func doSampling() {
img, imgType, err := goImageBrightness.ImageFromFile("sampleImageAllWhite.png")
if err != nil {
log.Fatalf("Failed to decode [%s] image.", imgType)
}
brightnessPercentage := goImageBrightness.AnalyseImage(img)
log.Printf("Total relative luminance is %d%%.", brightnessPercentage)
img, imgType, err = goImageBrightness.ImageFromFile("sampleImageMostlyBrightGreen.png")
if err != nil {
log.Fatalf("Failed to decode [%s] image.", imgType)
}
brightnessPercentage = goImageBrightness.AnalyseImage(img)
log.Printf("Total relative luminance is %d%%.", brightnessPercentage)
img, imgType, err = goImageBrightness.ImageFromFile("sampleImageSlightlyBrightGreen.png")
if err != nil {
log.Fatalf("Failed to decode [%s] image.", imgType)
}
brightnessPercentage = goImageBrightness.AnalyseImage(img)
log.Printf("Total relative luminance is %d%%.", brightnessPercentage)
img, imgType, err = goImageBrightness.ImageFromFile("sampleImageAllBlack.png")
if err != nil {
log.Fatalf("Failed to decode [%s] image.", imgType)
}
brightnessPercentage = goImageBrightness.AnalyseImage(img)
log.Printf("Total relative luminance is %d%%.", brightnessPercentage)
}
func doLargeThreaded(pngPath *string) {
start := time.Now()
img, imgType, err := goImageBrightness.ImageFromFile(*pngPath)
if err != nil {
log.Fatalf("Failed to decode [%s] image.", imgType)
}
brightnessPercentage := goImageBrightness.ParallelAnalyseImage(img, 4)
log.Printf("Threaded total relative luminance is %d%%. (%d ms)", brightnessPercentage, time.Since(start)/1000000)
}