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