Nikon. has filed a patent for a method of detecting clipping of retinal image content in an optical coherence tomography (OCT) image. The method involves detecting the boundary of the retinal image content, calculating the distance between the boundary and the edge of the OCT image, and determining if clipping has occurred by comparing the calculated distance with a clipping threshold distance. This method aims to improve the accuracy of OCT imaging for diagnosing retinal conditions. GlobalData’s report on Nikon gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Nikon, Welding robots was a key innovation area identified from patents. Nikon's grant share as of September 2023 was 28%. Grant share is based on the ratio of number of grants to total number of patents.
Method for detecting vertical clipping in retinal image data
A recently filed patent (Publication Number: US20230316508A1) describes a method for detecting vertical clipping of retinal image data in an optical coherence tomography (OCT) image of a patient's retina. The method involves detecting a boundary of the retinal image data that indicates the boundary of the patient's retina in the OCT image. It then calculates the distance between the boundary and an edge of the OCT image and determines if vertical clipping of the retinal image data has occurred by comparing the calculated distance with a clipping threshold distance. If the calculated distance is equal to or less than the clipping threshold distance, it is determined that clipping of the retinal image data has occurred.
The patent also describes additional features of the method. It includes detecting a second boundary of the retinal image data and calculating the distance between the second boundary and a second edge of the OCT image to determine if clipping has occurred. The method can output a clipping notification that indicates the level of clipping of the retinal image data in the OCT image. This can be done by overlaying a clipping region on an en-face image of the patient's retina, providing a visual indication to a clinician of the areas that have been vertically clipped.
The method can also determine whether vertical clipping has occurred outside a masked region surrounding a region of interest on the en-face image. If clipping has occurred outside the masked region, the clipping notification indicates that clipping of the region of interest has not occurred. The method can receive positional data of the patient's eye and adjust the detected boundary within the OCT image based on the received positional data.
The patent also includes a computer program comprising computer-readable instructions that perform the method and a system for detecting vertical clipping. The system includes an input for receiving the OCT image, a boundary detection module, a clipping detection module, and an output for providing the clipping notification.
Overall, this patent describes a method and system for detecting vertical clipping of retinal image data in OCT images, providing clinicians with valuable information about the quality and integrity of the captured images.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
