Fujifilm Corporation

Ajinomoto Co., Ltd.

Masayuki Kuramoto

Makoto Sugizaki

Masahiro Kubo

Ryo Takahashi

Shuichi Ishii

Shun Kobayashi

Satoshi Ozawa

Makoto Kagaya

Masayuki Takahira

Tatsuya Hattori

Takeichi Tatsuta

Eiko Oshimura

Masahiro Ino

Nana Haraya

A light source unit emits excitation light, which causes a drug to be excited to emit chemical fluorescence, and reference light which has a wavelength range from a blue-light wavelength range to a red-light wavelength range. A color information acquisition section acquires a plurality of pieces of color information from fluorescence and reference image signals that are obtained from the image pickup of an object to be observed illuminated with the excitation light and the reference light. A color difference expansion section expands a color difference between a normal mucous membrane and a fluorescence region in a feature space formed by the plurality of pieces of color information.

Endoscope system for observing chemical fluorescence and method of operating the same

As saturation enhancement processing, first saturation enhancement processing or second saturation enhancement processing different from the first saturation enhancement processing is executed. A high saturation range Ry(rc)Ry(r) after the second saturation enhancement processing is greater than a high saturation range Rx(rc)Rx(r) after the first saturation enhancement processing. A value Ry(r) included in the high saturation range Ry(rc)Ry(r) after the second saturation enhancement processing is smaller than a value Rx(r) included in the high saturation range Rx(rc)Rx(r) after the first saturation enhancement processing.

Medical image processing device, endoscope system, and method of operating medical image processing device

A light source unit emits light in a plurality of wavelength ranges. The light source unit can change the light emission ratio of light in each wavelength range. In a case where the switching of first illumination light having a first light emission ratio and second illumination light having a second light emission ratio different from the first light emission ratio is performed, switching-period-illumination light having a switching-period-light-emission ratio different from the first light emission ratio and the second light emission ratio is emitted in a switching period of at least one or more frames.

Light source device, endoscope system, and method of operating light source device

A V-LED, B-LED, G-LED and R-LED for an endoscope are all driven to apply normal light to an object of interest in a body. An image sensor images the illuminated object and outputs an RGB image signal. A measurement sensor measures a light amount of red light from the R-LED. A light source controller acquires a current value for the R-LED according to a light amount signal from the measurement sensor and a target light amount signal for the R-LED. A normal color converter and the R-LED receive a current of the current value. Each LUT_Mij in the normal color converter is referred to for outputting a matrix coefficient according to the current value of the R-LED. The RGB image signal is converted into a processed image signal by matrix operation according to the matrix coefficient.

Endoscope system and operating method thereof

A light source device simultaneously produces violet narrowband light and green narrowband light. A complementary color type imaging device of a complementary color type endoscope outputs first to fourth mixed pixel signals. In a complementary color second processor, a matrix operation unit performs a matrix operation of the first to fourth mixed pixel signals, and produces first and second display signals Dand D. A mixed color corrector corrects the first and second display signals Dand Don the basis of relational expressions of 'D'=D&#x2212;K&#xd7;D' and 'D&#x2032;=D&#x2212;K&#xd7;D'. Krepresents the ratio of a signal value of the second display signal to a signal value of the first display signal under independent application of only the violet narrowband light. Krepresents the ratio of a signal value of the first display signal to a signal value of the second display signal under independent application of only the green narrowband light.

The present invention provides a cosmetic composition containing (A) a powder composed of one or more kinds of the N-medium-chain-acyl basic amino acid powder represented by the following formula (I), (B) an inorganic powder, and (C) an oil material: wherein R is a saturated or unsaturated straight hydrocarbon group having 5-9 carbon atoms, and m is an integer of 1-4.

Cosmetic composition

Disclosed is a medical image processing device for generating an image in which a difference in color between an abnormal part where a gastric mucosa is atrophied, and a normal part is enhanced. A B/G ratio is determined from B and G image signals, and a G/R ratio is determined from the G and R image signals. In a feature space formed from the B/G ratio and the G/R ratio, first processing is performed for moving the coordinates of a second range to a reference range including the origin in a state where the coordinates of first and third ranges are maintained. In order to make the first range and the third range distant from each other, second processing is performed for moving the first and third ranges. A first special image is generated based on the B/G ratio and the G/R ratio after the first and second processing.

Medical image processing device, operation method therefor, and endoscope system

A base image includes a B image signal in which ductal structure is brighter than mucous membrane and capillary vessels are darker than the mucous membrane. The B image signal is subjected to a frequency filtering process for extracting frequency components including the ductal structure and the capillary vessels. Thereby, a structure-extracted image signal, in which a pixel value of the ductal structure is a positive value and a pixel value of the capillary vessels is a negative value, is generated. Based on the structure-extracted image signal, a display controlling image to be used for enhancing display of the ductal structure and suppressing display of the capillary vessels is generated. The base image is combined with the display controlling image to obtain a display-controlled image in which the display of the ductal structure is enhanced and the display of the capillary vessels is suppressed.

Image processing device and method for operating endoscope system

A light source unit emits multi-colored light. The amount of light of each color is controlled so that the multi-colored light has a first light emission ratio. A color image sensor images an object and outputs a multi-colored image signal. Again coefficient calculator calculates provisional gain coefficients based on the multi-colored image signal. A noise evaluation value calculator calculates a noise evaluation value based on the provisional gain coefficients and set color correction coefficients. A judging section judges whether or not the noise evaluation value is an allowance or less. In a case where the noise evaluation value is judged to be the allowance or less, a coefficient determiner determines the provisional gain coefficients as set gain coefficients, and a light emission ratio determiner determines the first light emission ratio of the multi-colored light as a set light emission ratio.

First RGB image signals are subjected to an input process. First color information is obtained from the first RGB image signals. Second color information is obtained by a selective expansion processing in which color ranges except a first color range are moved in a feature space formed by the first color information, the first color information that represents each object in a body cavity being distributed in the each color range. The second color information is converted to second RGB signals. A red display signal, a green display signal and a blue display signal are obtained by applying a pseudo-color display process to the second RGB signals.

Image processing device, method for operating the same, and endoscope system

First RGB image signals are inputted. Color difference signals Cr and Cb are calculated from the first RGB image signals. In a feature space formed by the color difference signals Cr and Cb, a first process and a second process are performed. In the first process, coordinates which correspond to the first, second, and third observation areas are moved in a parallel manner such that the coordinates which correspond to the second observation area are moved to a reference area that contains the origin point. In the second process, the coordinates which correspond to the first observation area and the coordinates which correspond to the third observation area are moved away from each other.

Medical image processing device, method for operating the same, and endoscope system

First RGB image signals are inputted. A first B/G ratio and a first G/R ratio are calculated. The first B/G ratio and the first G/R ratio are converted into a second B/G ratio and a second G/R ratio, respectively, through a color information conversion process. Owing to the color information conversion process, a difference between first and second observation areas in a second signal ratio space formed by the second B/G ratio and the second G/R ratio is greater than a difference between the first and second observation areas in a first signal ratio space formed by the first B/G ratio and the first G/R ratio, and a difference between the first and third observation areas in the second signal ratio space is greater than a difference between the first and third observation areas in the first signal ratio space.

Violet narrowband light Vn and green narrowband light Gn produced by a light source device are supplied to a complementary color type endoscope, and simultaneously applied to an observation object. In a complementary color type imaging device, first mixed pixels and second mixed pixels, which sense both of the violet narrowband light Vn and the green narrowband light Gn, are read out. The light amount ratio Z of the violet narrowband light Vn to the green narrowband light Gn is set in such a range as to make the light amount of the violet narrowband light Vn larger than the light amount of the green narrowband light Gn, and make a signal value of the second mixed pixel higher than a signal value of the first mixed pixel.

Endoscope system and light source device

RGB image signals are inputted. A B/G ratio is calculated from the B and G image signals. A G/R ratio is calculated from the G and R image signals. First, second, and third areas are located in a feature space formed by the B/G and G/R ratios. An equal angular magnification process is performed on an angle in a region R1x including a first reference line passing through the second area. An angle expansion process or an angle compression process is performed on an angle in a region R1y located outside the region R1x. An equal radial-coordinate magnification process is performed on a radial coordinate in a region R2x, which includes a second reference line passing through the second area and intersecting the first reference line. A radial-coordinate expansion process or a radial-coordinate compression process is performed on a radial coordinate in a region R2y located outside the region R2x.

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Ashigarakami-gun, Japan

Masayuki Kuramoto