| /* |
| * 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); |
| } |