Browsing by Author "Cossairt, Oliver Strider"
Now showing 1 - 1 of 1
Results Per Page
Sort Options
Item Synthetic apertures for long-range, sub-diffraction limited visible imaging using fourier ptychography(2020-06-23) Cossairt, Oliver Strider; Holloway, Jason; Veeraraghavan, Ashok; Sharma, Manoj Kumar; Wu, Yicheng; Rice University; Northwestern University; United States Patent and Trademark OfficeA method for imaging objects includes illuminating an object with a light source of an imaging device, and receiving an illumination field reflected by the object. An aperture field that intercepts a pupil of the imaging device is an optical propagation of the illumination field at an aperture plane. The method includes receiving a portion of the aperture field onto a camera sensor, and receiving a sensor field of optical intensity. The method also includes iteratively centering the camera focus along the Fourier plane at different locations to produce a series of sensor fields and stitching together the sensor fields in the Fourier domain to generate an image. The method also includes determining a plurality of phase information for each sensor field in the series of sensor fields, applying the plurality of phase information to the image, receiving a plurality of illumination fields reflected by the object, and denoising the intensity of plurality of illumination fields using Fourier ptychography.