Abstract: A multispectral image capturing apparatus has different spectral sensitivity characteristics of at least four bands. Three primary bands of the at least four bands have spectral sensitivity characteristics of standard RGB. At least one auxiliary band of the rest of the at least four bands excluding the three primary bands has a spectral sensitivity characteristic of a narrower bandwidth than bandwidths of the RGB.

Abstract: An image capturing apparatus includes a first image sensor unit, a second image sensor unit, and a spatial frequency reduction unit. The first image sensor unit is capable of subjecting an object image formed by an imaging lens to a photoelectric conversion to output a first image signal having a first resolution and constituted by a first number of colors. The second image sensor unit is capable of subjecting the object image formed by the imaging lens to a photoelectric conversion to output a second image signal having a second resolution that is lower than the first resolution and constituted by a second number of colors that is larger than the first number of colors. The spatial frequency reduction unit reduces a spatial frequency of the object image formed on a light receiving surface of the second image sensor unit by the imaging lens.

Abstract: A color conversion signal, which is determined on the basis of an image signal of the object, color reproduction characteristic information, which is information obtained at the time of image capture of the object, and a spectrum of the observation illumination light is converted into an image signal reflecting a luminance value of the object when observed under the observation illumination light on the basis of the luminance value of the observation illumination light, the luminance value of the imaging illumination light, and the information relating to the light reception condition.

Abstract: In a color reproduction system for displaying an image subjected to color conversion processing by a server side system on a monitor device of a user side system, the server side system comprises a first storage unit for storing a multi-spectrum image, a second storage unit for storing color reproduction characteristic information, which is information relating to a color reproduction characteristic when the image is displayed on the monitor device, a server side communication unit for receiving the color reproduction requirement information transmitted from the user side communication unit via the network, and a color conversion processing unit for obtaining, from the second storage unit, color reproduction characteristic information corresponding to the color reproduction requirement information, and performing color conversion processing on the multi-spectrum image on the basis of the obtained color reproduction characteristic information.

Abstract: A color conversion processing execution portion 114 implements color conversion processing on an input image signal, and outputs a color conversion-processed display image signal to an image display unit. Color conversion characteristic information required for the color conversion processing performed by the color conversion processing execution portion 114 is gathered by a characteristic information gathering portion 106. A color conversion processing method selection portion 112 selects an optimum color conversion processing method from among a plurality of candidate color conversion processing methods that can be executed by the color conversion processing execution portion 114 on the basis of the input image signal and the input color conversion characteristic information. A display image signal caused as a result of the color conversion processing is output to a monitor display device 140.

Abstract: An image processing system is used for dentistry. Upon creating a false tooth of a patient (59), a plurality of illuminating light of LEDs with different wavelengths emit light and a photographing apparatus (1A) photographs a tooth portion of the patient (59), thereby obtaining image data. The image data is sent to a dentistry filing system (2A) serving as a processing apparatus, and color reproducing data is obtained by calculation. The color reproducing data is sent to a dentistry factory (55) via a public line. Data is searched from a database (56) for calculating a ceramic compounding ratio, compound data of the ceramic false tooth is obtained, matching the color of the tooth portion of the patient (59), and the false tooth approximate to the tooth color of the patient (59) is created.

Abstract: A multi-spectral camera is provided which includes an image pickup optical system which forms an image of a subject. A wavelength selecting device receives light beams from the image pickup optical system and outputs a light beam having a selected wavelength. A wavelength switching device selectively switches the selected wavelength of the wavelength selecting device. An image pickup element receives the light beam output from the wavelength selecting device and outputs image data. A spectroscope receives the light beams from the image pickup optical system and outputs spectral data. And a subject characteristic calculating unit calculates a spectral data characteristic of the subject from the spectral data output from the spectroscope.

Abstract: An image display processing apparatus receives input illuminant information relating to input illuminant illuminating object when photographing, input device information specifying input characteristic of a photographing device, and image signal. Spectral reflectance image signal of the object is obtained from the image signal, the input illuminant information, and the input device information. Rendering light is applied to the spectral reflectance image signal, and output to a display device. A spectrum of light emitted from a variable characteristic illumination device for illuminating a display viewing environment can be varied. Spectrum of observing illuminant illuminating the display viewing environment is measured by a spectrometer unit. A spectrum of the rendering light is determined to substantially match with a spectrum of the input illuminant.

Abstract: An image processing system which performs photography of the teeth of a patient while causing a plurality of illumination light LEDs of different wavelengths to emit light by means of a photography device when producing a crown repair or denture of the patient, whereby image data are acquired. The image data are transmitted to a dental filing system constituting a processing device where color reproduction data are determined through computation. In addition, color reproduction data are transmitted to the dental technician's office via a public switched network. A repair material compound ratio calculation database is searched and compound data for a material that matches the hue of the patient's teeth is retrieved, so that a crown repair or denture or the like that very closely matches the color of the patient's teeth can be produced.

Abstract: An image processing system which performs photography of the teeth of a patient while causing a plurality of illumination light LEDs of different wavelengths to emit light by means of a photography device when producing a crown repair or denture of the patient, whereby image data are acquired. The image data are transmitted to a dental filing system constituting a processing device where color reproduction data are determined through computation. In addition, color reproduction data are transmitted to the dental technician's office via a public switched network. A repair material compound ratio calculation database is searched and compound data for a material that matches the hue of the patient's teeth is retrieved, so that a crown repair or denture or the like that very closely matches the color of the patient's teeth can be produced.

Abstract: A multi-spectral camera is provided which includes an image pickup optical system which forms an image of a subject. A wavelength selecting device receives light beams from the image pickup optical system and outputs a light beam having a selected wavelength. A wavelength switching device selectively switches the selected wavelength of the wavelength selecting device. An image pickup element receives the light beam output from the wavelength selecting device and outputs image data. A spectroscope receives the light beams from the image pickup optical system and outputs spectral data. And a subject characteristic calculating unit calculates a spectral data characteristic of the subject from the spectral data output from the spectroscope.

Abstract: An image processing system which performs photography of the teeth of a patient while causing a plurality of illumination light LEDs of different wavelengths to emit light by means of a photography device when producing a crown repair or denture of the patient, whereby image data are acquired. The image data are transmitted to a dental filing system constituting a processing device where color reproduction data are determined through computation. In addition, color reproduction data are transmitted to the dental technician's office via a public switched network. A repair material compound ratio calculation database is searched and compound data for a material that matches the hue of the patient's teeth is retrieved, so that a crown repair or denture or the like that very closely matches the color of the patient's teeth can be produced.

Abstract: A video signal processing device which processes a video signal input into a display monitor inputs illumination profile information relating to an illumination spectral characteristic of a light source and monitor profile information relating to a display profile of the display monitor. A video signal conversion unit performs color conversion processing on the input video signal on the basis of the illumination profile information and monitor profile information, and outputs a video display signal to the display monitor. As a result, color correction is performed on a video image displayed on the display monitor.

Abstract: An outline detection apparatus which detects an outline of a tooth in a dental image, including: a rectangular range specification device for estimating portions in the dental image as a tooth, gum, and background respectively, and specifying rectangular ranges with predetermined pixels in the positions estimated as the tooth, gum, and background; and a site estimation device for acquiring a characteristic quantity based on color information of the pixels in the rectangular ranges, finding a classification vector which maximizes the Fischer ratio based on the characteristic quantity, and estimating which of the tooth range, the gum range, and the background range, pixels other than the pixels in the rectangular ranges are positioned in according to comparison between a predetermined threshold value and an inner product between the classification vector and a pixel value vector based on color information on pixels other than the pixels in the rectangular ranges.

Abstract: A format storage unit stores a predetermined geometric property format. A chart data creating unit creates chart data based upon the geometric property format, and a printing unit creates a test chart by printing mark groups on a recording medium such as a paper sheet based upon the chart data. An image pickup unit outputs a chart image by scanning the test chart, and a mark center calculating unit calculates the center of each mark based upon the chart image. A fitting unit performs a fitting calculation comparing calculation results output from the mark center calculating unit and the chart based upon the geometric property format such that the squared difference therebetween becomes minimum for each mark position.

Abstract: An image display device which displays a multiband image acquired by a multiband camera capable of capturing two or more bands comprises a parameter input/output and image outputting screen configured to represent each band itself or an image of the band, a band-RGB conversion table configured to use for converting a band number into a color represented in the a parameter input/output and image outputting screen, and wavelength information converting unit configured to calculate the band itself or the color representing the image of the band from the band number by use of the band-RGB conversion table to output the band or the color to the a parameter input/output and image outputting screen.

Abstract: An image display apparatus which corrects images, which are projected from a plurality of image display sections onto different regions of a screen, by a correction data calculated from picked up image data, and joins the images so that they can be displayed as a continuous image on the screen.

Abstract: An image processing system is used for dentistry. Upon creating a false tooth of a patient (59), a plurality of illuminating light of LEDs with different wavelengths emit light and a photographing apparatus (1A) photographs a tooth portion of the patient (59), thereby obtaining image data. The image data is sent to a dentistry filing system (2A) serving as a processing apparatus, and color reproducing data is obtained by calculation. The color reproducing data is sent to a dentistry factory (55) via a public line. Data is searched from a database (56) for calculating a ceramic compounding ratio, compound data of the ceramic false tooth is obtained, matching the color of the tooth portion of the patient (59), and the false tooth approximate to the tooth color of the patient (59) is created.

Abstract: An image storage portion 31 stores image data that is input. An outline detecting portion 32 detects an outline of tooth that is the object of color measurement in the image based on the image data. A specular reflection region detecting portion 33 detects the position of a specular reflection region in the tooth that is the object of color measurement based on the data of each pixel that constitutes the image. A rectangular region setting portion 34 sets an analysis region to become the object of analysis processing in the image based on the position of the specular reflection region that is detected by the specular reflection region detecting portion 33. In accordance with the present invention, it is possible to avoid setting an analysis region in a specular reflection region when setting an analysis region, that is the object of analysis processing of an image, in the image.

Abstract: An object is to carry out color correction in a highly accurate manner on images acquired by various digital cameras and scanners.