Smallpixel Pseudodtof Image Sensors With Chargedomain Signal Compression

• doi: 10.1109/VLSI-TSA/VLSI-DAT57221.2023.10134353
• title: Small-pixel pseudo-dToF image sensors with charge-domain signal compression
• publisher: IEEE
• isbn: 979-8-3503-3417-3
• issn:
• rank: 3586
• access_type: LOCKED
• content_type: Conferences
• abstract: Time-compressive computational CMOS image sensors can realize a new implementation of light detection and ranging (LiDAR), i.e., pseudo-direct time-of-flight (pseudo-dToF) depth imaging. They are based on the multi-tap charge modulator used in indirect ToF (iToF) image sensors and compress high-speed optical temporal signals in the charge domain in pixel. Therefore, large digital circuits for time-to-digital conversion or histogram builder used in conventional dToF image sensors based on the single photon avalanche diode (SPAD) are unnecessary. Nevertheless, they can detect multiple reflections under multipath interference, which is one of the advantages of dToF. Exploiting the small pixel size of the pseudo-dToF image sensor, high-resolution image sensors will be possible. In my talk, I will show extended depth range and detection of multiple reflections in dynamic scenes. Finally, I will discuss their applications to automobiles and unmanned aerial vehicles.
• article_number: 10134353
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10134353
• html_url: https://ieeexplore.ieee.org/document/10134353/
• abstract_url: https://ieeexplore.ieee.org/document/10134353/
• publication_title: 2023 International VLSI Symposium on Technology, Systems and Applications (VLSI-TSA/VLSI-DAT)
• conference_location: HsinChu, Taiwan
• conference_dates: 17-20 April 2023
• publication_number: 10133934
• is_number: 10133941
• publication_year: 2023
• publication_date: 17-20 April 2023
• start_page: 1
• end_page: 2
• citing_paper_count: 0
• citing_patent_count: 0
• download_count: 390
• insert_date: 20230531
• index_terms:
  • ieee_terms:
    • Image coding
    • Laser radar
    • Very large scale integration
    • Optical imaging
    • Reflection
    • Optical sensors
    • Optical reflection
  • dynamic_index_terms:
    • Image Sensor
    • Camera Sensor
    • Signal Compression
    • High-resolution
    • Unmanned Aerial Vehicles
    • Light Detection And Ranging
    • Lidar
    • Optical Signal
    • Depth Images
    • Computer Image
    • Image Calculator
    • Digital Circuits
    • Digital Circuitry
    • Charge Transition
    • Charge Modulation
    • Charged Domain
    • Avalanche Diode
    • Single-photon Avalanche Diode
    • Multipath Interference
    • Image Compression
    • Time-to-digital Converter
    • Sub-pixel
• isbn_formats:
  • format: Print on Demand(PoD) ISBN, value: 979-8-3503-3417-3, isbnType: New-2005
  • format: Electronic ISBN, value: 979-8-3503-3416-6, isbnType: New-2005
• authors:
  • Author Name: Keiichiro Kagawa
    Affiliation: Shizuoka University, Hamamatsu, Shizuoka, Japan
    Author URL: https://ieeexplore.ieee.org/author/37278023200
    ID: 37278023200
    Order: 1
    Author Affiliations:
    • Shizuoka University, Hamamatsu, Shizuoka, Japan

Image Sensor

• sensor_type: CMOS
• resolution: 212x188 (subpixels)
• dynamic_range: Not specified
• pixel_size: 11.2 μm
• dark_current: Not specified

Optical Data

• focal_length: Not specified
• aperture: Not specified
• field_of_view: Not specified
• distortion: Not specified

Performance Metrics

• frame_rate: 21 fps
• shutter_speed: Shutter clock of 303 MHz (maximum shutter length 256-bits)

Applications & Benefits

• cell_imaging: Not specified
• benefits: High-resolution imaging sensors, capable of detecting multiple reflections under multipath interference.

Supporting Organizations

• supported_by: Grants-in-Aid for Scientific Research (S) Numbers 17H06102 and 18H05240, and JST, CREST, JPMJCR22C1.

Manuscript Details

• publication_date: 17-20 April 2023

Relevancy Score

• score: 10
• missing_fields:
  • fill_factor
  • quantum_efficiency
  • readout_speed
  • temporal_noise
  • fixed-pattern_noise
  • microlenses
  • on-chip_colour_filters
  • global_or_rolling_shutters
  • backside_illumination

Processed JSON Filename

request_77793df4-5dc6-4485-8cb7-6e7a893085a8-smallpixel_pseudodtof_image_sensors_with_chargedomain_signal_compression.json