Agfa-Gevaert has patented a method to measure the point spread function (PSF) of a digital image detector system by analyzing quantum noise in image data. This allows for sharpness calculation without the need for image phantom recordings. GlobalData’s report on Agfa-Gevaert 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 Agfa-Gevaert, Document anti-counterfeiting was a key innovation area identified from patents. Agfa-Gevaert's grant share as of February 2024 was 85%. Grant share is based on the ratio of number of grants to total number of patents.
Method to calculate point spread function of digital image detector
A recently granted patent (Publication Number: US11915402B2) discloses a method for determining a point spread function (PSFxy) of a digital image detector system. The method involves acquiring a set of image pixel values with transfer function modulated quantum noise in a spatial sample area where no structural objects causing image signal variations are present. By calculating pixel deviations and autocorrelation peak values for local image pixels in the sample area, the PSFxy can be accurately determined.
The patent also covers variations of the method, including different shapes for the spatial sample area and the peripheral sensing kernel, as well as normalization and destriping of image pixel values after acquisition. Additionally, the patent includes claims for computer programs stored on non-transitory computer-readable media that execute the steps of the method. These claims encompass instructions for carrying out the method as described in the patent, providing a comprehensive approach to determining the point spread function of a digital image detector system.
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