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main.go
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main.go
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package main
import (
"fmt"
"image"
"log"
"math"
"os"
"path/filepath"
_ "golang.org/x/image/bmp"
)
// MDID dataset (https://www.sz.tsinghua.edu.cn/labs/vipl/mdid.html) image similarity metrics, rewritten to go (golang)
// Loads MDID dataset from directory, performs metrics and writes output.
func main() {
log.SetFlags(0)
log.SetPrefix("log: ")
datasetDir := "dataset/MDID"
// Load dataset from diretory.
dataset, err := LoadMDID(datasetDir)
if err != nil {
log.Fatalf("Loading MDID dataset from \"%s\" error: %v\n", datasetDir, err)
}
// Print provided dataset evaluations.
//fmt.Printf("%v\n", dataset)
evaluators := map[string]func([]float64, []float64) float64{
"SROCC": SROCC,
"SROCCos": SROCConlinestats,
"SROCCgs": SROCCgostats,
"KROCC": KROCC,
"KROCCgn": KROCCgonum,
"KROCCgs": KROCCgostats,
"PLCC": PLCC,
"PLCCgn": PLCCgonum,
"PLCCgs": PLCCgostats,
"RMSE": RMSE,
}
evaluatorsList := []string{"SROCC", "KROCC", "PLCC", "RMSE"}
providedMetricsList := []string{"PSNR", "SSIM", "VIF", "IWSSIM", "FSIMc", "GMSD"}
fmt.Println("Comparing MDID MOS to provided metrics (pm) rankings using different evaluators (ev):")
fmt.Println()
fmt.Printf("%10s", "pm\\ev")
for _, em := range evaluatorsList {
fmt.Printf("%10s", em)
}
fmt.Println()
mos := dataset.ProvidedMetricsByName("mos")
for _, pm := range providedMetricsList {
fmt.Printf("%10s", pm)
m := dataset.ProvidedMetricsByName(pm)
for _, em := range evaluatorsList {
fmt.Printf("%10f", math.Abs(evaluators[em](mos, m)))
}
fmt.Println()
}
// Compute metrics.
imageFromPath := func(filepath string) (image.Image, error) {
f, err := os.Open(filepath)
if err != nil {
return nil, err
}
defer f.Close()
img, _, err := image.Decode(f)
if err != nil {
return nil, err
}
return img, nil
}
metrics := map[string]func(image.Image, image.Image) float64{
"MSEg": MSE,
"PSNRg": PSNR,
"MSE": MSErgb,
"PSNR": PSNRrgb,
"SSIM": SSIM,
}
fmt.Println()
computeMetricsList := []string{"PSNRg", "PSNR", "SSIM"}
for _, ref := range dataset {
refImg, err := imageFromPath(ref.Path)
if err != nil {
log.Printf("Could not load image: %v", err)
continue
}
for _, dis := range ref.Distorted {
disImg, err := imageFromPath(dis.Path)
if err != nil {
log.Printf("Could not load image: %v", err)
continue
}
for _, m := range computeMetricsList {
dis.ComputedMetrics[m] = metrics[m](refImg, disImg)
fmt.Printf("\rReference: %10s, Distorted: %10s, Metrics: %6s", filepath.Base(ref.Path), filepath.Base(dis.Path), m)
}
}
}
fmt.Printf("\rMetrics computed: %v%30s\n", computeMetricsList, "")
// Print computed dataset evaluations.
fmt.Println()
fmt.Println("Comparing MDID MOS to computed metrics (cm) rankings using different evaluators (ev):")
fmt.Println()
fmt.Printf("%10s", "cm\\ev")
for _, em := range evaluatorsList {
fmt.Printf("%10s", em)
}
fmt.Println()
for _, cm := range computeMetricsList {
fmt.Printf("%10s", cm)
m := dataset.ComputedMetricsByName(cm)
for _, em := range evaluatorsList {
fmt.Printf("%10f", math.Abs(evaluators[em](mos, m)))
}
fmt.Println()
}
fmt.Println()
fmt.Println("Comparing provided metrics to computed metrics (m) using different evaluators (ev):")
fmt.Println()
fmt.Printf("%10s", "m\\ev")
for _, em := range evaluatorsList {
fmt.Printf("%10s", em)
}
fmt.Println()
for _, m := range []string{"PSNR", "SSIM"} {
fmt.Printf("%10s", m)
pm, cm := dataset.ProvidedMetricsByName(m), dataset.ComputedMetricsByName(m)
for _, em := range evaluatorsList {
fmt.Printf("%10f", math.Abs(evaluators[em](pm, cm)))
}
fmt.Println()
//fmt.Println(pm)
//fmt.Println(cm)
}
}