Design and Implementation of 5-D IIR Depth Velocity Filters for Light Field Video Processing
Chamith Wijenayake, Namalka Liyanage, Chamira U. S. Edussooriya, H. Seatang, P. Agathoklis, Len T. Bruton · IEEE Transactions on Circuits & Systems II Express Briefs · 2018
The design and hardware implementation of a low-complexity signal processing algorithm is proposed for real-time depth-velocity filtering in 5-D light field videos (LFVs). The proposed design is based on a stable 5-D infinite impulse response digital filter having three cascaded sections, each synthesized using the concept of multidimensional passive network resonance. A novel semi-systolic hardware implementation is proposed. Each section of the filter is implemented and tested on a Xilinx Virtex-7 FPGA platform using MATLAB-based hardware co-simulation with both synthetic and real LFV signals. A real-time processing throughput of 467 LFV frames/s is implied with each section of the filter operating at 204, 164, and 115 MHz for input LFV frames of size 9 × 9 × 220 × 360.