Canon Kabushiki Kaisha

Koji Fuse

Takashi Ochiai

Hisashi Ishikawa

Tomokazu Yanai

Akitoshi Yamada

Minako Kato

Takafumi Niida

Disclosed is an image processing apparatus including: a sharpness recovery unit configured to recover sharpness of an input image; a correlation determination unit configured to determine a correlation between a target pixel and peripheral pixels of the input image; a noise removal unit configured to perform smoothing of the target pixel determined as having a correlation with the peripheral pixels in a recovered image output from the sharpness recovery unit; and a switching unit configured to switch between a mode in which the correlation determination unit uses the target pixel and the peripheral pixels of the pre-recovery input image in the correlation determination and a mode in which the correlation determination unit uses the target pixel and the peripheral pixels of the recovered input image in the correlation determination, depending on recovery characteristics used in the determination of the correlation determination unit.

Image processing apparatus, image processing method, and storage medium

An image that is to be a target for filtering processing is acquired, a plurality of filters having mutually different filter sizes and arrangement spacing for significant coefficients in the filters are applied to the image to perform filtering processing on the image.

Image processing apparatus, image processing method, and non-transitory computer-readable storage medium

An image processing apparatus divides an input image into a plurality of band area images, stores the respective band area images in a band memory, and performs image processing. The apparatus comprises: a storage unit configured to store filter coefficients having a two-dimensional reference area of M pixels in a first direction and N pixels in a second direction orthogonal to the first direction; and a spatial filter unit configured to apply, to the band area image stored in the band memory, a spatial filter using the filter coefficients. The filter coefficients are set as the filter coefficients so as to refer to pixels for every K pixels in the second direction, and the spatial filter unit sequentially applies the spatial filter to the band area image K times in the second direction.

Image processing apparatus and control method for applying spatial filters to images

An image processing apparatus includes an input unit that accepts input data, a detecting unit that detects line information from the input data, the line information indicating color information about a line included in the input data, color information about the background of the line, the width of the line, and a converting unit that converts the line information based on a contrast integrated value and the difference between the color information about the background and the color information about the line, the contrast integrated value being determined by the color information about the background, the color information about the line, and the width of the line.

An image processing apparatus configured to convert input image data into halftone image data by halftone-processing the input image data includes a prediction unit configured to predict a density of a pixel of interest, which is achieved when the halftone image data is printed, based on a group of halftone-processed pixels neighboring the pixel of interest according to a prediction method determined according to a halftone-processed pixel value of the pixel of interest, and a control unit configured to control the halftone processing according to the density predicted by the prediction unit.

Image processing apparatus and image processing method to generate halftone image data based on prediction of density corresponding to resolution of image to be printed

An image processing apparatus for performing screen processing on input image data via passes may include a screen processing unit, a detection unit, and a correction unit. The screen processing unit receives image data as received image data and performs screen processing on the received image data to produce screen-processed image data. The detection unit detects a difference of low frequency components between the received image data and the screen-processed image data. The correction unit corrects the screen-processed image data based on a difference detected by the detection unit. On subsequent passes, a process of at least one of the screen processing unit, the detection unit, and the correction unit is repeated to convert the input image data to screen-processed image.

Image processing apparatus and image processing method

An information processing apparatus is provided for a recording apparatus that records an image on a recording medium using a recording head. The recording head includes recording element arrays arranged in parallel, and in which recording elements that discharge recording material are aligned. The information processing apparatus includes an acquisition unit and a setting unit. The acquisition unit acquires displacement information of an impact position of the recording material recorded by at least one of the recording element arrays. The setting unit sets a distribution rate of the recording material for each recording element array according to the displacement information.

Information processing apparatus and information processing method

An image processing apparatus may include a first screen processing unit, a moir&#xe9; component calculation unit, a first correction unit, and a second screen processing unit. The first screen processing unit performs screen processing on image data to form screen processed image data. The moir&#xe9; component calculation unit calculates an original moir&#xe9; component that corresponds to a low-frequency component of the screen processed image data and a low-frequency component of the image data. The first correction unit corrects the image data based on a calculated moir&#xe9; component. The second screen processing unit performs the screen processing on the corrected image data.

An image recording apparatus acquires, from image data, gradation information in a region corresponding to a connected portion at which recording chips are overlapped with each other, sets, based on the acquired gradation information, control information for controlling recording rates of respective recording elements of a plurality of recording chips that are connected in an overlapped state, and according to the set control information, generates, from the image data, dot data for respective recording elements of the plurality of recording chips that are connected in the overlapped state.

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Tokyo, Japan

Koji Fuse