A New FPGA and Programmable SoC Based VLSI Architecture for Histogram Generation of Grayscale Images for Image Processing Applications

A novel histogram generation hardware architecture, which can develop histogram for all types of grayscale images of size (256 x 256), is presented in this paper. The histogram produced from the proposed hardware gives exactly the same information as obtained from a histogram plot using simulation tool like Matlab with 100 percent accuracy. Hardware realization of the architecture makes it suitable for generating real-time histogram in medical and military applications which is practically difficult in software based implementations. Experimental results shows that the frequency of operation of the proposed architecture is very high both for Field Programmable Gate Array (FPGA) as well as for Programmable SoC (PSoC) based implementation. To the best of our knowledge, this is the first hardware implementation for grayscale image histogram generator for the selected histogram generation algorithm mentioned in this paper.