一种基于FPGA的图像格式转换设计

为了实现图像的实时处理,常采用现场可编程门阵列（FPGA）对采集到的图像数据首先进行格式转换处理。本文以对Micron MT9V112传感器的三种图像格式输出的处理为例,首先就YCbCr4：2：2转YCbCr4：4：4,RGB565转RGB888,Bayer格式转RGB888及降噪的原理进行了介绍,然后应用Verilog HDL语言设计出相应的硬件模块,最后结合MATLAB工具对硬件模块处理后的数据做了相应的仿真。仿真结果表明,该设计对分辨率低于640x480的图像数据能够很好的满足其实时性要求,达到了预期的效果。

Design of Image Format Conversion Based on FPGA

During the procedure of real–time image processing,FPGA was often utilized to convert the format of collected digital image.This paper looks at how to process the conversion of 3 types format image,which comes from Micron MT9V112 CMOS DIGITAL IMAGE SENSOR.The study first introduces YCbCr4：2：2 to YCbCr4：4：4,RGB565 to RGB888,Bayer data to RGB888 and image denoising methods.It then gives the design module based on Verilog HDL and simulation via MATLAB.The simulation result demonstrates that this module can successfully process 640x480 pixels with desirable real-time results.