Design of DCT Hardware Accelerator using FPGA for Medical Image Authentication

The biomedical sector has undergone significant changes due to the continuous advancements in technology and computer networks. Multimedia data is now being utilized to transmit crucial biomedical information, including patient reports, diagnoses, and hospital information. To convert multimedia files to transform domain from spatial domain for encryption with a watermark, a Discrete Cosine Transform (DCT) is utilized. This involves incorporating the DCT into the process of transforming the file, allowing it to be modified and encrypted while retaining its original content. To achieve this a hardware accelerator that performs DCT technique is designed and implemented using Vivado HLS. The result shows that the designed architecture possesses high level of resilience, and the image quality is preserved after watermarking.