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Multi-Snapshot Imaging for Chromatographic Peak Analysis.
IEEE Transactions on Bio-medical Engineering 2018 April 13
OBJECTIVE: Snapshot imaging has several advantages in automated gel electrophoresis compared with the finish-line method in capillary electrophoresis; this comes at the expense of resolution. A novel signal processing algorithm is proposed enabling a multi-snapshot imaging (MSI) modality whose objective is to substantially improve resolution. MSI takes multiple-captures in time as macromolecules are electrophoresed. Peaks from latter snapshots have high resolution but low signal-to-noise ratio (SNR), while earlier snapshots have low resolution but high SNR.
METHODS: Signals at different capture-times are related by a scale-in-separation, shift-in-separation, and amplitude gain. The proposed method realigns the multiple captures using least-squares and fuses them. The algorithm accounts for the partial waveforms observed as the chromatic peaks exit the sensor's field-of-view.
RESULTS: MSI improves resolution by approximately 10% on average per minute of additional electrophoresis.
CONCLUSIONS: Comprehensive analysis of the resolution are quantified on several datasets demonstrate the effectiveness of MSI.
SIGNIFICANCE: MSI can double the resolution compared with traditional snapshot imaging over a typical set of captures.
METHODS: Signals at different capture-times are related by a scale-in-separation, shift-in-separation, and amplitude gain. The proposed method realigns the multiple captures using least-squares and fuses them. The algorithm accounts for the partial waveforms observed as the chromatic peaks exit the sensor's field-of-view.
RESULTS: MSI improves resolution by approximately 10% on average per minute of additional electrophoresis.
CONCLUSIONS: Comprehensive analysis of the resolution are quantified on several datasets demonstrate the effectiveness of MSI.
SIGNIFICANCE: MSI can double the resolution compared with traditional snapshot imaging over a typical set of captures.
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