Apparatus and method for compressive imaging and sensing through multiplexed modulation via spinning disks
AssigneeWilliam Marsh Rice University
InventorsKevin F Kelly, Richard G Baraniuk, Gary Woods, Ting Sun, Matthew Turner
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Abstract
Compressive imaging apparatus employing multiple modulators in various optical schemes to generate the modulation patterns before the signal is recorded at a detector. The compressive imaging apparatus is equally valid when applying compressive imaging to structured light embodiments where the placement is shifted from the acquisition path between the subject and the detector into the illumination path between the source and the subject to be imaged.
Claims20
An imaging system comprising:
- a multilayered modulator for modulating an incident light field by a series of patterns, wherein said multilayered modulator comprises a plurality of disks, wherein each of said plurality of disks spins at a different speed;
- means for optically computing inner products between the light field and said series of patterns;
- and
- means for recovering a signal based upon said inner products and at least one of a Greedy reconstruction algorithm, Matching Pursuit, Orthogonal Matching Pursuit, Basis Pursuit, group testing, LASSO, LARS, expectation-maximization, Bayesian estimation algorithm, belief propagation, wavelet-structure exploiting algorithm, Sudocode reconstruction, reconstruction based on manifolds, l1 reconstruction, l0 reconstruction, and l2 reconstruction.
An imaging system comprising:
- a multilayered modulator for modulating an incident light field by a series of patterns, wherein said multilayered modulator comprises a plurality of disks, wherein each of said plurality of disks spins at a different speed;
- a detector, said detector optically computing inner products between said light field and said series of patterns;
- and
- a processor, said processor recovering a signal based upon said inner products and at least one of a Greedy reconstruction algorithm, Matching Pursuit, Orthogonal Matching Pursuit, Basis Pursuit, group testing, LASSO, LARS, expectation-maximization, Bayesian estimation algorithm, belief propagation, wavelet-structure exploiting algorithm, Sudocode reconstruction, reconstruction based on manifolds, l1 reconstruction, l0 reconstruction, and l2 reconstruction.
A method for acquiring and recovering a signal, the method comprising the steps of:
- modulating an incident light field by a series of patterns with a multilayered modulator having a plurality of disks, wherein at least two of said plurality of disks spin at different speeds;
- optically computing inner products between said light field and said series of patterns;
- and
- recovering a signal based upon said inner products and at least one of a Greedy reconstruction algorithm, Matching Pursuit, Orthogonal Matching Pursuit, Basis Pursuit, group testing, LASSO, LARS, expectation-maximization, Bayesian estimation algorithm, belief propagation, wavelet-structure exploiting algorithm, Sudocode reconstruction, reconstruction based on manifolds, l1 reconstruction, l0 reconstruction, and l2 reconstruction.
A method for detecting or classifying a signal, the method comprising the steps of:
- modulating an incident light field by a series of patterns with a multilayered modulator having first and second disks, wherein said first and second disks spin at different speeds;
- optically computing inner products between said light field and said series of patterns;
- and
- comparing the optically computed inner products against a set of target templates or using a statistical test to detect the signal or classify a signal into one of a plurality of classes.
Dependencies are inferred from the claim text.