Sascha Haeberling | 8bddf8c | 2013-08-14 11:20:34 -0700 | [diff] [blame] | 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 | } |