摘要:
Apparatus, method, and non-transitory medium for optical stabilization and digital image registration in scanning light ophthalmoscopy. Scanning an object with measurement light. Acquire an image of the object to be examined based on return light from the object. Acquire information which indicates movement of the object to be examined based on a plurality of acquired images. Control the scanning based on the information which indicates the movement of the object to be examined. Performing registration of the plurality of images.
摘要:
A method, controller, and non-transitory medium for obtaining images of a moving subject. Estimating changes in position of the subject based on the images. Calculating a quality metric of the estimation of the change. Comparing the quality metric to a threshold. In a first case in which the quality metric is less than the threshold, adjusting position of the scanning area based on the estimated change in position. In a second case in which the quality metric is not less than the threshold, obtaining a new second image.
摘要:
A method, controller, and non-transitory medium for obtaining images of a moving subject. Estimating changes in position of the subject based on the images. Calculating a quality metric of the estimation of the change. Comparing the quality metric to a threshold. In a first case in which the quality metric is less than the threshold, adjusting position of the scanning area based on the estimated change in position. In a second case in which the quality metric is not less than the threshold, obtaining a new second image.
摘要:
A system, apparatus, and method of obtaining an image of a fundus. Acquiring a reference image of the fundus at a first point in time. Acquiring a target image of the fundus at a second point in time. The target imaging area may overlap with the reference imaging area. An area of the target imaging area may be less than an area of the reference imaging area. Estimating movement of the fundus may be based upon at least the target image and the reference image. Acquiring a narrow field image of the fundus. An area of the narrow field imaging area may be less than the area of the target imaging area. A position of the narrow imaging area on the fundus may be adjusted based on the estimated movement of the fundus.
摘要:
System, method, and non-transitory computer readable medium encoded with instructions for imaging an object. Dividing raw data into forward scan data and backward scan data. Reversing the order of the backward scan data to produce inverted backward scan data. Determining an offset value that is associated with a maximum value of a first function based on the forward scan data and the inverted backward scan data. The forward scan data is shifted by the offset value relative to the inverted backward scan data. Producing a first image of the object that comprises the forward scan data interlaced with the inverted backward scan data. The forward scan data is shifted by the offset value relative to the inverted backward scan data.
摘要:
Systems, method, and non-transitory computer readable medium for imaging an object. The system includes a scanner. The scanner positions a spot of light from a light source on the object along a scanning path. The scanning path includes a plurality of scan lines. The spot moves along the scanning path at a scanning velocity. The scanning velocity is not constant. The intensity of the spot of light is modulated as a function of the scanning velocity. The system includes a detector that is arranged to output data associated with positions along the scanning path. The system includes one or more processors that perform calculations. Pixels are calculated based on the output data. The image is constructed of the object based on the pixels.
摘要:
Apparatus, method, and non-transitory medium for optical stabilization and digital image registration in scanning light ophthalmoscopy. Scanning an object with measurement light. Acquire an image of the object to be examined based on return light from the object. Acquire information which indicates movement of the object to be examined based on a plurality of acquired images. Control the scanning based on the information which indicates the movement of the object to be examined. Performing registration of the plurality of images.
摘要:
Systems and methods of real-time laser control and modulation for ophthalmic devices are described. The systems and methods can be used for precise laser delivery at sub-micron resolution in both laser treatment and scan imaging processes. In various embodiments, the systems can include a laser delivery device useful for surgical eye treatment, a laser delivery device useful for an ophthalmic scan imaging device, or both. In one embodiment, the system includes a laser surgery device integrated with a scan-based ophthalmic imaging apparatus. In such an embodiment, an eye motion signal obtained from the imaging apparatus can be used to provide fine-tuned control of the operation of the surgical laser beam in the laser surgery device.
摘要:
A microscopy imaging system comprises a fluorescence lifetime imaging microscopy (FLIM) system comprising a pulsed light source configured to direct a plurality of excitation light pulses onto a sample, a photo detector configured to detect emitted fluorescent photons created by the plurality of excitation pulses interacting with the sample, and a FLIM data acquisition system configured to measure the time interval between the excitation light pulses and the detected emitted fluorescent photons, a scanning light microscopy (SLM) system comprising a SLM data acquisition system, a fast scanning mirror and a slow scanning mirror, wherein the mirrors are configured to scan the light pulses across the sample; and a data processing system communicatively connected to the FLIM and SLM systems. Microscopy imaging methods are also disclosed.
摘要:
Systems and methods for real-time eye tracking using a SLO or other imaging device are described. The systems and methods provide robust and accurate image-based eye tracking for both small and large field SLO, with or without adaptive optics. Methods for rapidly re-locking the tracking of a subject's eye position after a microsaccade, a blink, or some other type of interference with image tracking are also described.