HDR (High Dynamic Range) Imaging, and other mathematical brakthroughs
Above: Example image with welding.
Below: Mathematical algorithm:
is a brief biography on the inventor, Steve Mann; and also
Wikipedia has more info on
- Invention title: HDR (High Dynamic Range) Imaging and other mathematical breakthroughs.
Summary explanation -- how it works:
Most cameras have less dynamic range than the human eye, so photographs
often fail to capture everything you see in a picture.
HDR, invented by S. Mann, works by combining multiple exposures of the
same subject matter. The camera captures multiple pictures in rapid
a mathematical tranformation combines them into a true measurement of the
actual quantity of light in space.
Mann's invention is used in nearly every commercial camera,
including the Apple iPhone.
However, some recent improvements are yet to be commercialized.
These improvements allow for HDR video to be computationally efficient,
useful for example in live streaming applications.
Video frames are captured in rapid succession and the result computed,
efficiently, in real-time.
- Example commercial applications:
Image processing, image compression, image analysis,
computer vision, signal processing, etc..
Video conferencing, multimedia, video cameras, surveillance cameras,
welding helmets, etc..
- Link to technical papers associated with the invention:
COMPARAMETRIC IMAGE COMPOSITING: COMPUTATIONALLY EFFICIENT HIGH DYNAMIC RANGE IMAGING.
See also, Comparametric Equations with Practical Applications in Quantigraphic Image Processing.
A one-page overview is available
A popular-press article giving a general overview:
Quantigraphic camera promises HDR eyesight
from Father of AR.
- Patent applications filed or issued:
Althrough HDR has been in existence for more than 22
years, when Mann invented it in the 1990s,
there are some exciting new developments.
Various improvements to this work are ongoing, and a patent was recently
US 20120180180, Title:
Seeing aid or other sensory aid or interface for activities such as
electric arc welding, Filed: December 16, 2011 Published: July 19, 2012.
Collaborator: Ali; Mir Adnan; (London, CA).
Additional patent documents are in the works.
- Prototypes constructed:
A number of working prototypes have been constructed and are available
- Further notes:
Mir Adnan Ali, an expert on Comparametric Camera Response Functions,
should be brought in to collaborate on this project.
MannGlas welding helmet:
Return to a list of some of Steve Mann inventions