Design and implementation of video image rotating hardware accelerator based on FPGA
Lihong Qin · Transducer and Microsystem Technologies · 2010
A video image rotation system based on FPGA was designed.Using image rotation matrix computing and bilinear interpolation to implement video image rotation in the Nios environment.In order to improve the speed of system,CORDIC algorithm,which replaces the trigonometric function computing in rotation matrix was used to realize hardware acceleration and import this module to the ALU of the Nios core in custom instruction.Experiment results show that this method highly improves the speed and performance of this system.