177 Db Linear Dynamic Range Pixels Of Interest Dslr Caos Camera

• doi: 10.1109/JPHOT.2019.2909430
• title: 177 dB Linear Dynamic Range Pixels of Interest DSLR CAOS Camera
• publisher: IEEE
• isbn:
• issn: 1943-0647
• rank: 26
• access_type: OPEN_ACCESS
• content_type: Journals
• abstract: For the first time, demonstrated is an extreme linear Dynamic Range (DR) Pixels of Interest (POI) [i.e., Coded Access Optical Sensor (CAOS)] Digital Single Lens Reflex (DSLR) camera design that engages three different types of photosensors within one optomechanical assembly to smartly identify POI across a one billion to one light irradiance range. A pixelated CMOS sensor provides a limited DR and linearity image by engaging a moveable mirror placed between the Digital Micromirror Device (DMD) and the frontend imaging lens. Next using DMD control, non-POI light is directed away from the chosen point photodetector (PD) engaged for high DR POI image recovery, giving the PD an improved use of quantum well capacity. For brighter POI, a solid state photodiode point PD with an electronic gain controlled amplifier is engaged while for weaker light POI, a photomultiplier tube (PMT) with variable optical gain is deployed. POI imaging is achieved using time-frequency CAOS modes via DMD control and time-frequency correlation and spectral digital signal processing. A 123.4 dB linear DR POI recovery is achieved for a custom incoherent white light 36-patch target while a record 177 dB linear DR recovery is demonstrated for a single patch 633 nm laser target. For the first time, a 1023 POI frame, real-time 48 frames/s update rate CAOS imaging is demonstrated for tracking a changing focal spot moving laser target.
• article_number: 8681550
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=8681550
• html_url: https://ieeexplore.ieee.org/document/8681550/
• abstract_url: https://ieeexplore.ieee.org/document/8681550/
• publication_title: IEEE Photonics Journal
• conference_location:
• conference_dates:
• publication_number: 4563994
• is_number: 8697068
• publication_year: 2019
• publication_date: June 2019
• start_page: 1
• end_page: 10
• citing_paper_count: 12
• citing_patent_count: 0
• download_count: 1449
• insert_date: 20190404
• index_terms:
  • ieee_terms:
    • Cameras
    • Optical imaging
    • Optical sensors
    • Signal to noise ratio
    • Optical attenuators
    • Optical variables measurement
  • author_terms:
    • Optical imager
    • camera
    • digital micromirror device
    • high dynamic range imaging.
  • dynamic_index_terms:
    • Linear Range
    • Linear Dynamic Range
    • White Light
    • Photomultiplier Tube
    • High Dynamic Range
    • Image Recovery
    • Digital Micromirror Device
    • Optical Gain
    • Variable Gain
    • Electronic Gain
    • White Target
    • Incoherent Light
    • Pixel Of Interest
    • Fast Fourier Transform
    • Laser Beam
    • Logarithmic Scale
    • Optical Density Values
    • Time Slot
    • Optical Power
    • Spatial Noise
    • Robust Image
    • Linear Image
    • Flat State
    • Optical Noise
    • Variable Optical Attenuator
    • Code Division Multiple Access
    • Time Division Multiple Access
    • Individual Patches
    • Robust Recovery
• authors:
  • Author Name: Nabeel A. Riza
    Affiliation: School of Engineering, University College Cork, Cork, Ireland
    Author URL: https://ieeexplore.ieee.org/author/37267836400
    ID: 37267836400
    Order: 1
    Author Affiliations:
    • School of Engineering, University College Cork, Cork, Ireland
  • Author Name: Mohsin A. Mazhar
    Affiliation: School of Engineering, University College Cork, Cork, Ireland
    Author URL: https://ieeexplore.ieee.org/author/37086450356
    ID: 37086450356
    Order: 2
    Author Affiliations:
    • School of Engineering, University College Cork, Cork, Ireland

Image Sensor

• sensor_type: CMOS
• resolution: 2.1Mp
• dynamic_range: 177 dB
• pixel_size: Not specified
• dark_current: Not specified

Optical Data

• focal_length: 6 cm, 5 cm (L2 and L3)
• aperture: Not specified
• field_of_view: Not specified
• distortion: Not specified

Performance Metrics

• frame_rate: 48 fps
• signal_to_noise_ratio: SNR > 22659.4
• shutter_speed: 0.592 ms

Applications & Benefits

• cell_imaging: Not specified
• benefits: High dynamic range imaging for robust capture in extreme lighting conditions.

Supporting Organizations

• supported_by: IEEE

Manuscript Details

• publication_date: June 2019

Relevancy Score

• score: 9
• missing_fields:
  • pixel_size
  • dark_current
  • aperture
  • field_of_view
  • distortion
  • sensitivity
  • noise

Processed JSON Filename

request_35235e85-8114-4b1d-8d75-c8a8089e1c47-177_db_linear_dynamic_range_pixels_of_interest_dslr_caos_camera.json