摘要:
A fundus oculi observation device 1 can form a near-infrared motion image and a color image (still image) of a fundus oculi Ef. The device 1 specifies an image region within the near-infrared motion image corresponding to a region of interest within the color image while the near-infrared motion image is being formed. The device 1 scans with a signal light LS based on the specified image region, thereby forming a tomographic image along the scanning line. According to the device 1, it is possible to determine a region of interest within a still image having a comparatively high image quality, specify the image region within the motion image corresponding to this region of interest, set a measurement site for the tomographic image.
摘要:
A fundus oculi observation device comprises: an image forming part configured to optically acquire data and form a tomographic image of a fundus oculi of an eye; a storage configured to store optical information representing a state of an ocular optical system of the eye; a calculator configured to calculate a magnification of the ocular optical system, based on the optical information; and an analyzer configured to analyze the tomographic image, based on the magnification.
摘要:
A fundus oculi observation device 1 has a function of forming a tomographic image of a fundus oculi Ef and a function of capturing a two-dimensional image of the surface of the fundus oculi Ef (a fundus oculi image Ef′). An arithmetic and control unit 200: specifies a vascular region in the tomographic image and a vascular region in the fundus oculi image Ef′; obtains a common region of the vascular region in the tomographic image and the vascular region in the fundus oculi image Ef′ and specifies the common region in the tomographic image; erases an image of the common region from the tomographic image and estimates a layer position within the common region to add an image representing this layer position to the common region; and obtains the layer thickness of the fundus oculi Ef in the common region based on the image representing this layer position.
摘要:
An optical image measurement device is configured to form a tomographic image at each of a plurality of cross sections of a measurement object, and the optical image measurement device comprises: an image processor configured to execute an arithmetic operation based on a tomographic image at one cross section of the plurality of cross sections and another tomographic image at each of one or more cross sections other than the one cross section, thereby forming a new tomographic image at the one cross section.
摘要:
First image forming part forms a two-dimensional surface image of a fundus oculi of an eye based on optically obtained data. Second image forming part forms tomographic images of fundus oculi based on data obtained by optically scanning a region of the surface of fundus oculi corresponding to at least part of two-dimensional image. Accumulated image generating part generates an accumulated image by accumulating the formed tomographic images in a depth-wise direction. Extracting part extracts first vascular territory corresponding to a fundus oculi vessel from two-dimensional image formed by first image forming part, and also extracts second vascular territory corresponding to a fundus oculi vessel from accumulated image generated by accumulated image generating part. Specification part specifies a position of a vascular cross sectional region corresponding to a cross section of a fundus oculi vessel in the tomographic image based on extracted first vascular territory and extracted second vascular territory.
摘要:
An optical image measuring device which can form a highly reliable image even if an object moves during scanning of a signal light is provided. An optical image forming device 1 comprises: an interferometer that splits a low coherence light L0 into a signal light LS and a reference light LR and generates an interference light LC by overlaying the signal light LS reflected by a fundus oculi with the reference light LR reflected by a reference mirror 14; a CCD 34 which receives the interference light LC and outputs a detection signal; Galvanometer mirrors 22 and 23 to scan the signal light LS in a main scanning direction and a sub-scanning direction; and a computer 40 forming tomographic images G1 to Gm along the main scanning direction at different positions of the sub-scanning direction. The Galvanometer mirrors 22 and 23 scan the signal light LS in a given direction crossing the main scanning direction, and the computer 40 forms a tomographic image for correction GR along the given direction to correct displacement of each topographic image Gi based on the tomographic image for correction GR.
摘要:
Image forming part 220 forms a 2-dimensional image of the surface of the fundus oculi Ef (fundus oculi image) and a tomographic image of the fundus oculi Ef. The fundus oculi image 212a and the tomographic image Ga captured at the first examination time and the fundus oculi image 212b and the tomographic image Gb captured at the second examination time are stored in an image storage part 212. Position information generating part 214 generates the position information 213a indicating the position of the tomographic image Ga in the fundus oculi image 212a and the position information 213b indicating the position of the tomographic image Gb in the fundus oculi image 212b. The generated position information 213a and 213b are stored in information storage part 213. Image processing part 230 adjusts the position between the tomographic images Ga and Gb based on such position information 213a and 213b.
摘要:
A fundus oculi observation device capable of defining which part in the result of analysis of the layer thickness of a fundus oculi is a part obtained by analyzing a vascular region is provided. A fundus oculi observation device 1 forms a plurality of tomographic images G1-Gm of a fundus oculi Ef. A layer thickness distribution calculator 231 calculates layer thickness distribution of the fundus oculi Ef in a cross section of a tomographic image G based on the tomographic images G1-Gm. A vascular region specifying part 234 specifies a vascular region in the tomographic image G. A controller 210 controls a display 240A to display layer thickness distribution information representing the layer thickness distribution and to also display vascular position information representing the position of the vascular region on the layer thickness distribution information.
摘要:
Image forming part 220 forms a 2-dimensional image of the surface of the fundus oculi Ef (fundus oculi image) and a tomographic image of the fundus oculi Ef. The fundus oculi image 212a and the tomographic image Ga captured at the first examination time and the fundus oculi image 212b and the tomographic image Gb captured at the second examination time are stored in an image storage part 212. Position information generating part 214 generates the position information 213a indicating the position of the tomographic image Ga in the fundus oculi image 212a and the position information 213b indicating the position of the tomographic image Gb in the fundus oculi image 212b. The generated position information 213a and 213b are stored in information storage part 213. Image processing part 230 adjusts the position between the tomographic images Ga and Gb based on such position information 213a and 213b.
摘要:
First image forming part forms a two-dimensional surface image of a fundus oculi of an eye based on optically obtained data. Second image forming part forms tomographic images of fundus oculi based on data obtained by optically scanning a region of the surface of fundus oculi corresponding to at least part of two-dimensional image. Accumulated image generating part generates an accumulated image by accumulating the formed tomographic images in a depth-wise direction. Extracting part extracts first vascular territory corresponding to a fundus oculi vessel from two-dimensional image formed by first image forming part, and also extracts second vascular territory corresponding to a fundus oculi vessel from accumulated image generated by accumulated image generating part. Specification part specifies a position of a vascular cross sectional region corresponding to a cross section of a fundus oculi vessel in the tomographic image based on extracted first vascular territory and extracted second vascular territory.