Abstract: A volumetric display system based on FPGA and DLP technologies is raised. FPGA is used to construct the graphical processing unit, controlling and propagating video streams synthesized after image dithering and layer combined algorithms. This video stream is passed down inside the FPGA through SD card controlling unit, DDR2 high speed memory control, pixel frame converter and HDMI high resolution signal transmitting modules. Afterwards, the video stream is captured by the receiving end of the DLP projector, inside the projector’s video decoding module, the digital electrical signal is converted to light signal and projected to a spinning display underneath. This method allows the viewer perceiving a multi-angled 3D image hovering in air without the wearing of special glasses.

Key words: FPGA, DLP, hardware/software co-design, volumetric display system

摘要： 提出一种基于FPGA和DLP的旋转体三维图像生成系统的设计方法。该方法使用FPGA搭建成像处理单元, 对图像抖动与图层叠加算法处理后的合成图像视频流进行传输控制。视频流经SD卡存储控制单元、DDR2高速内存控制单元、像素帧处理和HDMI高清图像发送模块, 由DLP投影仪内的图像处理单元进行解码, 并将解码后的数字信号转化为光信号, 投射到高速旋转接收屏。该方法可使观测者在不佩戴3D眼镜的情况下, 从高速旋转屏中观看到物体多角度的三维空间立体图像。

关键词: FPGA, DLP, 软硬件协同, 多角度图像生成系统