Changeset 2764 for trunk/stac/src/stac.h

Timestamp:

Dec 20, 2004, 6:15:28 PM (22 years ago)

Author:

Paul Price

Message:

Running faster now by only transforming rejection masks where we're interested. To do: only transform and combine in the second iteration for areas where we're interested

File:

• trunk/stac/src/stac.h (modified) (1 diff)

trunk/stac/src/stac.h

@@ -137 +137 @@
 // Transform the rejection masks back to the source frame
 psArray *stacRejection(psArray *inputs, // Input images
-                       psArray *transformed, // Transformed images
-                       psImage *combined, // Combined image
+                       psArray *rejected, // Rejected images
+                       psArray *regions, // Regions of interest
                        psArray *maps,   // Maps from input to transformed image
                        psArray *inverseMaps, // Maps from transformed to input image
-                       psArray *rejected, // Rejected images
                        stacConfig *config // Configuration
     );
 
+/************************************************************************************************************/
+
+// stacAreaOfInterest.c
+
+// Returns the change in x' and y' for a change in x and y of 1
+bool stacPlaneTransformDeriv(psPlane *out, // Output derivative, assumed already allocated
+                             psPlaneTransform *transform, // The transform for which to obtain the derivative
+                             psPlane *in // The position at which to obtain the derivative
+    );
+
+// Return a mask image designating the region of interest in the source frame
+// Basically, uses derivatives of the transformation to work out what pixels in the source might be of interest
+psImage *stacAreaOfInterest(psImage *mask, // Mask that is to be used to determine the area of interest
+                            psPlaneTransform *map, // Map from the mask to the area of interest
+                            int nxOut, int nyOut // Size of the area of interest
+    );
+
+/************************************************************************************************************/
 
 #endif