of a print exposure amount are derived by using the effective measurement points.

Abstract: A photographic printing method in which a plurality of image frames photographed on a negative film by a camera, which photometrically measures different areas on an object by a plurality of photometric elements and which determines an exposure, is printed onto photographic paper. Printing processing is effected at an average exposure of the plurality of image frames. Namely, all of the image frames of the negative film are photometrically measured. Average densities of each of R, G, and B of an entire image surface are calculated. An average value of the average densities of all of the image frames of the negative film is calculated. An amount of printing exposure is determined using this average value. Printing processing of all of the image frames is effected at this amount of printing exposure. Accordingly, a large proportion of prints having appropriate densities can be obtained.

Abstract: The position of a principal image within a frame is designated manually or in association with the operation of the automatic focussing mechanism. The position information of the principal image is recorded on a photographic film when a subject is photographed. In obtaining a photoprint, the position information is read from the frame to be printed, and the principal image within the frame is identified. A characteristic value used for calculating an exposure amount is derived from the identified principal image, so as to execute an exposure control emphasizing the principal image.

Abstract: A photographic printing method for printing a film image onto photographic paper by estimating the color temperature of a subject illuminant, and by changing, in correspondence with the color temperature estimated, a degree of correction of the image density in which an improper color balance occurs in color reproduction with a change in the color temperature of the subject illuminant. By changing the degree of correction in correspondence with the estimated color temperature, it is possible to allow the hues of the subject illuminant to be reflected on the prints. In addition, it is also possible to change the degree of correction in correspondence with the light-source-color information indicative of the photographer's intent in expressing the hues of the original scene.

Abstract: An exposure controlling apparatus includes a sensor for effecting photometry by separating light from an original picture into a plurality of separated components; a storage device for storing a value concerning the spectral sensitivity of the sensor and a value concerning the spectral sensitivity of a copying sensitive material to be copied; an estimating device for estimating a spectral characteristic of the original picture on the basis of a photometric value of the sensor and the value concerning the spectral sensitivity of the sensor stored in the storage device; and a controller for determining a synthetic value which is equivalent to a value measured by a sensor having a spectral sensitivity distribution identical with or similar to a spectral sensitivity distribution of the copying sensitive material on the basis of the spectral characteristics of the original picture estimated and the value concerning the spectral sensitivity of the copying sensitive material, and for controlling exposure amount on t

Abstract: A printing method using a photographic printer which effects at an identical or proximate position photometry conducted by dividing an image frame into a multiplicity of segments and exposure based on data obtained by photometry. The process of effecting both photometry, and selecting and storing data necessary for determination of exposure amount is repeated until the number of items of the data stored reaches a predetermined value or more. When the number of items of the data stored has reached the predetermined value or more, an image frame to be printed is positioned in an exposing position, and exposure is effected on the basis of photometric data on the image frame and the stored data.