func findAmountOfPurpleInImage(imageFile *os.File) (int, error) {
img, _, err := image.Decode(imageFile)
if err != nil {
return -1, err
}
img = turnGreyIntoWhite(img)
//logImage(img);
dominantColor := dominantcolor.Find(img)
distanceToPurple := coloralgorithms.DistanceBetweenColors(dominantColor, purple)
// The distance should be as small as possible, but the rank should be as high as possible
rank := int(coloralgorithms.MAX_DISTANCE - distanceToPurple)
return rank, nil
}
func findAmountOfPurpleInImagee(imageFile *os.File) (int, error) {
image, error := fileToImage(imageFile)
if error != nil {
return 0, error
}
points := pixelsToPoints(image)
dominantColors, error := coloralgorithms.FindClusters(config, points)
if error != nil {
return 0, error
}
clusterQualities := coloralgorithms.CalculateClusterQuality(config, dominantColors)
index, _ := coloralgorithms.LaMaximum(clusterQualities, int(float64(len(points))*percentageOfPixelsPerCluster))
if index < 0 {
return -1, nil //errors.New("No cluster was large enough")
}
dominantColor := dominantColors[index]
distanceToPurple := coloralgorithms.DistanceBetweenColors(pointToColor(*dominantColor.Center), purple)
// The distance should be as small as possible, but the rank should be as high as possible
rank := int(coloralgorithms.MAX_DISTANCE - distanceToPurple)
return rank, nil
}