//
// Created by Scheaven on 2020/9/3.
//
#include "feature_util.h"

double feature_distance(FEATURE feat1, FEATURE feat2)
{
    double FeatA=0.0, FeatB=0.0, score=0.0;
    for (int i = 0; i < 128; i++)
    {
        FeatA += double(feat1[i])*double(feat1[i]);
        FeatB += double(feat2[i])*double(feat2[i]);
        score += double(feat1[i])*double(feat2[i]);
    }



    FeatA = sqrt(FeatA);
    FeatB = sqrt(FeatB);

    score = score / (FeatA * FeatB);

    if (score < 0) {
        score = 0;
    }
    printf("--评分---%f--",score);
    return score;
}