Abstract:
In an image processing method for carrying out image processing on digital image signals, which have been acquired with digital cameras, image processing is carried out on the digital image signals and under different image processing conditions in accordance with kinds of the digital cameras. The image processing is thereby carried out such that reproduced images having good image quality may be obtained regardless of the kinds of the digital cameras. An apparatus for carrying out the image processing method comprises an input device for inputting pieces of information, which represent kinds of the digital cameras, and an image processing unit for carrying out image processing on the digital image signals and under different image processing conditions in accordance with the kinds of the digital cameras, which are represented by the pieces of information inputted from the input device.
Abstract:
An image processing method for creating a reproduced image by executing image processing on digital image data obtained by a digital camera. This method determines first a density conversion condition for the digital image, determines next a gradation conversion condition for the image on the basis of the density conversion condition, modifies the digital image on the basis of at least one of the density and the gradation conversion conditions, and thus creates the reproduced image. The method may initially separate the digital image data into density component data and color component data, determine the density and gradation conversion conditions by using the density component data instead of the digital image data, modify the density component data in accordance with the density and gradation conversion conditions and synthesize the modified density component data with the color component data.
Abstract:
By the present invention, on the basis of information read from a magnetic recording section of a negative film (Step 200), when it is judged that there are a plurality of negative images to be exposed by the same exposure amount (the judgment in Step 212 is affirmative), a film type is identified to determine the film base density thereof, and a predetermined reference density value is added to the film base density so as to obtain a density control amount which controls the density of a print image (Steps 216 through 220). Thereafter, a color balance mean value of a large number of negative images of the same type is detected and a weighted mean value of a color balance mean value among a plurality of negative images to be exposed and the detected color balance value to obtain a color control amount (Step 222). Then, a common exposure amount is computed from the thus obtained density control amount and the color control amount (Step 224) for exposing the negative images to be exposed by the same exposure amount onto a printing paper by the common exposure amount (Step 278).
Abstract:
A photographic printer effects a second printing operation for one original frame (60) on a developed photo film (10), after a first printing operation is effected. First correcting information is used in the first printing operation for correcting an exposure amount of the original frame. To produce a photographic print, first and second equipment information is predetermined, which is associated respectively with the first and second printing operations. The first and second equipment information represents an ID of each photographic printer for effecting the first and second printing operation, or represents an ID of a printer group to which each printer belongs. The first correcting information of the original frame and the first equipment information is written to a magnetic recording layer (10c) in the first printing operation. The magnetic recording layer is formed on the photo film. The first correcting information of the original frame and the first equipment information is read from the magnetic recording layer before the second printing operation. It is determined whether the first equipment information coincides with the second equipment information. If the first equipment information coincides with the second equipment information, then the second printing operation of the original frame is effected by use of the first correcting information.
Abstract:
A color copying apparatus for constantly obtaining a high-quality print irrespective of a change in film characteristics due to deterioration over time and the like is disclosed. A reference image recorded on the film is photometrically measured to determine film characteristic data. After logarithmically transformed values of photometric values of an original image on one film set in a printing position have been stored, normalizing conditions are determined on the basis of average image data, and a transformation formula or table for transformation between the film characteristic data and image data is generated in correspondence with a film type. Pixels are then selected from the original image set in the printing position, and a characteristic amount of the image is calculated and is made to correspond to print characteristic data by means of the transformation formula or table. An abnormal frame is then determined by using the film characteristic data and the characteristic amount of the image, and an exposure amount is determined by setting coefficients of an exposure calculating formula as a result of the determination, so as to effect exposure control.
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. On the basic of the spectral distribution estimated and by using an effective spectral sensitivity distribution of the copying light-sensitive material, a calculation is made of a transmission density which is equivalent to a transmission density obtained when an image on the film to be printed is photometrically measured by a photometric device having a spectral sensitivity distribution identical to a spectral sensitivity distribution of the copying light-sensitive material; and exposure amount for printing the image on the film to be printed onto the light-sensitive material is determined on the basis of the transmission density calculated.
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. The method includes the steps of: for a photosensitive material for photographing, which has been used for photographing and on which an image has been exposed and which has been immersed into and processed by a processing solution for photosensitive materials for photographing at an image forming device, dividing at least one of the image developed on the photosensitive material for photographing and a portion of the photosensitive material for photographing other than the image into a plurality of colors, and measuring a density of each color, and storing a measured density value of each color, and repeating the steps of dividing, measuring and storing; and determining a state of the processing solution for photosensitive materials for photographing of the image forming device on the basis of an average value of the stored density values, which average value is calculated each time a predetermined period of time elapses. Accordingly, the state of the processing solution for photosensitive materials for photographing can be determined without using a control strip or the like, and can be managed easily and appropriately.
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. Therefore, the image data of the feature image region is extracted as the feature image data, and the light exposure is determined depending upon the extracted data to create a printed image. As a result, a feature image portion can be printed in proper density, or in proper density and color.
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.