A method of irreversibly immobilizing an enzyme in a polyurethane and an enzyme-containing polyurethane having a degree of immobilization of the enzyme of approximately 100%. The synthesis of waterborne polyurethanes in the presence of enzyme has enabled the irreversible attachment of the enzyme to the polymeric matrix. The distribution of immobilized enzyme as well as activity retention are homogeneous within the polyurethane. Decreasing ECC hydrophobicity, via the use of a less hydrophobic polyisocyanate prepolymer during polymerization, significantly enhanced the intrinsic activity of the ECC.

Irreversible immobilization of enzymes into polyurethane coatings

An image processing apparatus executes a distortion correction on coordinates of a target pixel in a virtual viewpoint image based on distortion characteristics of a virtual camera and calculates coordinates in the virtual viewpoint image after the distortion correction. The image process apparatus calculates ideal coordinates in a captured image from the coordinates in the virtual viewpoint image after the distortion correction and calculates real coordinates in the captured image from the ideal coordinates in the captured image based on distortion characteristics of an imaging unit. The image process apparatus calculates a pixel value corresponding to the real coordinates from image data of the virtual viewpoint image and corrects the pixel value corresponding to the real coordinates based on ambient light amount decrease characteristics of the imaging unit and ambient light amount decrease characteristics of the virtual camera.

Image processing apparatus and method

PROBLEM TO BE SOLVED: To enable detection of an image forming position for a recording material, even if a floating part is generated in the recording material to be transferred. SOLUTION: An imaging section 60 is provided with a first spot light source 63 and a second spot light source 64 for forming optical spot images on a sheet of paper P, by having radiating the spot beam irradiated to the paper P that includes a formed test image which is being transferred in the sub-scanning direction; a CCD image sensor 67 to read by using an optical system reduced in size, locations in the main scanning directions of the test image and the optical spot image formed on the paper P transferred in the sub-scanning direction; and a control section for correcting the location in the main scanning direction of the test image, read by the CCD image sensor 67, using the location in the main scanning direction of the optical spot image read by the CCD image sensor 67. COPYRIGHT: (C)2009,JPO&INPIT

Image reading apparatus, and image forming apparatus

Methods and apparatuses for color correction of color device for various operating conditions In at least one embodiment of the present invention, operating under a current condition, a color correction operation that is derived from color correction operations defined for other conditions is performed on the color data In another embodiment, a device profile for managing colors for a color device operating under one condition is interpolated from the device profiles for the color device operating under other conditions (eg, based on the input received from a user interface according to the perception of the user or based on the measurement of a sensor) The interpolation can be based on the input received from a user interface according to the perception of the user or it can be based on the measurement of a sensor or a set of sensors Various operating conditions for a color device (eg, a scanner, a camera, a video camera, a printer, a display device such as a CRT monitor or an LCD display panel, a television set, or others) include chromaticity and illumination of ambient light, background color for a display device, characteristics of print media for a printer, humidity, temperature, pressure and ink level for an ink jet printer, the age of a light source for a scanner, and others

Method and apparatus for color correction of color devices for various operating conditions

The discriminating method utilizes first to third sensors respectively having spectral sensitivities corresponding to three primary colors and a fourth sensor having a spectral sensitivity that does not overlap the spectral sensitivities corresponding to the three primary colors as sensors constituting an image pickup system, and discriminates a light source type of a photographic light source by using information obtained by the first to fourth sensors. The image forming method corrects image data of an input image using the light source type discriminated by the above light source type discriminating method.

Light source type discriminating method, image forming method, method and apparatus for estimating light source energy distribution, and exposure amount determining method

A color correcting apparatus corrects color data according to second ambient light so that an output device outputting a color based on the color data calibrated in first specified ambient light can output almost the same color in the second light. The apparatus comprises a storing section used to store several main component data each representing a different component of light, which are combined to reproduce the second light, an input section used to input several weighing coefficients to assign weight to each of the several pieces of component data when they are combined and a correcting section used to correct color data based on correction parameters obtained using the several pieces of component data stored in the storing section and using the several weighing coefficients input through the input section.

Color correcting apparatus

PROBLEM TO BE SOLVED: To provide a color image conversion device, capable of converting high accuracy from a color image to an image under a prescribed light source. SOLUTION: In this conversion device, an initial light source color extractor 11 extracts a pixel having the highest possibility of being a light source color from the original image as an initial light source color. A calculator 12 of Lagrange undefined multiplier method deviates a conversion parameter for minimizing an evaluation factor, in the case of applying initial light source color and the light source color of a prescribed light source to a color adoption model of vision, an original image converter 13 converts from the original image to an image under the prescribed light source, based on the conversion parameter.

Color image conversion device

PROBLEM TO BE SOLVED: To automatically print a poster with a final print output size specified, by specifying a print medium size and a print output size. SOLUTION: An image input section 31 inputs an image for printout. A print medium size specification section 33 specifies the print output size. An image conversion section 37 converts the input image from the image input section 31 into the print output size. Based on the above print output size and the print medium size, a dividing processing calculation section 35 calculates division information of the plane of the print output size. Based on the converted image obtained by the image conversion section 37 and the calculation result by the division processing calculation section 35, a division print data generation section 39 generates a division print data of the above converted image. COPYRIGHT: (C)2008,JPO&INPIT

Print control unit

A light source presuming apparatus includes: a candidate light source color obtaining unit which obtains candidate light source colors; a guide light source color holding unit which holds guide light source colors for guiding obtainment of parameters of a color adaptation model showing color adaptation of the sight sense from the candidate light source colors to a reference light source color; a guide parameter obtaining unit which obtains such parameters so as to be guided to the guide light source colors; an error converging unit which obtains light source colors, as correction candidate light source colors, having the relation showing the color adaptation of the sight sense with the reference light source color by using the color adaptation model shown by guide parameters, substitutes the correction candidate light source colors for the candidate light source colors, and converges errors included in the candidate light source colors; and a light source color presuming unit which presumes the correction candidate light source color of the minimum errors as a light source color of the image data.

Light source presuming method and apparatus

PROBLEM TO BE SOLVED: To provide a similar image retrieving device capable of performing highly accurate similarity retrieval even when the illumination conditions of a key image and a search image are different. SOLUTION: The histograms of the key image and a search image 100 are inputted to a similarity calculating part 8. On the basis of limit conditions set by a limit condition setting part 9, an appearance parameter calculating part 10 calculates the model parameter of a color appearance model. On the basis of the parameter calculated by the appearance parameter calculating part 10, a normalizing part 8a of the similarity calculating part 8 normalizes the histogram of the search image. The similarity calculating part 8 calculates the similarity between the normalized histogram of the search image and the histogram of the key image. On the basis of the similarity calculated by the similarity calculating part 8, a searched result discriminating part 11 discriminates whether that search image is the candidate image of retrieval or not.

Noriharu Fujiwara

Papers

Color correcting apparatus

Color image conversion device

Print control unit

Light source presuming method and apparatus

Similar image retrieving device