-to-RGB Color Space Conversion on FPGA-augmented TriMedia-32 Processor

This paper investigates Y UV -to-RGB color space conversion on FPGA-augmented TriMedia-32 processor. First, we outline the extension of TriMedia-32 architecture consisting of FPGA-based Reconfigurable Functional Units (RFU) and associated generic instructions. Then we analyse a YUV-RGB (RFU–specific) instruction which can process four pixels per call, and propose a scheme to implement the YUV-RGB operation on RFU. When mapped on an ACEX EP1K100 FPGA, the proposed YUV-RGB exhibits a latency of 10 and a recovery of 2 TriMedia-32@200 MHz cycles, and occupies 34% of the device. By configuring the YUV-RGB facility on the RFUs at application loadtime, YUV-to-RGB color space conversion can be computed on FPGA-augmented TriMedia-32 with a speed-up of 3:3 over the standard TriMedia-32. Keywords— Reconfigurable computing; color space conversion; VLIW processors; field-programmable gate arrays.