Real-time pre-distortion system for near-eye display based on FPGA

SHI Hua-kang; RAN Feng; SHEN Hua-ming; CHEN Wen-dong

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Real-time pre-distortion system for near-eye display based on FPGA

更新时间：2026-09-04

- Real-time pre-distortion system for near-eye display based on FPGA
- Vol. 38, Issue 4, Pages: 63-68(2021)
- 作者机构：
  
  1. 上海大学微电子研究与开发中心,上海,200444
  2. 上海大学机电工程与自动化学院,上海,200444
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2021
- 稿件说明：
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史华康, 冉峰, 沈华明, 陈文栋. 基于FPGA的近眼显示实时预畸变系统[J]. 微电子学与计算机, 2021, 38(4): 63-68.

SHI Hua-kang, RAN Feng, SHEN Hua-ming, et al. Real-time pre-distortion system for near-eye display based on FPGA[J]. 2021, 38(4): 63-68.
史华康, 冉峰, 沈华明, 陈文栋. 基于FPGA的近眼显示实时预畸变系统[J]. 微电子学与计算机, 2021, 38(4): 63-68. DOI：

SHI Hua-kang, RAN Feng, SHEN Hua-ming, et al. Real-time pre-distortion system for near-eye display based on FPGA[J]. 2021, 38(4): 63-68. DOI：

摘要

针对近眼显示器扩大视场角的需求，本文配合光学系统设计了一种基于FPGA的近眼显示实时预畸变系统.本系统采用基于片外存储查找表结构的坐标校正方法，结合双线性插值的灰度校正算法，利用片内Block RAM资源设计了一种图像数据按奇偶行分别存储的数据缓存结构，减小了数据缓存量，降低了输出延时，实现了高分辨率、高帧率视频图像的实时预畸变处理.实验结果表明，实时预畸变系统对光学系统产生的非线性几何畸变具有良好的校正效果，且处理延时小，显示图像清晰完整且可扩展性强.

Abstract

To meet the requirement of enlarging the field of view angle of near-eye display

a real-time pre-distortion system for near-eye display based on FPGA is designed. This system adopts the coordinate correction method based on off-chip storage lookup table structure and combined with the bilinear interpolation algorithm for calculating grayscale correction

the use of chip designs an image data Block RAM resources stored separately according to the odd lines of data caching structure

reduced the data cache memory

reduces the output delay

has realized the high resolution

high frame rate of video image real-time pre distortion processing. The experimental results show that the real-time pre-distortion system has a good correction effect on the nonlinear geometric distortion generated by the optical system

and the processing delay is small

the display image is clear and complete

and the scalability is strong.

关键词

Keywords

references

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