Fuji Photo Film Company, Limited

Fujifilm Corporation

Hitoshi Urabe

Osamu Shimazaki

Kazuo Shiota

Takao Shigaki

Setsuji Tatsumi

Seiichiro Morikawa

Daisuke Nakaya

Kazuhiko Akimoto

Hideaki Kimura

Masahiko Mizuno

Hiroshi Horikawa

Hisashi Kudo

Yoshiki Kawaoka

Makoto Hara

Tadashi Miyakawa

Katsuo Ogura

Toru Shinada

Masayuki Matsumoto

Hideki Morikawa

Katsutoshi Yako

Naoki Ishikawa

Hiroshi Korikawa

Shuichi Otsuka

Color shift correction comprising: (a) imaging an object and acquiring image data of each of a plurality of color planes including planes of primaries; (b) determining whether a color of each of pixels of color image data obtained by combining the image data of each of the plurality of color planes is imaginary; (c) counting the number of pixels determined in step (b) to have imaginary color and calculating the number of pixels within one frame which have imaginary color; (d) repeating a process of performing a pixel shift operation, relative to image data of each of the plurality of color planes, and performing steps (b) and (c) using the image data of each of the plurality of color planes having undergone the pixel shift operation, and obtaining, a pixel shift operation for the color planes; and (e) correcting the image data of the plurality of color planes on the basis of the pixel shift operation.

Color image color shift correction method and color image imaging apparatus

The image storing apparatus stores an image uploaded from a customer via a network on a large-capacity medium by associating it with customer information indicating the customer, image attribute information or image selection information so as to manage the image of the customer. And if capacity, quantity, a recording period or a current date of the images of a certain customer exceeds a predetermined threshold, one image or a plurality of images of the customer are moved to another medium so as to secure storage capacity of the above described large-capacity medium.

Image storing apparatus and image storing program

This invention is a method for forming halftone screen to prepare a multi-color separated halftone gradation image which is printable and reproducible by superposing an image signal obtained by scanning an original comprising continuous-tone color images with a halftone screen signal generated electrically, which comprises the steps of exposing and scanning a light spot of a predetermined size at a predetermined pitch to form halftone dots, and changing the number of said pitch so as to obtain an arbitrary screen line number. Further, this invention relates to a light beam scanning apparatus for forming halftone screen to prepare a multi-color separated halftone gradation image which is printable and reproducible by superposing an image signal obtained by scanning an original comprising continuous-tone color images with a halftone screen signal generated electrically, which comprises a first laser diode for emitting a synchronizing laser beam, a second laser diode for emitting a recording laser beam, a galvanometer for inputting the synchronizing laser beam and the recording laser beam through a collimator and a mirror, a synchronizing signal generator and an image recording section for inputting laser beams reflected and deflected by said galvanometer, a PLL multiplier for outputting a synchronizing signal by inputting an electric signal from said synchronizing signal generator, and an output controlling section for driving the second laser diode in accordance with the image signal and the synchronizing signal.

Method for forming halftone screen and apparatus therefor

An image processing system which includes an input controller having a CPU adapted to dot and compress density or tone data for an image read out by an input unit and for temporarily staying said compressed image data at a buffer; a work station providing a second CPU adapted to picture-edit not only a code information edited by an editing input unit but also the image data by the use of an input operating means and a display means; a file server including a third CPU connected to the input controller and the work station by bus lines and for storing the image data, code information and edited data picture-edited by the work station in the file server; and an image setter having a fourth CPU for reading out the edited data stored in the file server and subjecting the edited data to a required data processing, thereby outputting an image over an image output unit characterized in that the input controller, the file server, the work station and the image setter are individually and independently subjected to an information processing.

Image processing system

This invention is an image processing system which includes an input controller having a CPU adapted to dot and compress density or tone data for an image read out by an input unit and for temporarily staying said compressed image data at a buffer; a work station providing a second CPU adapted to picture-edit not only a code information edited by an editing input unit but also the image data by the use of an input operating means and a display means; a file server including a third CPU connected to the input controller and the work station by bus lines and for storing the image data, code information and edited data picture-edited by the work station in the file server; and an image setter having a fourth CPU for reading out the edited data stored in the file server and subjecting the edited data to a required data processing, thereby outputting an image over an image output unit characterized in that the input controller, the file server, the work station and the image setter are individually and independently subjected to an information processing.

Apparatus and method for processing huge image information at high speed

This invention method performs data compression for dot image data by utilizing the redundancy based on spacial correlation of images and correlation of dot patterns. More particularly, a threshold matrix is rearranged in array according to a predetermined reference, the threshold matrix being used to convert input image data into dot data, so as to output the same logical values continuously from the top and/or from the end of dot data array, and simultaneously dot data are grouped in the unit of a predetermined bits so as to count the number of units having the same and continuous logical values from the top and/or from the end to thereby effectively compress data of dot images by a perfect reproduction system or a non-perfect reproduction system.

Compression method for dot image data

Tone correction for input video signals is performed on the basis of look-up table data. The state of color tone is decided by using chroma signals each corresponding to one of input video signals, and a luminance signal produced from the input video signals. In response to the particular state decided, signals are produced by applying color correction level adjustment to the input video signals. A highlight point and a shadow point are set up based on one of such adjusted signals so as to produce look-up table data for each of the input video signals. This allows input video data to be subjected to tone correction which corresponds to particular photographing conditions, thereby eliminating overcorrection or undercorrection. Hence, the operator's decision as to the state of color tone is needless so that the ease of operation is promoted.

Method of and apparatus for executing tone correction on an image

The gradation correction of input video signals is conducted in the gradation correctors based on lookup table data. The cumulative histograms of the input video signals are generated in cumulative histogram generators to set highlight points and shadow points. Based on the highlight and shadow points, the standard lookup table data stored in the standard lookup table storage is converted in lookup table data associated with the input video signals and outputted to gradation correctors. According to this method, an appropriate gradation correction can be achieved depending on the input video signals. The standard lookup table storage need only be loaded with the standard lookup table data, namely, a great volume of lookup table data need not be stored.

Method of and apparatus for processing an image with gradation

A color image signal processing method for a color image input/output system reads an original by an image input section and corrects the color and gradation of the thus obtained image signals and feeds output density signals for each color to an image output device. The processing method includes the steps of calculating differences between desired finished densities and the output density signals at specified points on the original which are obtained by converting input density signals on the specified points based upon reference gradation conversion curves and then prepares characteristic curves of the differences with respect to the output density signals using the same functions for the respective colors and then prepares corrected gradation conversion curves by adding the reference gradation conversion curves to the functions. The functions are then determined so that the corrected gradation conversion curves are within a specified inclination range so as to thereby correct a gradation conversion table as well as correcting a color correction table by limiting the values of color correction coefficients so as to remove color distortion of output images.

Color image signal processing method

A method and process for processing picture image signals detects color separation signals of a color original image and then respectively converts these color separation signals into digital color separation signals. These digital color separation signals are then multiplied by predetermined coefficients and the results of these multiplications are sequentially accumulated for equalizing the levels of the digital color separation signals at a grey point of the original image so as to thereby obtain digital color separation signals which are converted to equivalent neutral densities. Hue signals of yellow, green, cyan, blue, magenta, and red which divide a color space into six hues are obtained from the digital color separation signals which are converted to the equivalent neutral densities. The hue signals are multiplied by predetermined color correction coefficients and the results thereof accumulated for color correction signals on yellow, magenta, and cyan. The digital color separation signals which are converted to the equivalent neutral densities are added to the color correction signals so as to thereby obtain selective color correction signals for recording the original image.

Method and apparatus for processing picture image signals

An image processing apparatus comprising positive and negative original input signal processing sections respectively converting positive and negative signals obtained by photoelectric scanning of positive and negative originals into positive density signals, and a color processing section for color-processing the positive density signals. The circuits used in the positive original input signal processing section are preferably all included as well in the negative original input signal processing section, so that common circuits may be employed for the two processing sections. This is similarly the case with the positive and negative image output sections. The apparatus also has a positive image output section for converting the output signal of the color processing section into a light amount control signal for a light source for reproducing a positive image, and a negative image output section for converting the output signal of the color processing section into a negative density signal and then into a light amount control signal for forming an intermediate negative so that a desired density is obtained on an ultimate printing photosensitive material when the intermediate negative is printed thereon. During processing in the negative original input signal processing section, a negative original density signal is converted into a density signal representing a corresponding positive image such that the weight of ratio of the Y, M and C color signals is always 1:1:1 for a gray original.

Apparatus for generating positive or negative image output signals from

Apparatus for recording a still image includes an input unit for repeatedly receiving video signals representative of a still image, a memory capable of storing video signal data of at least one picture frame of the received video signals, a control unit for controlling the writing into and reading out of the memory, and a recorder for recording the video signal data read out of the memory on a picture recording medium in the form of a visual image. The control unit performs a plural number of cyclic operations of storing the video signals received by the input unit in the memory timed with the operation of the input unit, and reading out the stored video signal data timed with the operation of the recorder, such that the same still image is superimposed on the picture recording medium by the operation of the recorder.

Apparatus for recording still image with random noise minimized

A method for automatically setting signal processing conditions for respective colors in an image input/output system where a color original is read for color separation by an image input device and input density signals from the input device are then inputted to a signal processing section to be processed in gradation for each color. Then, the process density signals are inputted to an image output device such that the conditions of the original in the form of optional parameters are selected from a set of options and characteristic point parameters which are selected by designating characteristic points on the original to be processed are selected as auxiliary input parameters. Prescanned data from the image input device is processed together with the auxiliary input parameters so as to thereby determine the processing conditions for respective color output density signals.

Method for automatically setting signal processing conditions in image

An apparatus for producing a hard copy of a picture picked up by a color image pickup device processes a video signal representing the picture according to data representing picture processing conditions entered by a data input unit. The data relates to the kind of a color separating filter associated with the image pickup device. A storage has groups of color conversion coefficients stored therein, each of which group specifies color conversion associated with the kind of a color separating filter, in accordance with the data relating to the kinds of color separating filters which are usable with image pickup devices. The picture represented by the processed video signal is recorded on a recording medium and displayed on a picture display. In response to the data received by the data input unit, a particular one of the groups of color conversion coefficients which is associated with the received data is read out of the storage, and the video signal is subjected to color correction according to the group of color conversion coefficients thus read out.

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Kaisei, Japan

Hitoshi Urabe