Multi-Resolution Data Fusion for Super-Resolution Electron Microscopy
2017 IEEE Conference on Computer Vision and Pattern Recognition Workshops (CVPRW)
Figure 1 : An illustration of the proposed multi-resolution data fusion (MDF) system in which a transmission electron microscope is specially configured to collect both low resolution data over a large field-of-view (FoV) together with a small set of high resolution patches from the same sample. The MDF algorithm uses the high-resolution patches as an image model within the "plug-and-play" framework to synthesize the 8x interpolated super-resolution output image over the full FoV. We
... the MDF system using an aberration-corrected FEI Titan transmission electron microscope and show that it can dramatically speed up image acquisition and reduce dosage as compared to conventional homogeneous raster-scanning microscopy. Abstract Perhaps surprisingly, all electron microscopy (EM) data collected to date is less than a cubic millimeter -presenting a huge demand in the materials and biological sciences to image at greater speed and lower dosage, while maintaining resolution. Traditional EM imaging based on homogeneous raster scanning severely limits the volume of high-resolution data that can be collected, and presents a fundamental limitation to understanding physical processes such as material deformation and crack propagation. We introduce a multi-resolution data fusion (MDF) method for super-resolution computational EM. Our method combines innovative data acquisition with novel algorithmic techniques to dramatically improve the resolution/volume/speed trade-off. The key to our approach is to collect the entire sample at low resolution, while simultaneously collecting a small fraction of data at high resolution. The high-resolution measurements are then used to create a material-specific model that is used within the "plug-andplay" framework to dramatically improve resolution of the low-resolution data. We present results using FEI electron microscope data that demonstrate super-resolution factors of 4x-16x, while substantially maintaining high image quality and reducing dosage.