Changeset 26769 for branches/eam_branches/20091201/psModules/src/imcombine/pmSubtraction.c

Timestamp:

Feb 4, 2010, 3:18:46 PM (16 years ago)

Author:

Paul Price

Message:

Using psKernelTruncate to reduce size of the kernel before calculating the covariance matrix.

File:

• branches/eam_branches/20091201/psModules/src/imcombine/pmSubtraction.c (modified) (4 diffs)

branches/eam_branches/20091201/psModules/src/imcombine/pmSubtraction.c

@@ -1153 +1153 @@
 bool pmSubtractionConvolve(pmReadout *out1, pmReadout *out2, const pmReadout *ro1, const pmReadout *ro2,
                            psImage *subMask, int stride, psImageMaskType maskBad, psImageMaskType maskPoor,
-                           float poorFrac, float kernelError, const psRegion *region,
+                           float poorFrac, float kernelError, float covarFrac, const psRegion *region,
                            const pmSubtractionKernels *kernels, bool doBG, bool useFFT)
 {
@@ -1195 +1195 @@
     PS_ASSERT_FLOAT_LARGER_THAN_OR_EQUAL(kernelError, 0.0, false);
     PS_ASSERT_FLOAT_LESS_THAN_OR_EQUAL(kernelError, 1.0, false);
+    PS_ASSERT_FLOAT_LARGER_THAN_OR_EQUAL(covarFrac, 0.0, false);
+    PS_ASSERT_FLOAT_LESS_THAN(covarFrac, 1.0, false);
     if (region && psRegionIsNaN(*region)) {
         psString string = psRegionToString(*region);
@@ -1327 +1329 @@
     if (kernels->mode == PM_SUBTRACTION_MODE_1 || kernels->mode == PM_SUBTRACTION_MODE_DUAL) {
         psKernel *kernel = pmSubtractionKernel(kernels, 0.0, 0.0, false); // Convolution kernel
+        psKernelTruncate(kernel, covarFrac);
         out1->covariance = psImageCovarianceCalculate(kernel, ro1->covariance);
         psFree(kernel);
@@ -1333 +1336 @@
         psKernel *kernel = pmSubtractionKernel(kernels, 0.0, 0.0,
                                                kernels->mode == PM_SUBTRACTION_MODE_DUAL); // Conv. kernel
+        psKernelTruncate(kernel, covarFrac);
         out2->covariance = psImageCovarianceCalculate(kernel, ro2->covariance);
         psFree(kernel);