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Special Issue "Recent Advances in CMOS Image Sensor"

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Electronic Sensors".

Deadline for manuscript submissions: 25 February 2023 | Viewed by 2901

Special Issue Editor

Dr. De Xing Lioe
E-Mail Website
Guest Editor
Research Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Nakaku, Hamamatsu, Shizuoka 432-8011, Japan
Interests: CMOS image sensor; photodetector; image sensor readout circuits; time-resolved spectroscopy; medical and biological imaging

Special Issue Information

Dear Colleagues,

The CMOS image sensor has evolved from an image acquisition device to having sensing capabilities. Continuous innovations have seen advancements and improvements in areas including pixel size, read noise, readout speed, efficiency, time resolution, power consumption, and stacking structure. These enable various kinds of applications, such as high-dynamic-range, time-of-flight, single-photon counting, augmented reality/virtual reality, biomedical imaging, and many others. CMOS image sensors exist in a diverse variety of products in our everyday life, from consumer electronics such as mobile phones and digital cameras to automotive, security, medical, and others. These are expected to continuously grow with advanced performance and new functionalities. This Special Issue aims at highlighting the recent developments in CMOS image sensor technology and applications.

Areas of interest include, but are not limited to:

  • Circuit and pixel designs of CMOS image sensor;
  • Low noise;
  • High-dynamic range;
  • Global shutter;
  • High-speed imagers;
  • Photon-counting imagers;
  • Time-of-flight;
  • Computational and biomedical imaging;
  • Microscopy and spectroscopy;
  • Emerging applications.

Dr. De Xing Lioe
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sensors is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Published Papers (2 papers)

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Research

Article
Resolving Multi-Path Interference in Compressive Time-of-Flight Depth Imaging with a Multi-Tap Macro-Pixel Computational CMOS Image Sensor
Sensors 2022, 22(7), 2442; https://doi.org/10.3390/s22072442 - 22 Mar 2022
Viewed by 607
Abstract
Multi-path interference causes depth errors in indirect time-of-flight (ToF) cameras. In this paper, resolving multi-path interference caused by surface reflections using a multi-tap macro-pixel computational CMOS image sensor is demonstrated. The imaging area is implemented by an array of macro-pixels composed of four [...] Read more.
Multi-path interference causes depth errors in indirect time-of-flight (ToF) cameras. In this paper, resolving multi-path interference caused by surface reflections using a multi-tap macro-pixel computational CMOS image sensor is demonstrated. The imaging area is implemented by an array of macro-pixels composed of four subpixels embodied by a four-tap lateral electric field charge modulator (LEFM). This sensor can simultaneously acquire 16 images for different temporal shutters. This method can reproduce more than 16 images based on compressive sensing with multi-frequency shutters and sub-clock shifting. In simulations, an object was placed 16 m away from the sensor, and the depth of an interference object was varied from 1 to 32 m in 1 m steps. The two reflections were separated in two stages: coarse estimation based on a compressive sensing solver and refinement by a nonlinear search to investigate the potential of our sensor. Relative standard deviation (precision) and relative mean error (accuracy) were evaluated under the influence of photon shot noise. The proposed method was verified using a prototype multi-tap macro-pixel computational CMOS image sensor in single-path and dual-path situations. In the experiment, an acrylic plate was placed 1 m or 2 m and a mirror 9.3 m from the sensor. Full article
(This article belongs to the Special Issue Recent Advances in CMOS Image Sensor)
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Article
A Dual-Mode 303-Megaframes-per-Second Charge-Domain Time-Compressive Computational CMOS Image Sensor
Sensors 2022, 22(5), 1953; https://doi.org/10.3390/s22051953 - 02 Mar 2022
Viewed by 1628
Abstract
An ultra-high-speed computational CMOS image sensor with a burst frame rate of 303 megaframes per second, which is the fastest among the solid-state image sensors, to our knowledge, is demonstrated. This image sensor is compatible with ordinary single-aperture lenses and can operate in [...] Read more.
An ultra-high-speed computational CMOS image sensor with a burst frame rate of 303 megaframes per second, which is the fastest among the solid-state image sensors, to our knowledge, is demonstrated. This image sensor is compatible with ordinary single-aperture lenses and can operate in dual modes, such as single-event filming mode or multi-exposure imaging mode, by reconfiguring the number of exposure cycles. To realize this frame rate, the charge modulator drivers were adequately designed to suppress the peak driving current taking advantage of the operational constraint of the multi-tap charge modulator. The pixel array is composed of macropixels with 2 × 2 4-tap subpixels. Because temporal compressive sensing is performed in the charge domain without any analog circuit, ultrafast frame rates, small pixel size, low noise, and low power consumption are achieved. In the experiments, single-event imaging of plasma emission in laser processing and multi-exposure transient imaging of light reflections to extend the depth range and to decompose multiple reflections for time-of-flight (TOF) depth imaging with a compression ratio of 8× were demonstrated. Time-resolved images similar to those obtained by the direct-type TOF were reproduced in a single shot, while the charge modulator for the indirect TOF was utilized. Full article
(This article belongs to the Special Issue Recent Advances in CMOS Image Sensor)
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