1 files changed, 50 insertions, 0 deletions
diff --git a/jni/feature_stab/db_vlvm/db_utilities_camera.cpp b/jni/feature_stab/db_vlvm/db_utilities_camera.cpp
new file mode 100644
index 000000000..dceba9b62
--- /dev/null
+++ b/jni/feature_stab/db_vlvm/db_utilities_camera.cpp
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* $Id: db_utilities_camera.cpp,v 1.3 2011/06/17 14:03:31 mbansal Exp $ */
+
+#include "db_utilities_camera.h"
+#include "db_utilities.h"
+#include <assert.h>
+
+
+
+/*****************************************************************
+*    Lean and mean begins here                                   *
+*****************************************************************/
+
+void db_Approx3DCalMat(double K[9],double Kinv[9],int im_width,int im_height,double f_correction,int field)
+{
+    double iw,ih,av_size,field_fact;
+
+    if(field) field_fact=2.0;
+    else field_fact=1.0;
+
+    iw=(double)im_width;
+    ih=(double)(im_height*field_fact);
+    av_size=(iw+ih)/2.0;
+    K[0]=f_correction*av_size;
+    K[1]=0;
+    K[2]=iw/2.0;
+    K[3]=0;
+    K[4]=f_correction*av_size/field_fact;
+    K[5]=ih/2.0/field_fact;
+    K[6]=0;
+    K[7]=0;
+    K[8]=1;
+
+    db_InvertCalibrationMatrix(Kinv,K);
+}