MATLAB File Help: cv.TonemapDrago Index
cv.TonemapDrago

Tonemapping algorithm used to map HDR image to 8-bit range

Adaptive logarithmic mapping is a fast global tonemapping algorithm that scales the image in logarithmic domain.

Since it's a global operator the same function is applied to all the pixels, it is controlled by the bias parameter.

Optional saturation enhancement is possible as described in [FL02].

For more information see [DM03].

References

[FL02]:

Raanan Fattal, Dani Lischinski, and Michael Werman. "Gradient domain high dynamic range compression". In ACM Transactions on Graphics (TOG), volume 21, pages 249-256. ACM, 2002.

[DM03]:

Frederic Drago, Karol Myszkowski, Thomas Annen, and Norishige Chiba. "Adaptive logarithmic mapping for displaying high contrast scenes". In Computer Graphics Forum, volume 22, pages 419-426. Wiley Online Library, 2003.

See also
cv.Tonemap, cv.TonemapDurand, cv.TonemapReinhard, cv.TonemapMantiuk, Tonemap
Class Details
Superclasses handle
Sealed false
Construct on load false
Constructor Summary
TonemapDrago Creates TonemapDrago object 
Property Summary
Bias value for bias function in [0, 1] range. 
Gamma positive value for gamma correction. 
Saturation positive saturation enhancement value. 
id Object ID 
Method Summary
  addlistener Add listener for event. 
  delete Destructor 
  eq == (EQ) Test handle equality. 
  findobj Find objects matching specified conditions. 
  findprop Find property of MATLAB handle object. 
  ge >= (GE) Greater than or equal relation for handles. 
  gt > (GT) Greater than relation for handles. 
Sealed   isvalid Test handle validity. 
  le <= (LE) Less than or equal relation for handles. 
  lt < (LT) Less than relation for handles. 
  ne ~= (NE) Not equal relation for handles. 
  notify Notify listeners of event. 
  process Tonemaps image