1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 /* $Id: db_utilities_camera.cpp,v 1.3 2011/06/17 14:03:31 mbansal Exp $ */ 18 19 #include "db_utilities_camera.h" 20 #include "db_utilities.h" 21 #include <assert.h> 22 23 24 25 /***************************************************************** 26 * Lean and mean begins here * 27 *****************************************************************/ 28 29 void db_Approx3DCalMat(double K[9],double Kinv[9],int im_width,int im_height,double f_correction,int field) 30 { 31 double iw,ih,av_size,field_fact; 32 33 if(field) field_fact=2.0; 34 else field_fact=1.0; 35 36 iw=(double)im_width; 37 ih=(double)(im_height*field_fact); 38 av_size=(iw+ih)/2.0; 39 K[0]=f_correction*av_size; 40 K[1]=0; 41 K[2]=iw/2.0; 42 K[3]=0; 43 K[4]=f_correction*av_size/field_fact; 44 K[5]=ih/2.0/field_fact; 45 K[6]=0; 46 K[7]=0; 47 K[8]=1; 48 49 db_InvertCalibrationMatrix(Kinv,K); 50 } 51
