摘要:
In a sensitivity function measuring unit, a CMD for picking up a beam from a light source is arranged through a photographic lens and a liquid crystal lens. A preamplifier, an A/D converter, a subtractor, a sensitivity function memory, a compressor, and R, G, and B sensitivity function memories are sequentially connected to the CMD through a switching circuit. An image reproducing unit for reproducing an original image using a sensitivity function calculated by the sensitivity function measuring unit is connected to a calculator for calculating a reproduced image, a frame memory for storing an image signal picked up by the CMD, and calculators for calculating sensitivity functions stored in the sensitivity function memories. The image reproducing unit is also connected to a display unit.
摘要:
In a sensitivity function measuring unit, a CMD for picking up a beam from a light source is arranged through a photographic lens and a liquid crystal lens. A preamplifier, an A/D converter, a subtractor, a sensitivity function memory, a compressor, and R, G, and B sensitivity function memories are sequentially connected to the CMD through a switching circuit. An image reproducing unit for reproducing an original image using a sensitivity function calculated by the sensitivity function measuring unit is connected to a calculator for calculating a reproduced image, a frame memory for storing an image signal picked up by the CMD, and calculators for calculating sensitivity functions stored in the sensitivity function memories. The image reproducing unit is also connected to a display unit.
摘要:
An auto-focusing apparatus includes a CCD for imaging an optical image formed by a photographing optical system, a motor for changing the position of the CCD along the direction of the optical axis, a BPF for extracting a predetermined frequency component from an image signal read from the CCD, a detector for outputting a focus signal corresponding to a focusing degree by performing square detection of an output signal from the BPF, and a microprocessor for calculating an intermediate parameter dFZP on the basis of the frequency band of the BPF and the F-number of the photographing optical system, determining a sampling interval .DELTA.x on the basis of a characteristic value COPT of the detector and the intermediate parameter d.sub.FZP, controlling the motor and the CCD in accordance with the sampling interval, sampling a plurality of focus signals, and detecting an in-focus point by interpolating the focus signals.
摘要:
A correlation operational apparatus for multi-dimensional images includes: means for reducing at least two-dimensional components of the multi-dimensional images composed of at least two components by at least one component by projecting a vector representing the image onto a space perpendicular to a vector representing a large variance of distribution of the multi-dimensional image in a vector space whose orthogonal axes represent the individual dimensional component values of the multi-dimensional image; and means for performing a correlation operation for each component on the multi-dimensional images whose dimensional components have been reduced by at least one. In consequence, images having a relatively high number of high spatial frequency components and whose components have been reduced by at least one are extracted, and a correlation operation is performed thereon.
摘要:
An imaging device 11, in which photoelectric conversion is performed by an imaging element 16 for acquiring an image of a subject formed by the photographing lens 12, comprising a light source estimation unit 31 for generating estimated light source information for estimating a light source of the subject, on the basis of an image signal acquired by the imaging device 16; an light source sensor 18 for detecting a spectrum of the light source; a light source sensor information calculation unit 32 for generating a light source sensor information including the spectrum based on the spectrum; a color conversion parameter calculation unit 33 for calculating the color conversion parameters of the image signal based on the estimated light source information and the light source sensor information; and, a color conversion processing unit 34 for performing color conversion of the image signal by using the color conversion parameters. This allows the imaging device to realize precise color reproduction with an improved accuracy.
摘要:
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.
摘要:
A mixing ratio database stores information regarding a mixing ratio of plural materials for producing a color corresponding different color chart IDs. A plurality of pieces of color chart spectral information under determination illumination light are calculated using a plurality of pieces of spectral information of spectral reflection factors contained in a color chart and spectral information of the determination illumination light which is information of illumination light used for color chart determination. One of the calculated plural pieces of color chart spectral information which most closely matches spectral information of a subject is determined. A color chart ID which identifies the determined piece of color chart spectral information is output, and information of a mixing amount of each of the plurality of materials for the output color chart ID is also output based on the information stored in the mixing ratio database.
摘要:
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.
摘要:
The image processing system is applied to dentistry, for example, and 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. Therefore, a repair material compound ratio calculation database is searched and the compound data for a material that matches the hue of the patient's teeth are found, whereby a crown repair or denture or the like that very closely matches the color of the patient's teeth is produced.
摘要:
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.