Low power FPGA-based image processing core for wireless capsule endoscopy

Abstract

The paper presents an FPGA-based image and data processing core for future generation wireless capsule endoscopy (WCE). The main part of the presented core is an image compressor, for which a hardware implementation architecture requiring only two clock cycles for processing a single image pixel is proposed. Apart from the image compressor, the presented core includes a camera interface, a FIFO queue storing the compressed image bitstream, a forward error correction encoder protecting transmitted data against random and burst transmission errors, and a system controller supervising internal WCE operations. The presented core has been implemented in a single ultra low power, 65 nm FPGA chip. Power consumption of the designed FPGA core was determined to be comparable to other ASIC-based WCE systems.