Evaluation of contrast limited adaptive histogram equalization (CLAHE) enhancement on a FPGA

This paper presents the CLAHE method of contrast enhancement targeted to a FPGA based embedded platform. A novel approach to constructing the algorithm utilizing FPGA resources is discussed. A comparative accuracy analysis is performed against the equivalent software implementation. The FPGA resources and operational power consumption are also highlighted in the considerations required to include effective contrast enhancement on a FPGA video chain.