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#ifndef IMG_INFO_H_
#define IMG_INFO_H_
// functions that extrapolate information from read-only images
namespace img {
template<int Channels,typename ScalarType, bool Safe>
inline ScalarType minValue(const Image<Channels,ScalarType,Safe> &image)
{
assert(image.isValid());
if(Safe){
if(!image.isValid()) throw ImageException("Invalid image");
}
ScalarType* array = image.dataValues();
int length =image.dataValuesSize();
ScalarType min = array[0];
for(int offset=0;offset<length;offset++)
if(min > array[offset])
min = array[offset];
return min;
}
template<int Channels,typename ScalarType, bool Safe>
inline ScalarType maxValue(const Image<Channels,ScalarType,Safe> &image)
{
assert(image.isValid());
if(Safe){
if(!image.isValid()) throw ImageException("Invalid image");
}
ScalarType* array = image.dataValues();
int length =image.dataValuesSize();
ScalarType max = array[0];
for(int offset=0;offset<length;offset++)
if(max < array[offset])
max = array[offset];
return max;
}
} //end namespace img
#endif /*IMG_INFO_H_*/
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