Resources Contact Us Home
System and process for generating high dynamic range video

Image Number 18 for United States Patent #7239757.

A system and process for generating High Dynamic Range (HDR) video is presented which involves first capturing a video image sequence while varying the exposure so as to alternate between frames having a shorter and longer exposure. The exposure for each frame is set prior to it being captured as a function of the pixel brightness distribution in preceding frames. Next, for each frame of the video, the corresponding pixels between the frame under consideration and both preceding and subsequent frames are identified. For each corresponding pixel set, at least one pixel is identified as representing a trustworthy pixel. The pixel color information associated with the trustworthy pixels is then employed to compute a radiance value for each pixel set to form a radiance map. A tone mapping procedure can then be performed to convert the radiance map into an 8-bit representation of the HDR frame.

  Recently Added Patents
Compositions and methods for activating innate and allergic immunity
MRAM with sidewall protection and method of fabrication
Method and system for providing intelligent call rejection and call rollover in a data network
Lead with lead stiffener for implantable electrical stimulation systems and methods of making and using
Lighting apparatus
Audio processing in a multi-participant conference
Method and apparatus for reducing cost of optical amplification in a network
  Randomly Featured Patents
Direct memory access control device for a ring buffer
Remote controller for TV receiver
Optical reproduction apparatus
Cotton fiber tissue-specific genes
Jet pump
Thin film transistor having a branched gate and channel
Multi-array pencil-sized ultrasound transducer and method of imaging and manufacture
Full strut turkey plaque
Wheel mechanism for ski-equipped vehicles
Ballistic projectile-arrester, having a regeneration and/or recovery system for the impact material