Canon Kabushiki Kaisha

Hirochika Matsuoka

Suzuko Fukao

Kimitaka Arai

Kazuhiro Saito

Mitsuru Maeda

Yuji Akiyama

Osamu Yamada

Makoto Torigoe

Takuya Shimada

Takeshi Makita

Takahisa Akaishi

Provided are an apparatus and method that obtain a numerical value for an evaluation value of an appearance of noise in a plurality of videos and that coordinate the appearance of noise based on the evaluation value. In an image processing apparatus that coordinates an appearance of noise among a plurality of videos, noise properties are obtained from the videos, and a noise evaluation value is calculated based on the noise properties. Based on the calculated noise evaluation value, noise to be added to the videos is calculated, and the added noise is then added to the videos.

Image processing apparatus and processing method thereof

In order to perform pseudo-three-dimensional display for analyzing color distribution, there are provided a color-distribution-information input step of inputting color-distribution information indicating color coordinate values that sample points in a first color system can have in a second color system, a user's-instruction input step of inputting an instruction of a user relating to an operation of generating object-surface information, and a generation step of generating three-dimensional-object-surface information in accordance with the instruction of the user, based on the color-distribution information.

Color-information processing method, and program

Appearance parameters for each object are set by pressing an appearance parameter setting button () for each object ID selected by a body object selection button (). Upon generation of a two-dimensional image for pseudo three-dimensional presentation, the color values of each object are determined based on the appearance parameters set for that object. A satisfactory three-dimensional presentation image can be generated according to the adaptation state of a human visual perception.

Information processing apparatus and information processing method

When generating a color conversion table for converting a device independent color into a device color, a conversion target color of the device independent color corresponding to a lattice point of the color conversion table is set based on color reproduction information indicating the relationship between the device color and device independent color. The conversion target color is changed to generate a plurality of neighbor colors of the conversion target color. The conversion target color and the plurality of neighbor colors are converted into device colors based on the color reproduction information, and the device color corresponding to the conversion target color is calculated from the conversion results.

Color processing method and apparatus

When an output image is observed, an image processing apparatus by which image observation can be performed always in a satisfactory state irrespective of its observation environment and a change of a human's visual characteristic is provided. In this image processing apparatus, a first output unit outputs the target image in a first gradation reproduction range, and a second output unit outputs the target image output by the first output unit in a second gradation reproduction range. At this time, a correction unit performs a correction process, i.e., gradation conversion process, to the target image output by the second output unit, on the basis of information concerning the environment for observing the output result of the target image by the second output unit.

Image processing apparatus, image processing method, storage medium, and program

The analysis and evaluation techniques of a gamut mapping technique, which can reflect the determination result of the quality of gamut mapping in the gamut mapping technique, are demanded. Hence, a color distribution information file and image file are loaded, initial 3D object data is generated based on color distribution data, and initial image object data is generated based on image data. The image object data and 3D object data are displayed on a monitor. When the user inputs a message, a process corresponding to the input message is executed, and the updated image object data and 3D object data are displayed on the monitor.

Color information processing apparatus and method

Mapping conversion to absorb differences of shapes of color reproduction gamuts and also preserve gradation is provided. In this image processing method, a color signal located within a first color reproduction gamut represented by a first color system is subjected to mapping conversion into a color signal located within a second color reproduction gamut represented by the first color system, where a locus of a change of color in the first color reproduction gamut is represented by a curve, mapping is performed to the curve, and the mapping conversion is performed on the basis of relation of the curves before and after the mapping.

Image processing method, image processing apparatus, and storage medium

When tetrahedral interpolation is used in correction of color reproduction upon color adjustment, image disturbances such as pseudo edges and the like may occur since the surfaces of each tetrahedron satisfy the boundary condition. Hence, a pixel position of digital image data is calculated, RGB values at that pixel position are acquired, and the acquired RGB values are displayed on RGB value display area. L*a*b* values are calculated based on basis functions and coefficient values of a color calculation B-spline solid, and the calculated L*a*b* values are displayed on an L*a*b* value display area.

Color processing apparatus and method

A color gamut that has been mapped from a monitor gamut into a printer gamut by gamut mapping is narrower than the printer gamut. Hence, an image to be output, which is corrected by gamut mapping, has low contrast and poor vividness. Hence, a gamut enlargement correction unit () maps an intermediate mapped gamut into the printer gamut with reference to the intermediate mapped gamut obtained by mapping the monitor gamut, and the printer gamut, thus obtaining a mapped gamut for gamut mapping.

Signal processing apparatus image processing apparatus and their methods

The invention is to relax the influence of noise with patch images of a number as small as possible, in consideration of the correlation of noise. For attaining this objective, in the preparation of a patch image to be used for generating image processing data, the patch image is made to include plural patches of a same color and such plural patches of the same color are so arranged as to reduce the mutual influence of the noise color signals by the self correlation of the noise color signal in the plural patches of the same color.

Patch image preparation method and recording medium therefor

An image processing apparatus comprises a color matching processing unit for performing color matching processing according to color reproduction characteristics of input and output devices, a color separation unit for separating image data subjected to the color matching processing, into color components corresponding to recording agents used by the output device, and a control means for controlling a method of the color matching processing and a method of the image data separation, according to a kind of input image. Thus, it is possible to perform the color matching processing and the color component separation according to the kind of input image, thereby realizing the color matching in consideration of how to use the recording agents and the satisfactory color matching according to a human's sight characteristic.

Image processing apparatus, image processing method, and storage medium for color matching

A process that prepares inverse conversion data in advance, and inversely converts a signal in a given color space into that in an original color space suffers conversion accuracy variations depending on the spatial intervals of color signals upon preparing the inverse conversion data, requires high cost for inverse conversion in terms of time, resulting in poor efficiency. When an input signal in the Lab color space is converted into an output signal in the RGB color space, a color signal converter ( ) converts an input signal in the RGB color space into a signal in the Lab color space. A potential calculator ( ) extracts the difference between the input signal and the color signal output from the color signal converter ( ). A minimal potential search unit searches for a signal to be supplied to the color signal converter ( ), which makes the extracted difference minimal, and outputs the search result as a color signal in the RGB color space, i.e., the conversion result.

Image processing apparatus and method

A first feature is extracted from first encoded data of a first image. A second feature is extracted from second encoded data of a second image. A first reconstructed image is obtained by decoding the first encoded data. A second reconstructed image is obtained by decoding the second encoded data. The first or second reconstructed image is corrected based on the first and second features. The first and second reconstructed images are synthesized.

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Chiba, Japan

Hirochika Matsuoka