A Dual-Conversion-Gain Video Sensor Dewarping and Overlay on a Single Chip with

📋 论文概要

该论文提出了一种单芯片双转换增益视频传感器，集成了畸变校正和叠加功能，解决了汽车倒车摄像头在低光和高光环境下的宽动态范围问题以及广角镜头引起的光学畸变。通过片上空间处理电路实现实时校正，提高了图像可解释性。

💡 主要创新点

• 采用双转换增益技术实现宽动态范围，兼顾低光和高光性能。
• 在单芯片上集成空间处理电路，实现光学畸变校正和图像叠加功能。
• 将CMOS图像传感器与数字处理单元整合为系统级芯片（SSoC），降低系统成本和功耗。

🏷 关键词

📄 原文摘要

Aptina Imaging, Bracknell, United Kingdom Aptina Imaging, Corvallis, OR 2 Automotive sensors such as video-reversing cameras demand excellent lowlight performance whilst also being able to handle full sunlight. Furthermore, the wide-angle-lens systems employed in such cameras introduce optical distortion, and the cameras are often mounted low down on the vehicle, making the picture hard to interpret. Figure 2.8.1 is a block diagram of a sensor system-on-a-chip (SSoC), combining a CMOS video sensor having excellent lowlight performance with spatial-processing circuitry to correct optical warping and adjust perspective, together with an overlay circuit to further assist the vehicle driver, producing NTSC video. Figure 2.8.7 shows the die micrograph with a breakdown of the various areas; the die are is 6.4×7.3mm2. The sensor is a 60fps progressive 640×480-pixel readout with a dual-conversion-gain (DCG) 5.6µm pixel. To obtain low noise, prior to column capacitor

👥 作者与机构

Anthony Huggett1, Chris Silsby2, Sergi Cami1, Jeff Beck2, 1