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Add -maxscale parameter to limit the amount sample images can scale in background images

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This commit is contained in:
Bob Paulin
2016-04-20 21:53:52 -05:00
parent ec63343f34
commit b973b73ae7
3 changed files with 18 additions and 9 deletions
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12
apps/createsamples/utility.cpp
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@@ -38,7 +38,6 @@
// the use of this software, even if advised of the possibility of such damage.
//
//M*/
#include <cstring>
#include <ctime>
@@ -1308,7 +1307,7 @@ void cvCreateTestSamples( const char* infoname,
int invert, int maxintensitydev,
double maxxangle, double maxyangle, double maxzangle,
int showsamples,
int winwidth, int winheight )
int winwidth, int winheight, double maxscale )
{
CvSampleDistortionData data;
@@ -1337,7 +1336,6 @@ void cvCreateTestSamples( const char* infoname,
int i;
int x, y, width, height;
float scale;
float maxscale;
int inverse;
if( showsamples )
@@ -1366,12 +1364,16 @@ void cvCreateTestSamples( const char* infoname,
for( i = 0; i < count; i++ )
{
icvGetNextFromBackgroundData( cvbgdata, cvbgreader );
maxscale = MIN( 0.7F * cvbgreader->src.cols / winwidth,
if( maxscale < 0.0 )
{
maxscale = MIN( 0.7F * cvbgreader->src.cols / winwidth,
0.7F * cvbgreader->src.rows / winheight );
}
if( maxscale < 1.0F ) continue;
scale = (maxscale - 1.0F) * rand() / RAND_MAX + 1.0F;
width = (int) (scale * winwidth);
height = (int) (scale * winheight);
x = (int) ((0.1+0.8 * rand()/RAND_MAX) * (cvbgreader->src.cols - width));