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Title: Applying compressive sensing to TEM video: A substantial frame rate increase on any camera

One of the main limitations of imaging at high spatial and temporal resolution during in-situ transmission electron microscopy (TEM) experiments is the frame rate of the camera being used to image the dynamic process. While the recent development of direct detectors has provided the hardware to achieve frame rates approaching 0.1 ms, the cameras are expensive and must replace existing detectors. In this paper, we examine the use of coded aperture compressive sensing (CS) methods to increase the frame rate of any camera with simple, low-cost hardware modifications. The coded aperture approach allows multiple sub-frames to be coded and integrated into a single camera frame during the acquisition process, and then extracted upon readout using statistical CS inversion. Here we describe the background of CS and statistical methods in depth and simulate the frame rates and efficiencies for in-situ TEM experiments. Depending on the resolution and signal/noise of the image, it should be possible to increase the speed of any camera by more than an order of magnitude using this approach.
Authors:
 [1] ;  [2] ;  [2] ;  [3] ;  [3] ;  [2]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Duke Univ., Durham, NC (United States)
  2. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  3. Duke Univ., Durham, NC (United States)
Publication Date:
OSTI Identifier:
1214819
Grant/Contract Number:
AC05-76RL01830
Type:
Accepted Manuscript
Journal Name:
Advanced Structural and Chemical Imaging
Additional Journal Information:
Journal Volume: 1; Journal Issue: 1; Journal ID: ISSN 2198-0926
Publisher:
Springer
Research Org:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE compressive sensing; transmission electron microscopy; video; coded aperture; nanoparticles; chemical dynamics