Ceramic Tile Defect Inspection System Implemented on FPGA

Modernization in factories is the key for production and product quality. However, this modernization can involve an investment that companies cannot take, leaving them out of adaptation to Industry 4.0. In the ceramic tile manufacturing industry visual inspections are used to determine the quality of the final product. These tasks are carried out by operators exposed to risky environments. This work presents a low-cost solution for automatic ceramic tile inspection. The defects analyzed are blobs, pinholes, corners, edges and dimensions. All the algorithms were implemented on SoC FPGA (Xilinx Zynq device) using high level synthesis. The algorithms were verified and validated in a controlled environment built to evaluate visual inspection applications. The results of resource utilization and processing times indicate that the implementation in a real production line is feasible.