基于FPGA的视频预处理系统的建模与仿真

Modeling and emulation of video preprocess system based on FPGA

为了提高基于FPGA的视频处理效果,降低FPGA处理视频的开发难度,结合使用开发工具System Generator和Accel-DSP,对基于IP的系统开发方法进行了研究,构建了一种视频预处理系统模型。利用双线性插值算法进行Bayer格式图像的彩色还原,通过中值滤波器模块降低图像噪声,来提高图像整体画质。研究基于FPGA的DSP开发新方法,利用已有模块和AccelDSP开发的新模块,系统地设计整个模块。最后,以实例展示了基于System Generator的模型,验证了该方法的可行性和有效性。

In order to improve the video processing effects based on FPGA and decrease the development difficulty of FPGA processing video,a new method and its implementation combining with system generator and AccelDSP is put forward by a research in the system development theory based on IP and constructing the model of video preprocess system.Firstly,bilinear interpolation algorithm is generated with the colour reproduction of the Bayer format images,and improving the overall image quality by ducing the image noise.Secondly, the new DSP development theory based on FPGA systematically design the whole module by using the exicted module and the new modules ofAccelDSP development.Finally,by demonstrating the model based on systemgenerator,the feasibility and effectiveness of the method is verified.