Index: trunk/psLib/src/imageops/psImageConvolve.h
===================================================================
--- trunk/psLib/src/imageops/psImageConvolve.h	(revision 35767)
+++ trunk/psLib/src/imageops/psImageConvolve.h	(revision 36375)
@@ -26,5 +26,5 @@
 #define PS_TYPE_KERNEL_NAME "psF32"    ///< the data type for kernel as a string */
 
-/// a structure to contain data related to image smoothing with a 1D gauss kernel
+/// a structure to contain data related to image smoothing with a pre-cached 1D gauss kernel
 typedef struct {
     int Nx;
@@ -34,5 +34,12 @@
     psF32 *resultY;
     psVector *kernel;
-} psImageSmooth_PreAlloc_Data;
+} psImageSmoothCacheData;
+
+/// a structure to contain data related to image smoothing with a pre-cached 1D gauss kernel
+typedef struct {
+    float Nsigma;
+    int Ns;				// number of pixel radii
+    float *radflux;			// conv kernel in special positions
+} psImageSmooth2dCacheData;
 
 /// A convolution kernel
@@ -306,6 +313,7 @@
 );
 
-psImageSmooth_PreAlloc_Data *psImageSmooth_PreAlloc_DataAlloc (psImage *image, double sigma, double Nsigma);
-bool psImageSmooth_PreAlloc_F32(psImage *image, psImageSmooth_PreAlloc_Data *smdata);
+psImageSmoothCacheData *psImageSmoothCacheAlloc (psImage *image, double sigma, double Nsigma);
+bool psImageSmoothCache_F32(psImage *image, psImageSmoothCacheData *smdata);
+bool psImageSmoothCacheKernel_Gauss (psImageSmoothCacheData *smdata, float sigma);
 
 /// Control threading for image convolution functions
@@ -318,4 +326,9 @@
 bool psImageConvolveGetThreads(void);
 
+psImageSmooth2dCacheData *psImageSmooth2dCacheAlloc (float Nsigma);
+bool psImageSmooth2dCacheKernel_PS1_V1 (psImageSmooth2dCacheData *smdata, float sigma, float kappa);
+bool psImageSmooth2dCacheKernel_Gauss (psImageSmooth2dCacheData *smdata, float sigma);
+bool psImageSmooth2dCache_F32(psImage *image, psImageSmooth2dCacheData *smdata);
+
 /// @}
 #endif // #ifndef PS_IMAGE_CONVOLVE_H