To overcome the shortcomings of the image sensors, many digital cameras and smart phones come equipped with a “HDR mode”.
Those who commonly take pictures on a digital camera may be familiar with the problem of capturing both bright and dark parts of the picture and maintaining high levels of detail in both of these areas. The dynamic range of a video signal is the range between the lowest and highest light level. So it is no wonder that high brightness HDR images are so eye-catching. That is not just marketing: the “Hunt effect” is a well-known phenomenon whereby the colourfulness of an object increases with luminance and video engineers have always known that increasing the contrast of an image makes it appear sharper as the gradient of edges increases. They are more realistic, more colourful, subjectively sharper and more engaging than standard dynamic range (SDR) images. Those who have been lucky enough to see High Dynamic Range (HDR) TV pictures cannot help but be blown away by their impact.
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These may include a higher spatial resolution (more pixels on the screen), a higher frame rate (more pictures per second), wider colour gamut (more colours than before), and higher dynamic range.īBC R&D - Defining the Future of TelevisionīBC R&D - How to Adjust Your TV to Enjoy the Best Picture Quality in HDRīBC R&D - High Frame Rate TV at the Commonwealth GamesĪs BBC R&Ds Andrew Cotton recently wrote in an article for DVB Scene: London New Year's Eve Fireworks 2014/2015 Highlights (This video clip is not UHD/HDR!) What is HDR?īBC R&D is investigating a wide range of technologies that may feature in the next generation of broadcast.
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