摘要:
A multispectral image processing device of the present invention comprising: a base image conversion unit 6, which expands an input multiband image of a subject based on a base vector to convert it into a base image; a base vector calculation unit 2, which calculates the base vector; and an output unit 7, which outputs a multispectral image based on the base image converted in the base image conversion unit 6 is characterized in that the base vector calculation unit 2 calculates a base vector for 3 primary colors obtained by the product of a predetermined rendering illumination spectrum and a color matching function, and an orthogonal base vector, which is orthogonal to the base vector for 3 primary colors and based on statistical information on the spectral reflectance of the subject as the base vectors. Thereby, a multispectral image is converted into image data highly compatible with an existing 3-band system.
摘要:
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.
摘要:
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.
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 chart processing apparatus includes a spectrum calculating unit for receiving information regarding a spectral reflection factor of each color contained in a predetermined color chart and information regarding determination illumination light, and determining a spectrum of the color contained in the predetermined color chart under the determination illumination light by calculating the received information, and a determination information output unit for receiving a color signal of a subject, determining which color of the predetermined color chart closest matches the color signal of the subject by comparing the spectrum of each color determined by the spectrum calculating unit with the color signal of the subject, and outputting information identifying the resulting determination color.
摘要:
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.
摘要:
A multiband camera control apparatus comprises a multiband camera section configured to be capable of capturing a plurality of color bands, a computer configured to control the multiband camera section, a user interface configured to transmit instruction information for the control from the user to the computer, and parameters configured to control the corresponding band in each of the plurality of bands. The user interface includes a switching instruction section configured to switch between the plurality of bands. The computer is configured to control the multiband camera section by using the parameter corresponding to the band selected according to the instruction to switch between the plurality of bands from the switching instruction section.
摘要:
When an image of a certain band in a multiband image obtained by a multiband camera capable of capturing at least two bands is displayed with a computer and at least one pixel is specified on the image, a spectrum computing section estimates a spectrum from the signal value of at least one pixel specified in the multiband image and displays the spectrum on a spectrum output screen.
摘要:
An image display apparatus is provided which includes a screen and a plurality of projectors which respectively project images relating to a same object so that the images are superimposed on each other on the screen. One of the plurality of projectors is arranged spatially in substantially a plane symmetric relationship with another of the plurality of projectors so that the images are projected at projectors angles onto the screen to be substantially in alignment on the screen.
摘要:
An image processing system includes a photographing apparatus (1) and a processing apparatus (2). The photographing apparatus (1) includes six LEDs (6a to 6f) for emitting light with characteristics of spectroscopic distributions varied in a visible light area, a monochrome-type CCD (8) which picks-up a subject image that is illuminated by the LEDs (6a to 6f) and is formed by an image pick-up optical system (7) and which outputs an image signal, and a CPU (18) which sequentially lights-on the LEDs (6a to 6f) upon an instruction for photographing a subject spectroscopic image being input from an operating switch (14), picks-up the image by the CCD (8), and thus controls the operation for capturing 6-primary-color subject spectroscopic images. The processing apparatus (2) includes a calculating device (21) which captures the 6-primary-color subject spectroscopic images photographed by the photographing apparatus (1) to create a display signal for color reproduction at the high fidelity level, and a display (22) which displays the display signal created by the calculating device (21).