#ifndef SPATIAL_INTERPOLATION_H
#define SPATIAL_INTERPOLATION_H
static inline void blend_color(const unsigned char a[3],const unsigned char b[3],unsigned weight,unsigned char out[3]){
 for(unsigned c=0;c<3;c++)out[c]=(unsigned char)(((unsigned)a[c]*(65535-weight)+(unsigned)b[c]*weight+32767)/65535);
}
#endif