期刊论文

The Design of Image Overlay and VGA Display Based on FPGA

中文

南华大学学报(自然科学版)

1673-0062

2017

31

3

55-59

10.19431/j.cnki.1673-0062.2017.03.011

湖南省自然科学基金资助项目（16C1375）；

本校为第一机构

为了实现两幅图像的半透明叠加的 VGA显示, 根据图像叠加原理和 VGA显示原理, 使用A l t e r a公司的F P GA芯片C y c l o n eⅣE P 4 C E 1 5 F 1 7 C 8作为控制核心,采用V e r i l o g HD L语言实现图像叠加A l p h a算法, 采用移位操作解决F P GA处理浮点运算问题, 通过外部按钮来控制图像的透明度. 用 F P GA 控制实现图像叠加的VGA实时显示, 该设计方案具有体积小、 成本低、 速度快、 工作稳定等优点. Mo d e l s i m仿真结果和实际显示效果验证了设计的正确性与可行性.

In order to achieve the semi-transparent overlay of two images and VGA realtime display,according to the principle of image overlay and the principle of VGA display,Altera's chip Cyclone ⅣEP4CE15F17C8 is used as the control core.The image overlay Alpha algorithm is achieved by Verilog HDL language. And the shift operation is adopted to solve the problem of FPGA processing floating point. And the transparency of the image is controlled by external buttons. The image overlay VGA display is realized by FPGA control,which has advantages such as sm...