  Wide dynamic range (WDR) image tone mapping is in high demand in many
applications like film production, security monitoring, and photography. It is
especially crucial for mobile devices because most of the images taken today
are from mobile phones, hence such technology is highly demanded in the
consumer market of mobile devices and is essential for a good customer
experience. However, high-quality and high-performance WDR image tone mapping
implementations are rarely found in the mobile-end. In this paper, we introduce
a high performance, mobile-end WDR image tone mapping implementation. It
leverages the tone mapping results of multiple receptive fields and calculates
a suitable value for each pixel. The utilization of integral image and integral
histogram significantly reduce the required computation. Moreover, GPU parallel
computation is used to increase the processing speed. The experimental results
indicate that our implementation can process a high-resolution WDR image within
a second on mobile devices and produce appealing image quality.
