Compressive sensing (CS) has been used in in-line digital holography (DH) to eliminate the noise, especially the interference caused by twin image. In this work, we combine the two-step iterative shrinkage-thresholding (TwIST) algorithm in CS and autofocusing methods to accomplish high-resolution imaging from a single-exposure hologram. We preprocess all the images within a reconstruction distance through TwIST algorithm, and then evaluate the focal plane of the images according to the focusing functions including the Laplace operator and the absolute gradient operator, etc. The proposed method can not only effectively eliminate twin image to improve the imaging quality, but also perform unique advantages to estimate the in-focus distance in DH.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.