CMOS image sensor with pixel-wise exposure programmability for computational imaging applications

具有逐像素曝光可编程性的 CMOS 图像传感器，适用于计算成像应用

• 批准号: 516239-2017
• 负责人: Mirabbasi, Shahriar
• 金额: $ 9.11万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Idea to Innovation
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=618651
• 关键词: CMOS; image; sensor; pixel; wise

Digital cameras have become ubiquitous in the past decade, primarily due to their widespread adoption in smartphones. Over the past ten years, advances in the image sensor design have enabled 20+ megapixel (MP) image sensors, high sensitivity, and rapid imaging; however, CMOS image sensors (CISs) continue to suffer in advanced imaging applications such as motion deblurring (e.g., debarring of the blurred image of a fast car), defocus deblurring (e.g., foreground versus background focusing when there are multiple objects in different distances from the camera) and 3 dimensional (3D) imaging. In this application, we propose to build a computational CMOS image sensor (CIS) using the technology we have developed at the University of British Columbia which will target the portable device market and smartphones. Specifically, we will demonstrate the value of our technology as a secondary computational camera in mobile devices to enable pixel-wise high-speed motion deblurring, 3 dimensional (3D) focal-stack imaging, and adjustable dynamic range - all in one integrated sensor chip. We have already verified the functionality of the proposed pixel design in a 10x10 pixel array. In the application, we plan to design, fabricate, and experimentally verify the functionality of a industry standard quarter VGA (QVGA) image sensor (320x240 pixel array) along with all the required peripheral signal processing circuitry, all on the same chip. We also will develop a dual camera system using a high-resolution off-the-shelf image sensor along with our proposed QVGA image sensor along with the required software. The proposed CIS will facilitate performing the computational imaging algorithms in the dual camera setup as a proof-of-concept of the proposed technology.

数码相机在过去十年中变得无处不在，主要是因为它们在智能手机上的广泛采用。在过去的十年中，图像传感器设计的进步使2000多万像素（MP）图像传感器，高灵敏度和快速成像成为可能；然而，CMOS图像传感器（CISs）在高级成像应用中继续受到影响，例如运动去模糊（例如，去除高速汽车的模糊图像），散焦去模糊（例如，当与相机距离不同的有多个物体时，前景与背景对焦）和三维（3D）成像。在这个应用程序中，我们建议使用我们在不列颠哥伦比亚大学开发的技术构建一个计算CMOS图像传感器（CIS），该技术将针对便携式设备市场和智能手机。具体来说，我们将展示我们的技术作为移动设备中的二级计算相机的价值，以实现逐像素的高速运动去模糊，三维（3D）焦点堆叠成像和可调动态范围-所有这些都在一个集成的传感器芯片中。我们已经在一个10x10像素阵列中验证了所提出的像素设计的功能。在该应用程序中，我们计划设计，制造和实验验证工业标准四分之一VGA （QVGA）图像传感器（320x240像素阵列）以及所有所需的外围信号处理电路的功能，所有这些都在同一芯片上。我们还将开发一个双摄像头系统，使用高分辨率现成的图像传感器以及我们提出的QVGA图像传感器以及所需的软件。拟议的CIS将促进在双摄像头设置中执行计算成像算法，作为拟议技术的概念验证。