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/*
* 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);
}
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