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
Resuming piecewise calibration of a real-time-clock unit after a measured offset that begins at the next calibration period
Electrode for a plasma torch
Broadband optical network apparatus and method
Encoding and/or decoding memory devices and methods thereof
Door-activated entry light fixture
Platform for generating electricity from flowing fluid using generally prolate turbine
Inflatable workshop
  Randomly Featured Patents
Transport path for paper products with speed reduction, particularly for printing machinery in combination with folding apparatus
Apparatus and method for simultaneously germicidally cleansing both air and water
Methods and assemblies for collecting liquid by centrifugation
Cutter with angular blades and method for cutting rope therewith
Lid for a bottle
Vehicle roof hatch frame
Apparatus for measuring distances by measuring time of travel of a measuring light pulse
Method of processing converted mode seismic data
Vehicle information processing device, vehicle, and vehicle information processing method
Phenol modified mannich reaction products from oxidized polymers