Changeset 26704 for branches/eam_branches/20091201/psLib/src/imageops/psImageCovariance.h

Timestamp:

Jan 28, 2010, 4:23:00 AM (16 years ago)

Author:

Paul Price

Message:

Add function for quicker calculation of covariance factor --- only need to calculate the central pixel.

File:

• branches/eam_branches/20091201/psLib/src/imageops/psImageCovariance.h (modified) (1 diff)

branches/eam_branches/20091201/psLib/src/imageops/psImageCovariance.h

@@ -47 +47 @@
     );
 
+/// Return the pixel-to-pixel covariance factor following calculation
+///
+/// This doesn't require calculation of the entire covariance matrix, so is much faster.
+float psImageCovarianceCalculateFactor(
+    const psKernel *kernel,             ///< Convolution kernel
+    const psKernel *covariance          ///< Current covariance pseudo-matrix
+    );
+
+
 /// Return the covariance factor for an aperture of a given radius
 float psImageCovarianceFactorForAperture(const psKernel *covar, float radius);