Canon Kabushiki Kaisha

Makoto Katsuma

Akira Hiramatsu

Hiroyasu Murakami

Hiroyuki Kimura

Masaharu Kawamura

Hiroshi Ohmura

Susumu Matsumura

Takeshi Kobayashi

Hiroyuki Miyake

Kazunobu Urushihara

Tokuichi Tsunekawa

Hiroshi Endo

Masayoshi Kiuchi

Atsushi Ito

Kiyoshi Alyfuku

Shigeki Yamada

Masayuki A Suzuki

Akira Akashi

Masanori Yamada

Syuichiro Saito

Shigeru Kamata

Yoshikazu Ishikawa

Hidefumi Notagashira

Akiyasu Sumi

Kenichi Shinbori

Kazuhiko Arakawa

Hiroyoshi Inaba

Junkichi Abe

Takeshi Ozasa

Takashi Watanabe

Hiroshi Yamamoto

Masanori Uchidoi

Naoya Kaneda

Kazuyoshi Takahashi

Tohru Kawai

Takashi Isobe

Toshiyuki Yanaka

Toshiaki Mabuchi

Hiroyuki Kataoka

Hideki Tanaka

Eiichi Takagi

Masayuki Iimura

Toyokazu Mizogui

Hisashi Matsumoto

Shunichi Tamai

Akio Iino

Yuzo Miura

Kazunori Urushihara

Toyoki Ishida

Hitoshi Mukoujima

Shizuko Inoue

A printing method which can complement an image defect caused by ejection failure and thus to obtain high definition image even when failure, such as faulty ejection or non-ejection failure, is caused in any of ejection mechanism as a plurality of printing elements of a printing head. The printing method includes step of detecting faulty nozzle of the printing head, step of performing printing excluding the faulty nozzle during primary scanning, step subsequently of providing a shift for the printing head in an auxiliary scanning direction at least a pitch between the nozzles, step of performing complemental printing with other normal nozzle for a printing region corresponding to the faulty nozzle which could not be printed in the printing step, and step of eliminating shift of the printing head in the auxiliary scanning direction.

Method and apparatus for printing

An image forming apparatus wherein an image for a predetermined region of a recording material is formed using images having a complementary relation by a plurality of scans of a recording head, the apparatus including allocating means for allocating a multi-level image data for the predetermined region for the scans; gradation reducing means for reducing gradation of the multi-level image data allocated by the allocating means, respectively; image forming means for forming an image having the complementary relation by driving the recording head in the scans on the basis of the image data having gradations reduced by the reducing means; wherein the complementary relation of the image by the forming means is reduced by at least one of the allocating means and the gradation reducing means.

Complementary recording system using multi-scan

An image processing apparatus includes an image forming part for forming images by discharging liquid ink from a plurality of recording elements, a processing unit for processing image data in accordance with processing conditions corresponding to the recording elements, and a preparing unit for inputting read data obtained by reading the images formed by the image forming part and preparing the processing conditions by comparing the read data with standard values preset depending on the kinds of recording agents. An image processing method including the steps of comparing standard values previously set depending on the kinds of recording agents with read data obtained by reading pattern images having a plurality of gradations recorded by an image recording part, and preparing a correction table for each of the recording elements. A recording medium on which a program is recorded so as to be read by a computer, in which standard values previously set depending on the kinds of recording agents are compared with read data obtained by reading pattern images having a plurality of gradations recorded by an image recording part with a plurality of recording elements and the program for preparing a correction table is recorded for each of the recording elements.

Image processing method and apparatus and recording medium

A method of processing an image comprises the steps of: supplying a photographing condition and/or a conversion process condition, e.g., at the time of photographing; using the supplied photographing condition and the supplied conversion process condition as parameters; and performing a processing, such as a conversion process, for an image signal of an image by using the parameters.

Method of processing an image such as a still image

An image processing system is constructed of an input device for inputting color image data which does not include color components corresponding to specific colors' a storing media for storing a table for making the color image data which does not include the color components corresponding to the specific colors correspond to output image data constructed of color components corresponding to the plurality of recording materials including the specific colors' and a developing unit for developing the input color image data into output image data constructed of the color components corresponding to the plurality of recording materials including the specific colors by using the table. The developing unit executes the developing process by using an interpolating process according to the kinds of color components corresponding to the recording materials. A precision of a color reproduction by a plurality of coloring materials including specific colors is raised by performing an interpolating process according to the color components.

Image processing system and method and recording media

The invention seeks to reduce amount of image data without detracting from picture quality, thereby lowering processing speed and holding down memory cost. While preserving the density of color image data, a computer compresses the color image data, which has been outputted by an image scanner, to a prescribed number of colors on the basis of the colors of inks. An image processor binarizes the results of compression, while preserving density, on the basis of ink colors. A main unit repeatedly prints a basic image, which is represented by the binarized image data, on cloth supplied from a supply unit.

Image processing apparatus and method, and method of manufacturing

An image processing method and apparatus are disclosed, wherein differences between maximum and minimum values for predetermined pixel data of a color image to be processed, for three dimensional pixel data, are calculated, a color correction masking coefficient is determined in accordance with the operation result. If necessary, the image is judged to determine if it requires color masking correction, and thereafter the color correction masking coefficient is determined.

Image processing method and apparatus capable of automatic color masking

The type of color image is identified on the basis of a distribution of color information for each color. A plurality of different types of data compression algorithms prepared beforehand are changed according to the results of the identification. Preferably, the difference between the maximum value and the minimum value of each picture element of respective color separation data of a color image is determined, and further, a histogram of frequency of color information obtained for each color is determined. On the basis of the histogram, the type of the color image is identified by the fact that whether or not the histogram contains a peak greater than a predetermined value or whether or not the deviation of the histogram is greater than a predetermined value.

Image processing device

A still image processing method which can execute the effective flowing process is provided. In this method, when the flowing process is executed by shifting some or all of the pixels constituting a still image of one image plane in a predetermined direction, if no image information to be shifted exists at the first image position, the image information from elsewhere in the image plane is shifted to the second image position. The image information at the second image position is obtained by shifting the image information in the image plane in the direction opposite to the principal shifting direction.

Still image processing method for blurring an image background and

There is a film image information reading apparatus called a film scanner. This apparatus comprises: a lighting optical system to illuminate a film document; a photoelectric conversion element, such as a CCD to convert the image information of the film document into the electric signal; and an adjusting circuit to adjust the output of the photoelectrical conversion element such that a predetermined density of the film document is output as an output of almost the saturation level of that element. The predetermined density is the color density of the base color of a negative film. The adjusting circuit may control the charge storage period, gain, or output level of the photoelectric conversion element. With this apparatus, the positive image can be easily derived by reversing the negative image without considering the base color of the negative film and the image signal of a high quality can be obtained.

Apparatus for reading a film image with a photoelectric converting

An image processing apparatus capable of extracting a particular image area from an image by designating a color hue of the desired particular image area. After indication on one or more points in an object region of interest, an initial range of hue or of brightness is designated, and a predetermined color is painted throughout a region adjacent to the indicated point(s) and having a hue or brightness, respectively, within the predetermined range. If that process results in the coloring of an area exceeding that which the operator desires to cover, the predetermined range of hue or brightness, as the case may be, is narrowed, and the process is repeated.

Image processing apparatus and method capable of extracting a particular

As image processing method suitable for creative image generation in which the image data of an original image are divided into plural areas each consisting of plural pixels, the shape of these areas is modified according to the image data of the original image, and the pixel data in each area are processed in accordance with a representative value of the image data.

Image mosaic-processing method and apparatus

An image data reading apparatus includes a photoelectric conversion device for converting image data on an original into electric signals, a light source for illuminating the original, a detector for detecting the shading correction values for the light source and the photoelectric conversion device, and an image processor for effecting shading correction on the video data output from the photoelectric conversion device with the shading correction value detected by the correction value detector.

Image data reading apparatus

There is an image processing apparatus to obtain a desired processed image by performing a predetermined image process to an input image. This apparatus comprises: an image input unit to input the image data; an image processor which can perform different image processes; a selector to select the kind of image process to be executed by the image processor; a memory to store different sample processed images which were subjected to the image processes; and a display to display both a sample image before execution of the image process and the sample processed image corresponding to the selected image process from the memory in accordance with selection by the selector. The image processor can perform the edge extracting process, mosaic process, and the like. With this apparatus, the operator can easily obtain various sample processed images and can extend the processed image of the original image by merely inputting a processing command.

Image processing apparatus which helps an operator to choose appropriate

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Kanagawa, Japan

Makoto Katsuma