Image Contrast Enhancement Technique For Standard Definition Television

Abstract

Consumer demand for products that utilize enhanced images has risen tremendously, with an expected growth continuing well into the next decade. Research has proved that assuring high contrast, saturation and resolution is required to achieve a high quality TFT-LCD system display. A contrast enhancement scheme named Adaptively Increasing the Value of Histogram Equalization (AIVHE), based on the Histogram Equalization (HE) method, poses a convenient and effective mechanism to control the rate of contrast enhancement. AIVHE offers a gradual mean brightness increment of image, thus, modifying the original probability density function (PDF). For verifying the AIVHE, this project will implement an AIVHE algorithm than can be used on FPGA hardware of the TFT-LCD development platform for real-time image processing. This research proves that the method can be implemented on FPGA hardware, providing a powerful real time image processing ability that reaches time consuming operation demand.