BELOW The intuitive TrueLight interface gives users full control of RGB to RGBW conversion RIGHT RGB illumination is shown of inside the circle vs RGBW illumination in the rest of the block
skin tones and eliminating any potential colour shifts. But if every pixel is RGBW, how is this additional emitter controlled when the source video only contains RGB data? How is colour accuracy maintained with the extra complexity of extra emitters? When you’re displaying RGB video with RGB emitters, there is only one right answer to perfectly reproduce the specified colour – and a processing pipeline aims to achieve that single, perfect result. But once there are more than three emitters, multiple potential methods emerge to reproduce a colour (known as metamers). The correct metamer for your application will depend on factors which cannot be known when the panel is being manufactured; it may change scene to scene. Furthermore, a fixed mapping from RGB to RGBW is incompatible with per-pixel calibration, which is a fundamental requirement for decent image quality from LED video. These are dynamic decisions that need to be in the hands of the creative team. Control over complexity TrueLight®, a game-changing new technology from Brompton Technology, is the answer. It builds upon our unique Dynamic Calibration technology to
Clearly different This is all interesting in theory – but does it make a big difference in the real world? Absolutely! You will be surprised how different some colours look when illuminated by RGB vs RGBW. As seen above, using a model, you can clearly see how skin tones look flushed under RGB, but much more natural under RGBW. The benefits for in-camera visual effects are clear, but it is also relevant for any virtual reality or simulator application where the screen might illuminate the foreground. In any such scenarios, the overarching goal should be to preserve realism (which means maintaining colour accuracy for both virtual background and foreground elements).
enable RGBW panels to be fully per-pixel colour-calibrated and ensure that colour accuracy can be maintained at all times. TrueLight also empowers users with comprehensive control of how the RGB to RGBW conversion is achieved. This is done through an intuitive user interface, so you can effortlessly get the right result for your particular application. Spectral Preference allows you to control which mix of emitters will be chosen to reproduce the requested colour, while other advanced controls let the user tune the TrueLight algorithm to suit their particular situation. However, achieving this requires algorithms which are many times more complex than the traditional legacy RGB calibration (approximately 60 times more in fact!). For this reason, TrueLight requires the power of the award-winning Tessera G1 receiver card.
To read the full article, or for more information, visit bromptontech.com/technology/truelight/
49
definitionmags
Powered by FlippingBook