typedef DgUInt8 (

DgCorrelateFunction

) (

DgContext *context,
DgImage *image,
void *templateData,
DgInt32 x,
DgInt32 y,
DgInt32 *xoffset,
DgInt32 *yoffset

);

Summary

The signature for a correlation function. Used to compute a score when matching a template against a small region in an image that is around (x,y). The size of the region is decided by implementation.

Parameters

context		specify context
image		the target image
templateData		private template data
x		x coordinate of the placement
y		y coordinate of the placement
xoffset		x offset of where the best correlation is read
yoffset		y offset of where the best correlation is read

References

DgGlyphTemplate