What is HDR Technology

High Dynamic Range Imagery technology ( HDR), is a powerful new tool available for both professional (Virtual Reality, post processing, hospitality, security, defence etc.) and scientific applications (biomedical, education etc.)

The goal of an HDR system is to create an electronic image that matches exactly, the high dynamic range of the human eye (Human Visual System = HVS) and can duplicate in term of the brightness, a Real Life picture scene.
The most effective way to obtain such a display is to use an LCD panel, replacing its common Back Light Unit (B.L.U.), typically based on a set of Cold Cathode Fluorescent tube Lamps (CCFL), with an array of high-power white LEDs.  
The idea is to light each small zone of the picture displayed on the LCD, with an LED driven by the specific luminous intensity of that small area of the picture.
That means if a scene has black details, keep off the LEDs under those details to achieve a true black, while where is a high luminous intensity area,  LEDs under it are turned on to maximum power. Grey scale areas are then obtained by modulating to intermediate levels the intensity of the LEDs using the HDR picture processing.

While a native HDR signal contains separated image and tone mapping streams, when fed with a standard FULL HD 1080p HDTV video signal, the HDR algorithm processes it to expand its dynamic range according to the HDR theory (Inverse Tone Mapping) and the resulting widened signal is then split into the two streams composing an HDR image:
the first is the RGB image to feed the LCD,
the second is a sub-sampled luminance image to feed the B.L.U. LEDs.
The HDR effect is obtained by the combination of the 8 bit per color gray levels on the LCD pixels, and the 8 bit luminance gray levels on the individual LED.  This results in an extremely high contrast ratio to the viewer, with very high intensity whites and totally dark blacks. At least 16bit video processing is thus required.

 

Moving from theory to reality: the SIM2 HDR Series
Up to now, devices capable to displaying these pictures were not available. Also a proper REFERENCE DESIGN for developing and accurately testing HDR displays was missing. In order to bridge this gap, SIM2 developed a new class of REFERENCE MONITORS.
With the HDR Series, SIM2 Multimedia offers to the market the absolute best display visualization technology available to date.
Whether you need the cutting edge of professional tools to accomplish your mission, or you want a partner to fully display your project quality, HDR47E series can make this decisive difference.