Novel Image Contrast Enhancement for SoC ofSmall Mobile Display

International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering

article

Jin-Young Chung¹  Ki-Doo Kim¹ 

[1] School of Electrical Engineering, Kookmin University

关键词: Mobile display;    Contrast Enhancement;    Histogram Stretching;    SoC;    FPGA;   

来源: Research & Reviews

【 摘 要 】

Recently,the mobile phone has emerged as a leading icon of the convergence of consumer electronics. A wide variety of mobile phone applications such as DMB (digital multimedia broadcasting), digital photography, video telephony, and full internet browsing are now available to consumers. To meet the demands of these applications, image quality has become increasingly important. Furthermore, touch windowsare popular on mobile display panels,but they cause contrast loss because ofthe low transmittance of ITO film. This paper presents an image contrast enhancement algorithm to be embedded on aSoC.A clipped histogram stretching (CHS) method is proposed here to enable the algorithm to adapt to the input images, while an Sshaped curve algorithm and a gain/offset method are proposed for static applications. Finally, the performance of the proposed algorithm is evaluated using histograms, RGB pixel distributions, entropy values, and dynamic range values of the resulting images.

【 授权许可】

Unknown