Yissum - Research Development Company of the Hebrew University

New system for balancing colors in videos

Posted by Yissum - Research Development Company of the Hebrew UniversityResponsive · Innovative Products and Technologies · Israel

Summary of the technology

Inexpensive video capturing devices and the increasing popularity of video sharing websites result in undesirable tonal fluctuations in video: minute changes in tonal characteristics, such as exposure, color temperature, brightness and contrast in a sequence of frames which are easily noticeable when the sequence is viewed. These fluctuations are typically caused by the camera’s automatic adjustment of its tonal settings while shooting.

Description of the technology

Description of the technology

Approach to reducing undesirable tonal fluctuations in video that operates on a continuous video shot by first designating one or more frames as anchors. The entire shot is then tonally aligned with each anchor: for each frame, an adjustment map is computed that indicates how each of its pixels should be modified in order to appear as if it were captured with the tonal settings of the anchor.

Specifications

The adjustment map is efficiently updated between successive frames by taking advantage of temporal video coherence and the global nature of the tonal fluctuations. Once a sequence has been aligned, it is possible to generate smooth tonal transitions between anchors and also further control its tonal characteristics in a consistent and principled manner.

Main advantages of its use

  • Once a sequence has been aligned, it is possible to generate smooth tonal transitions between anchors and also further control its tonal characteristics in a consistent and principled manner.
  • The adjustment map is efficiently updated between successive frames by taking advantage of temporal video coherence and the global nature of the tonal fluctuations.

Applications

  • Percent of total mobile audience (Age 13+) recording video on their mobile devices: 20.2% in the United States, 26.1% in Europe (Dec. 2010)
  • Video overall is more than a third of mobile usage - the average person watches video one out of every three times they turn on their phone.
  • Video streaming is the single fastest-growing application type for mobile users, jumping 92% from June 2010.

Additional information (attached documents)

Additional information (attached documents)

Related keywords

  • Electronics, IT and Telecomms
  • Telephone interconnect and other equipment
  • video
  • Video streaming
  • mobile phone
  • mobiles

About Yissum - Research Development Company of the Hebrew University

Technology Transfer Office from Israel

Yissum Research Development Company of the Hebrew University of Jerusalem Ltd. Founded in 1964 to protect and commercialize the Hebrew University’s intellectual property. Ranked among the top technology transfer companies, Yissum has registered over 8,900 patents covering 2,500 inventions; has licensed out 800 technologies and has spun-off 90 companies. Products that are based on Hebrew University technologies and were commercialized by Yissum generate today over $2 Billion in annual sales.

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