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Richard Baraniuk Kevin Kelly Rice University dsp.rice/cs/cscamera

The Single-Pixel Camera Compressive Sensing in Action. Richard Baraniuk Kevin Kelly Rice University dsp.rice.edu/cs/cscamera. Compressive Sensing. Sensing via randomized dimensionality reduction. sparse signal. random measurements. nonzero entries.

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Richard Baraniuk Kevin Kelly Rice University dsp.rice/cs/cscamera

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  1. The Single-Pixel Camera Compressive Sensing in Action Richard Baraniuk Kevin Kelly Rice University dsp.rice.edu/cs/cscamera

  2. Compressive Sensing Sensing via randomized dimensionality reduction sparsesignal random measurements nonzero entries • Recovery: solve an ill-posed inverse problem exploit the geometrical structure of sparse/compressible signals

  3. “Single-Pixel” CS Camera scene single photon detector imagereconstructionorprocessing DMD DMD random pattern on DMD array w/ Kevin Kelly

  4. “Single-Pixel” CS Camera scene single photon detector imagereconstructionorprocessing DMD DMD random pattern on DMD array … • Flip mirror array M times to acquire M measurements • Sparsity-based (linear programming) recovery

  5. Single Pixel Camera Object LED (light source) Lens 2 Lens 1 Photodiode circuit DMD+ALP Board

  6. Single Pixel Camera Object LED (light source) Lens 2 Lens 1 Photodiode circuit DMD+ALP Board

  7. Single Pixel Camera Object LED (light source) Lens 2 Lens 1 Photodiode circuit DMD+ALP Board

  8. Single Pixel Camera Object LED (light source) Lens 2 Lens 1 Photodiode circuit DMD+ALP Board

  9. First Image Acquisition target 65536 pixels 1300 measurements (2%) 11000 measurements (16%)

  10. Second Image Acquisition 4096 pixels 500 random measurements

  11. Single-Pixel Camera single photon detector imagereconstructionorprocessing DMD DMD random pattern on DMD array

  12. CS Low-Light Imaging with PMT true color low-light imaging 256 x 256 image with 10:1 compression [Nature Photonics, April 2007]

  13. CS Hyperspectral Imager spectrometer hyperspectral data cube 450-850nm 1M space x wavelength voxels 200k random sums

  14. CS THz Camera 32 x 32 PCB masks THz Amplitude Object mask CS recon 300 measurements CS recon 600 measurements THz Phase with Dan Milttleman, Rice U

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