Patent application number | Description | Published |
20090208087 | RADIOGRAPHIC IMAGE CORRECTION METHOD, APPARATUS AND RECORDING-MEDIUM STORED THEREIN PROGRAM - Unevenness in the density of a radiographic image of a subject that has been obtained by outputting radiation from a radiation output unit toward the subject and by detecting the radiation at a radiographic image detector is corrected. An area that has substantially the same density throughout the area when the radiation output by the radiation output unit is uniform with respect to the entire area of the radiographic image detector and that is present in a subject-image-present area is obtained from the radiographic image. Further, the pixel values of the radiographic image are corrected by using pixel values of the obtained area. | 08-20-2009 |
20090220174 | CHEST IMAGE ROTATION APPARATUS, METHOD AND RECORDING-MEDIUM STORED THEREIN PROGRAM - A chest image rotation apparatus includes a chest image input unit that is used to input a chest image, a vertebral-body region extraction unit that extracts a vertebral-body region from the input chest image, a vertebral-body direction calculation unit that calculates, based on the extracted vertebral-body region, the direction of vertebral bodies in the chest image, a chest image rotation unit that rotates the chest image so that the calculated direction of the vertebral bodies becomes perpendicular to the horizontal side of the chest image, and an output unit that outputs the rotated chest image. | 09-03-2009 |
20130113906 | ENDOSCOPE SYSTEM, PROCESSOR DEVICE THEREOF, AND METHOD FOR DISPLAYING OXYGEN SATURATION LEVEL - In a special mode, an internal body portion is imaged under a first white light beam to obtain a first frame composed of blue, green, and red signals. Sequentially, the body portion is imaged under a second white light beam to obtain a second frame composed of blue, green, and red signals. An oxygen saturation level is calculated from the signals. A special image is produced based on the oxygen saturation level. A displacement between the first and second frames is calculated from the signals. If the displacement is a first allowable value or more and less than a second allowable value, the special image is displayed with a lower chroma on a monitor, as compared with a case where the displacement is less than the first allowable value. If the displacement is the second allowable value or more, the special image is converted into a gray scale image. | 05-09-2013 |
20130211217 | ENDOSCOPE SYSTEM, PROCESSOR DEVICE THEREOF, AND IMAGE PRODUCING METHOD - First and second white light is generated by excitations of phosphors with first and second laser beams having center wavelengths of 473 nm and 445 nm, respectively. The first and second white light is applied, in respective frames, sequentially to a region of interest in a subject. A color image sensor images the region of interest in the each frame. Based on a shift amount, calculated from green signals of first and second frames, between images, an image of a blue signal of the first frame is moved to be aligned with an image of a green signal and an image of a red signal of the second frame. After the alignment, an oxygen saturation image representing an oxygen saturation level of hemoglobin in blood is produced from the blue signal of the first frame and green and red signals of the second frame, and displayed on a display. | 08-15-2013 |
20130235177 | ENDOSCOPE SYSTEM, PROCESSOR DEVICE THEREOF, AND METHOD FOR DISPLAYING ENDOSCOPIC VIDEO IMAGE - In a special mode, a first frame image including a blue signal B | 09-12-2013 |
20130245410 | ENDOSCOPE SYSTEM, PROCESSOR DEVICE THEREOF, AND EXPOSURE CONTROL METHOD - In a special observation mode, an oxygen saturation frame period, a normal frame period, and a vessel pattern frame period are repeatedly performed. A brightness detector detects the brightness of a latest frame image of an oxygen saturation video image, being a key video image. The intensity of light to be applied in the next oxygen saturation frame period is determined from the detected brightness. From the determined light intensity and a light intensity ratio among frames, the intensity of light to be applied in the next normal frame period and the next vessel pattern frame period is calculated. The exposure time of the next oxygen saturation frame period is determined from the detected brightness. From the determined exposure time and an exposure time ratio among frames, the exposure time of the next normal frame period and the next vessel pattern frame period is determined. | 09-19-2013 |
20130245411 | ENDOSCOPE SYSTEM, PROCESSOR DEVICE THEREOF, AND EXPOSURE CONTROL METHOD - When an endoscope system is put into a special mode, first and second frame periods for performing imaging under first and second measurement light to measure an oxygen saturation level, a third frame period for performing imaging under normal light, and a fourth frame period for performing imaging under vessel detection light to detect blood vessels in specific depth are repeated. An oxygen saturation image, a normal image, and a vessel pattern image are produced and displayed in a tiled manner on a monitor in the form of moving images. When a freeze button is pressed during display of the moving images, the light intensity and exposure time to be used in the first to fourth frame periods of a still image recording process are calculated using an image that is captured immediately before pressing the freeze button. Still images are obtained with the calculated light intensity and exposure time. | 09-19-2013 |
20140066733 | ENDOSCOPE SYSTEM, PROCESSOR DEVICE THEREOF, AND IMAGE PROCESSING METHOD - In imaging an oxygen saturation level of blood, measurement light having a wavelength of 450 to 500 nm, B light, G light, and an R light are sequentially taken out of broad band light BB emitted from a xenon lamp. An internal body portion is imaged under irradiation with the measurement, B, G, and R light to obtain image data B | 03-06-2014 |
20140100427 | ENDOSCOPE SYSTEM, PROCESSOR DEVICE THEREOF, AND IMAGE DISPLAY METHOD - First to fourth narrow band light N1 to N4 is sequentially applied to an observation object by rotating a rotary filter for special observation set in an optical path of a broad band light source. A blood vessel enhanced image in which a superficial blood vessel and a middle to deep-layer blood vessel are enhanced is produced based on reflection images of the first and fourth narrow band light N1 and N4. An oxygen saturation image, which images an oxygen saturation level of hemoglobin in blood, is produced based on reflection images of the second to fourth narrow band light N2 to N4. The produced blood vessel enhanced image and the oxygen saturation image are displayed side by side on a monitor. | 04-10-2014 |
20140152790 | ENDOSCOPE SYSTEM AND OPERATING METHOD THEREOF - An observation object is imaged under irradiation with oxygen saturation level measurement light to obtain a first image signal, and the observation object is imaged under irradiation with white light to obtain a second image signal. A normal light image is produced from the second image signal. An oxygen saturation level is calculated from the first and second image signals. The calculated oxygen saturation level is imaged in an oxygen saturation image. By superimposing the normal light image on the oxygen saturation image, an emphasized oxygen saturation image is produced. In the emphasized oxygen saturation image, an abnormal area in which a calculation result of the oxygen saturation level is likely to be abnormal is emphasized by its brightness. The produced emphasized oxygen saturation image is displayed on a display device. | 06-05-2014 |
20140155717 | ENDOSCOPE SYSTEM, PROCESSOR DEVICE, AND METHOD FOR OPERATING ENDOSCOPE SYSTEM - A color image sensor captures a reflected image of narrowband light having a wavelength range in which an extinction coefficient varies with a change in an oxygen saturation level of hemoglobin in blood. Thereby a first blue signal, a first green signal, and a first red signal are obtained. The color image sensor captures a reflected image of white light. Thereby a second blue signal, a second green signal, and a second red signal are obtained. Only an oxygen saturation level, out of two or more types of biological functional information including a blood volume and the oxygen saturation level, is obtained based on the first blue signal, the second green signal, and the second red signal. The oxygen saturation level is visualized to produce an oxygen saturation image. | 06-05-2014 |
20140187881 | ENDOSCOPE SYSTEM, PROCESSING APPARATUS FOR THE SAME, AND IMAGE GENERATING METHOD - An oxygen saturation level of hemoglobin in blood is correctly acquired without lowering a frame rate. A subject body illuminated with white light W is imaged by a color CCD to obtain signals Bs | 07-03-2014 |