Abstract:
In a case where a predetermined mono-light emission switching condition is satisfied and a mode is thus automatically switched to the mono-light emission mode from the multi-light emission mode, a mode is automatically switched to the multi-light emission mode from the mono-light emission mode in a case where a preset multi-light emission restart condition is satisfied.
Abstract:
A light source including LEDs for emitting violet, blue, green and red light is controlled, to change over a first emission mode for emitting light of all the four colors for broadband illumination, and a second emission mode for emitting green light for correction. A color image sensor having blue, green and red pixels is controlled, and outputs B1, G1 and R1 image signals by imaging in the first emission mode, and B2, G2 and R2 image signals by imaging in the second emission mode. The B2 image signal of the blue pixels in the second emission mode is subtracted from the B1 image signal of the blue pixels in the first emission mode. A high quality image is generated according to the B1 image signal after the subtraction. Thus, occurrence of poor quality of color rendering can be prevented.
Abstract:
Provided are a light source unit for an endoscope and an endoscopy system, which clarify the color difference between a first dye and a second dye in an observation image. The light source unit has a white LED light source and a band limiting section. The white LED light source has an excitation light source that emits blue excitation light and a phosphor layer that emits yellow fluorescence upon receipt of the excitation light. As a mixture of the fluorescence and part of the excitation light, the white LED light source outputs light having an intensity spectrum continuous across blue, green and red regions. The band limiting section reduces part of the output light in a wavelength band of not lower than a threshold. The threshold is not less than 650 nm. At the threshold, the first dye (pyoktanin) has an optical reflectance of not less than a constant value, whereas the second dye (indigocarmine) has an optical reflectance of substantially zero.
Abstract:
In an oxygen saturation level measurement mode, a color image sensor images an internal body portion alternately irradiated with measurement light and normal light. A normal image is produced from image data obtained under irradiation with the normal light. An oxygen saturation level is calculated from image data obtained under irradiation with the measurement light. Based on the oxygen saturation level, a hyperoxic region and a hypoxic region are determined in the normal image. A color balance process and a color enhancement process are applied to the hyperoxic region to improve visibility of depressions and projections of internal body tissue and a blood vessel pattern. A gain process is applied to the hypoxic region to make distinct color variations according to the degree of the oxygen saturation level.
Abstract:
An information processing apparatus includes a processor. The processor is configured to: acquire multiple first endoscopic examination images from storage archiving the multiple first endoscopic examination images, the multiple endoscopic examination images having been obtained by imaging multiple sites in a first endoscopic examination which is a previous or earlier endoscopic examination; and cause a display apparatus to display at least one first endoscopic examination image satisfying a specific condition from among the multiple first endoscopic examination images as a reference image in a period of carrying out a second endoscopic examination which is a current endoscopic examination.
Abstract:
A plurality of kinds of illumination light are emitted while being switched according to a specific light emission pattern. A plurality of observation images, which are obtained from image pickup of an object to be observed illuminated with each illumination light, are acquired. Control to display the plurality of observation images on a display unit while switching the plurality of observation images according to a specific display pattern is performed. The specific light emission pattern is fixed and the specific display pattern is changeable.
Abstract:
A light source unit is provided with a first light source, a second light source, and a third light source that emit red light, green light, and blue light, respectively, as illumination light. A light source controller controls emission timing of the illumination light to make emission start timing or emission end timing of the first, second, and third light the same and makes an emission period of the red light longer than an emission period of each of the green light and the blue light. An image sensor is capable of separately receiving light of each color reflected from an object of interest irradiated with the illumination light and capable of separately changing a light-receiving period of the light of each color. An imaging controller makes the light-receiving period of at least the red light coincide with the emission period of the red light.
Abstract:
A light source unit is provided with a first light source, a second light source, and a third light source that emit red light, green light, and blue light, respectively, as illumination light. A light source controller controls emission intensity and emission timing of the illumination light to make an emission period of the red light longer than an emission period of each of the green light and the blue light. An image sensor is capable of separately receiving the light of each color reflected from an object of interest irradiated with the illumination light and capable of separately changing a light-receiving period of the light of each color. An imaging controller makes the light-receiving period of at least the red light coincide with the emission period of the red light.
Abstract:
Light from each LED is applied to an integrating sphere (reference object), and a light amount calculator calculates light reflected from the integrating sphere. Calibration data, in which source control signals applied to the LEDs are associated with amounts of the light from the LEDs emitted in response to the source control signals, respectively, is generated. A maximum amount of the light from each LED is set in accordance with a predetermined light amount ratio. Based on the maximum light amount, an nth light amount which corresponds to a brightness step n is set. With reference to the calibration data, the source control signal which corresponds to the nth light amount is set as the source control signal for the brightness step n. A light control table is generated by associating the source control signal for the brightness step n with a brightness command signal for the brightness step n.
Abstract:
In a case where the detection target is detected, a landmark LM is detected to acquire position information of the landmark LM, and the position information of the landmark LM is associated with actual position information of the detection target. In a case where the detection target is not detected and the landmark LM is detected, a target non-detection display process of displaying a landmark position display circle on a display is performed.