FPGA中Bayer到YCbCr图像格式转换的设计

Image Data Conversion from Bayer to YCbCr Based on FPGA

提出了一种基于FPGA平台的Bayer到YCbCr格式数据转换的设计方法。在Bayer到RGB格式转换阶段,对CMOS传感器输出的Bayer格式数据采用3×3双线性插值算法恢复真彩色图像;在RGB到YCbCr色彩空间转换阶段,结合色彩空间转换公式,优化数字逻辑结构进行硬件描述语言设计。实验仿真结果验证了系统设计的可行性及Bayer到YCbCr格式转换的正确性。

A method for data conversion from Bayer pattern to YCbCr which is based on FPGA platform is proposed in this paper. Firstly, in Bayer to RGB format conversion stage, the 3 ×3 bilinear interpolation algorithm is used for transforming Bayer format data which comes from CMOS sensor to regain true color image. Secondly, in the RGB to YCbCr color space conversion stage, the structure of digital logic with VHDL based on color space conversion formula is optimized. The simulation results verify the feasibility of the system design and the accuracy of the Bayer to YCbCr format conversion.