Track topics on Twitter Track topics that are important to you
Compressive sensing technique allows capturing fast phenomena at much higher frame rate than the camera sensor, by recovering a frame sequence from their encoded combination. However, most conventional compressive video sensing methods limit the achieved frame rate improvement to tenfold and only support low resolution recovery. Making use of camera's redundant spatial resolution for further frame rate improve, here we report a novel compressive video acquisition technique termed Sinusoidal Sampling Enhanced Compressive Camera (S2EC2) to encode denser frames within a snapshot. Specifically, we decompose the dense frames into groups and apply combinational coding: random codes within each group for compressive acquisition; group specific sinusoidal codes to multiplex different groups onto the high resolution sensor. The sinusoidal codes designed for these groups would shift their frequency components by different offsets in the Fourier domain and staggered the dominant frequencies of the coded measurements of these groups. Correspondingly, the reconstruction successfully separate coded measurements of different groups and recovers frames within each group. Besides, we also solve the implementation problem of insufficient gray scale spatial light modulation speed, and build a prototype achieving 2000 fps reconstruction with a 15.6 fps camera (the actual compression ratio is 0.009). The extensive experiments validate the proposed approach.
This article was published in the following journal.
Name: IEEE transactions on pattern analysis and machine intelligence
The limited per-pixel bandwidth of most microscopy methods requires compromises between field of view, sampling density and imaging speed. This limitation constrains studies involving complex motion o...
3-D two-photon excitation (TPE) microscopy has been a critical tool for biological study since its introduction. Yet, the speed is largely limited by its point detector, e.g., photomultiplier tube (PM...
Efficient source coding is desired for any data storage and transmission. It could be enabled by adopting a transform inspired by natural phenomena. Based on the mechanical vibration models, a family ...
Low-energy X-ray imaging of the secondary electron bremsstrahlung X-ray emitted during carbon-ion irradiation is a promising method for range estimation. However, it remains unclear whether the method...
Multi-shot technique can effectively achieve high-resolution diffusion weighted images, but the acquisition time of multi-shot technique is prolonged, especially for multiple direction diffusion encod...
The new cadmium-zinc-telluride (CZT) technology is a powerful tool for cardiac nuclear medicine. The increased photon counting sensitivity of camera can be used to explore novel protocols ...
A feasibility trial to evaluate the usefulness of a high efficiency camera (D-SPECT) as an imaging modality for general nuclear medicine applications such as oncology.
To evaluate the feasibility, acceptability and safety of using a molecular breast imaging (MBI) Gamma Camera in women at high risk of developing breast cancer
The purpose of the study is to determine whether anticoagulant use (i.e. salicylates, clopidogrel, low-molecular weight heparin, or coumarin derivates) is able to prevent the development o...
The goal of this study is to assess the performance of parathyroid imaging on a cardiac-dedicated CZT camera, compared to planar pinhole imaging, in patients referred for primary hyperpara...
Dental methods involving the use of DENTAL HIGH-SPEED EQUIPMENT.
Liquid chromatographic techniques which feature high inlet pressures, high sensitivity, and high speed.
The use of molecularly targeted imaging probes to localize and/or monitor biochemical and cellular processes via various imaging modalities that include RADIONUCLIDE IMAGING; ULTRASONOGRAPHY; MAGNETIC RESONANCE IMAGING; fluorescence imaging; and MICROSCOPY.
Tools used in dentistry that operate at high rotation speeds.
A sampling methodology using small sample sizes when conducting surveys in small geographical or population-based areas or lots.
Mergers & Acquisitions
Commercial and market reports on mergers and acquisitions in the biotechnology, pharmaceutical, medical device and life-science industries. Mergers and acquisitions (abbreviated M&A;) is an aspect of corporate strategy, corporate finance and manageme...