/
auprc.go
532 lines (461 loc) · 20.9 KB
/
auprc.go
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package auprc
import (
"bytes"
"fmt"
"io"
"math"
"os"
"path/filepath"
"sort"
"time"
"database/sql"
"github.com/aclements/go-moremath/stats"
"github.com/corona10/goimghdr"
_ "github.com/mattn/go-sqlite3" // Imports sqlite db drivers
"github.com/pa-m/sklearn/metrics"
"gonum.org/v1/gonum/mat"
"github.com/pastelnetwork/gonode/common/errors"
pruntime "github.com/pastelnetwork/gonode/common/runtime"
"github.com/pastelnetwork/gonode/dupe-detection/pkg/dupedetection"
"encoding/binary"
"encoding/hex"
"golang.org/x/crypto/sha3"
)
const (
cachedFingerprintsDB = "cachedFingerprints.sqlite"
)
func fingerprintFromCache(filePath string) ([]float64, error) {
if _, err := os.Stat(cachedFingerprintsDB); os.IsNotExist(err) {
return nil, errors.New(errors.Errorf("Cache database is not found."))
}
db, err := sql.Open("sqlite3", cachedFingerprintsDB)
if err != nil {
return nil, errors.New(err)
}
defer db.Close()
imageHash, err := getImageHashFromImageFilePath(filePath)
if err != nil {
return nil, errors.New(err)
}
selectQuery := `
SELECT path_to_art_image_file, model_1_image_fingerprint_vector, model_2_image_fingerprint_vector, model_3_image_fingerprint_vector, model_4_image_fingerprint_vector, model_5_image_fingerprint_vector,
model_6_image_fingerprint_vector, model_7_image_fingerprint_vector FROM image_hash_to_image_fingerprint_table where sha256_hash_of_art_image_file = ? ORDER BY datetime_fingerprint_added_to_database DESC
`
rows, err := db.Query(selectQuery, imageHash)
if err != nil {
return nil, errors.New(err)
}
defer rows.Close()
if rows.Next() {
var currentImageFilePath string
var model1ImageFingerprintVector, model2ImageFingerprintVector, model3ImageFingerprintVector, model4ImageFingerprintVector, model5ImageFingerprintVector, model6ImageFingerprintVector, model7ImageFingerprintVector []byte
err = rows.Scan(¤tImageFilePath, &model1ImageFingerprintVector, &model2ImageFingerprintVector, &model3ImageFingerprintVector, &model4ImageFingerprintVector, &model5ImageFingerprintVector, &model6ImageFingerprintVector, &model7ImageFingerprintVector)
if err != nil {
return nil, errors.New(err)
}
combinedImageFingerprintVector := append(append(append(append(append(append(fromBytes(model1ImageFingerprintVector), fromBytes(model2ImageFingerprintVector)[:]...), fromBytes(model3ImageFingerprintVector)[:]...), fromBytes(model4ImageFingerprintVector)[:]...), fromBytes(model5ImageFingerprintVector)[:]...), fromBytes(model6ImageFingerprintVector)[:]...), fromBytes(model7ImageFingerprintVector)[:]...)
return combinedImageFingerprintVector, nil
}
return nil, errors.New(errors.Errorf("Fingerprint is not found"))
}
func cacheFingerprint(fingerprints [][]float64, filePath string) error {
if _, err := os.Stat(cachedFingerprintsDB); os.IsNotExist(err) {
db, err := sql.Open("sqlite3", cachedFingerprintsDB)
if err != nil {
return errors.New(err)
}
defer db.Close()
dupeDetectionImageFingerprintDatabaseCreationQuery := `
CREATE TABLE image_hash_to_image_fingerprint_table (sha256_hash_of_art_image_file text, path_to_art_image_file, model_1_image_fingerprint_vector array, model_2_image_fingerprint_vector array, model_3_image_fingerprint_vector array,
model_4_image_fingerprint_vector array, model_5_image_fingerprint_vector array, model_6_image_fingerprint_vector array, model_7_image_fingerprint_vector array, datetime_fingerprint_added_to_database TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
PRIMARY KEY (sha256_hash_of_art_image_file));
`
_, err = db.Exec(dupeDetectionImageFingerprintDatabaseCreationQuery)
if err != nil {
return errors.New(err)
}
}
imageHash, err := getImageHashFromImageFilePath(filePath)
if err != nil {
return errors.New(err)
}
db, err := sql.Open("sqlite3", cachedFingerprintsDB)
if err != nil {
return errors.New(err)
}
defer db.Close()
dataInsertionQuery := `
INSERT OR REPLACE INTO image_hash_to_image_fingerprint_table (sha256_hash_of_art_image_file, path_to_art_image_file,
model_1_image_fingerprint_vector, model_2_image_fingerprint_vector, model_3_image_fingerprint_vector, model_4_image_fingerprint_vector,
model_5_image_fingerprint_vector, model_6_image_fingerprint_vector, model_7_image_fingerprint_vector) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?);
`
tx, err := db.Begin()
if err != nil {
return errors.New(err)
}
stmt, err := tx.Prepare(dataInsertionQuery)
if err != nil {
return errors.New(err)
}
defer stmt.Close()
_, err = stmt.Exec(imageHash, filePath, toBytes(fingerprints[0]), toBytes(fingerprints[1]), toBytes(fingerprints[2]), toBytes(fingerprints[3]), toBytes(fingerprints[4]), toBytes(fingerprints[5]), toBytes(fingerprints[6]))
if err != nil {
return errors.New(err)
}
tx.Commit()
return nil
}
var dupeDetectionImageFingerprintDatabaseFilePath string
func tryToFindLocalDatabaseFile() bool {
if _, err := os.Stat(dupeDetectionImageFingerprintDatabaseFilePath); os.IsNotExist(err) {
return false
}
return true
}
func regenerateEmptyDupeDetectionImageFingerprintDatabase() error {
defer pruntime.PrintExecutionTime(time.Now())
os.Remove(dupeDetectionImageFingerprintDatabaseFilePath)
db, err := sql.Open("sqlite3", dupeDetectionImageFingerprintDatabaseFilePath)
if err != nil {
return errors.New(err)
}
defer db.Close()
dupeDetectionImageFingerprintDatabaseCreationQuery := `
CREATE TABLE image_hash_to_image_fingerprint_table (sha256_hash_of_art_image_file text, path_to_art_image_file, model_1_image_fingerprint_vector array, model_2_image_fingerprint_vector array, model_3_image_fingerprint_vector array,
model_4_image_fingerprint_vector array, model_5_image_fingerprint_vector array, model_6_image_fingerprint_vector array, model_7_image_fingerprint_vector array, datetime_fingerprint_added_to_database TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
PRIMARY KEY (sha256_hash_of_art_image_file));
`
_, err = db.Exec(dupeDetectionImageFingerprintDatabaseCreationQuery)
if err != nil {
return errors.New(err)
}
return nil
}
func checkIfFilePathIsAValidImage(filePath string) error {
imageHeader, err := goimghdr.What(filePath)
if err != nil {
return err
}
if imageHeader == "gif" || imageHeader == "jpeg" || imageHeader == "png" || imageHeader == "bmp" {
return nil
}
return errors.New("Image header is not supported")
}
func getAllValidImageFilePathsInFolder(artFolderPath string, imageMaxCount int) ([]string, error) {
jpgMatches, err := filepath.Glob(filepath.Join(artFolderPath, "*.jpg"))
if err != nil {
return nil, errors.New(err)
}
jpegMatches, err := filepath.Glob(filepath.Join(artFolderPath, "*.jpeg"))
if err != nil {
return nil, errors.New(err)
}
pngMatches, err := filepath.Glob(filepath.Join(artFolderPath, "*.png"))
if err != nil {
return nil, errors.New(err)
}
bmpMatches, err := filepath.Glob(filepath.Join(artFolderPath, "*.bmp"))
if err != nil {
return nil, errors.New(err)
}
gifMatches, err := filepath.Glob(filepath.Join(artFolderPath, "*.gif"))
if err != nil {
return nil, errors.New(err)
}
allMatches := append(append(append(append(jpgMatches, jpegMatches...), pngMatches...), bmpMatches...), gifMatches...)
var results []string
for _, match := range allMatches {
if err = checkIfFilePathIsAValidImage(match); err == nil {
results = append(results, match)
}
}
if imageMaxCount != 0 && len(results) > imageMaxCount {
return results[:imageMaxCount], nil
}
return results, nil
}
func getImageHashFromImageFilePath(sampleImageFilePath string) (string, error) {
f, err := os.Open(sampleImageFilePath)
if err != nil {
return "", errors.New(err)
}
defer f.Close()
hash := sha3.New256()
if _, err := io.Copy(hash, f); err != nil {
return "", errors.New(err)
}
return hex.EncodeToString(hash.Sum(nil)), nil
}
func toBytes(data []float64) []byte {
output := new(bytes.Buffer)
_ = binary.Write(output, binary.LittleEndian, data)
return output.Bytes()
}
func fromBytes(data []byte) []float64 {
output := make([]float64, len(data)/8)
for i := range output {
bits := binary.LittleEndian.Uint64(data[i*8 : (i+1)*8])
output[i] = math.Float64frombits(bits)
}
return output
}
func addImageFingerprintsToDupeDetectionDatabase(imageFilePath string) error {
fingerprints, err := dupedetection.ComputeImageDeepLearningFeatures(imageFilePath)
if err != nil {
return errors.New(err)
}
imageHash, err := getImageHashFromImageFilePath(imageFilePath)
if err != nil {
return errors.New(err)
}
db, err := sql.Open("sqlite3", dupeDetectionImageFingerprintDatabaseFilePath)
if err != nil {
return errors.New(err)
}
defer db.Close()
dataInsertionQuery := `
INSERT OR REPLACE INTO image_hash_to_image_fingerprint_table (sha256_hash_of_art_image_file, path_to_art_image_file,
model_1_image_fingerprint_vector, model_2_image_fingerprint_vector, model_3_image_fingerprint_vector, model_4_image_fingerprint_vector,
model_5_image_fingerprint_vector, model_6_image_fingerprint_vector, model_7_image_fingerprint_vector) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?);
`
tx, err := db.Begin()
if err != nil {
return errors.New(err)
}
stmt, err := tx.Prepare(dataInsertionQuery)
if err != nil {
return errors.New(err)
}
defer stmt.Close()
_, err = stmt.Exec(imageHash, imageFilePath, toBytes(fingerprints[0]), toBytes(fingerprints[1]), toBytes(fingerprints[2]), toBytes(fingerprints[3]), toBytes(fingerprints[4]), toBytes(fingerprints[5]), toBytes(fingerprints[6]))
if err != nil {
return errors.New(err)
}
tx.Commit()
return nil
}
func addAllImagesInFolderToImageFingerprintDatabase(artFolderPath string) error {
validImageFilePaths, err := getAllValidImageFilePathsInFolder(artFolderPath, 0)
if err != nil {
return errors.New(err)
}
for _, currentImageFilePath := range validImageFilePaths {
fmt.Printf("\nNow adding image file %v to image fingerprint database.", currentImageFilePath)
err = addImageFingerprintsToDupeDetectionDatabase(currentImageFilePath)
if err != nil {
return errors.New(err)
}
}
return nil
}
func getListOfAllRegisteredImageFileHashes() ([]string, error) {
db, err := sql.Open("sqlite3", dupeDetectionImageFingerprintDatabaseFilePath)
if err != nil {
return nil, errors.New(err)
}
defer db.Close()
selectQuery := "SELECT sha256_hash_of_art_image_file FROM image_hash_to_image_fingerprint_table ORDER BY datetime_fingerprint_added_to_database DESC"
rows, err := db.Query(selectQuery)
if err != nil {
return nil, errors.New(err)
}
defer rows.Close()
var hashes []string
for rows.Next() {
var imageHash string
err = rows.Scan(&imageHash)
if err != nil {
return nil, errors.New(err)
}
hashes = append(hashes, imageHash)
}
return hashes, nil
}
func getAllImageFingerprintsFromDupeDetectionDatabaseAsArray() ([][]float64, *dupedetection.MemoizationImageData, error) {
defer pruntime.PrintExecutionTime(time.Now())
hashes, err := getListOfAllRegisteredImageFileHashes()
if err != nil {
return nil, nil, errors.New(err)
}
db, err := sql.Open("sqlite3", dupeDetectionImageFingerprintDatabaseFilePath)
if err != nil {
return nil, nil, errors.New(err)
}
defer db.Close()
var arrayOfCombinedImageFingerprintRows [][]float64
var memoizationImageData dupedetection.MemoizationImageData
for _, currentImageFileHash := range hashes {
selectQuery := `
SELECT sha256_hash_of_art_image_file, path_to_art_image_file, model_1_image_fingerprint_vector, model_2_image_fingerprint_vector, model_3_image_fingerprint_vector, model_4_image_fingerprint_vector, model_5_image_fingerprint_vector,
model_6_image_fingerprint_vector, model_7_image_fingerprint_vector FROM image_hash_to_image_fingerprint_table where sha256_hash_of_art_image_file = ? ORDER BY datetime_fingerprint_added_to_database DESC
`
rows, err := db.Query(selectQuery, currentImageFileHash)
if err != nil {
return nil, nil, errors.New(err)
}
defer rows.Close()
for rows.Next() {
var sha256HashOfArtImageFile string
var currentImageFilePath string
var model1ImageFingerprintVector, model2ImageFingerprintVector, model3ImageFingerprintVector, model4ImageFingerprintVector, model5ImageFingerprintVector, model6ImageFingerprintVector, model7ImageFingerprintVector []byte
err = rows.Scan(&sha256HashOfArtImageFile, ¤tImageFilePath, &model1ImageFingerprintVector, &model2ImageFingerprintVector, &model3ImageFingerprintVector, &model4ImageFingerprintVector, &model5ImageFingerprintVector, &model6ImageFingerprintVector, &model7ImageFingerprintVector)
if err != nil {
return nil, nil, errors.New(err)
}
combinedImageFingerprintVector := append(append(append(append(append(append(fromBytes(model1ImageFingerprintVector), fromBytes(model2ImageFingerprintVector)[:]...), fromBytes(model3ImageFingerprintVector)[:]...), fromBytes(model4ImageFingerprintVector)[:]...), fromBytes(model5ImageFingerprintVector)[:]...), fromBytes(model6ImageFingerprintVector)[:]...), fromBytes(model7ImageFingerprintVector)[:]...)
arrayOfCombinedImageFingerprintRows = append(arrayOfCombinedImageFingerprintRows, combinedImageFingerprintVector)
memoizationImageData.SHA256HashOfFetchedImages = append(memoizationImageData.SHA256HashOfFetchedImages, sha256HashOfArtImageFile)
}
}
return arrayOfCombinedImageFingerprintRows, &memoizationImageData, nil
}
func getImageDeepLearningFeaturesCombinedVectorForSingleImage(artImageFilePath string) ([]float64, error) {
defer pruntime.PrintExecutionTime(time.Now())
fingerprints, err := dupedetection.ComputeImageDeepLearningFeatures(artImageFilePath)
if err != nil {
return nil, errors.New(err)
}
var combinedImageFingerprintVector []float64
for _, fingerprint := range fingerprints {
combinedImageFingerprintVector = append(combinedImageFingerprintVector, fingerprint...)
}
cacheFingerprint(fingerprints, artImageFilePath)
return combinedImageFingerprintVector, err
}
func measureSimilarityOfCandidateImageToDatabase(imageFilePath string, finalCombinedImageFingerprintArray [][]float64, memoizationData dupedetection.MemoizationImageData, config dupedetection.ComputeConfig) (int, error) {
defer pruntime.PrintExecutionTime(time.Now())
fmt.Printf("\nChecking if candidate image is a likely duplicate of a previously registered artwork:")
numberOfPreviouslyRegisteredImagesToCompare := len(finalCombinedImageFingerprintArray)
lengthOfEachImageFingerprintVector := len(finalCombinedImageFingerprintArray[0])
fmt.Printf("\nComparing candidate image to the fingerprints of %v previously registered images. Each fingerprint consists of %v numbers.", numberOfPreviouslyRegisteredImagesToCompare, lengthOfEachImageFingerprintVector)
fmt.Printf("\nComputing image fingerprint of candidate image...")
candidateImageFingerprint, err := fingerprintFromCache(imageFilePath)
if err != nil {
candidateImageFingerprint, err = getImageDeepLearningFeaturesCombinedVectorForSingleImage(imageFilePath)
}
lengthOfCandidateImageFingerprint := len(candidateImageFingerprint)
fmt.Printf("\nCandidate image fingerpint consists from %v numbers", lengthOfCandidateImageFingerprint)
if err != nil {
return 0, errors.New(err)
}
imageHash, err := getImageHashFromImageFilePath(imageFilePath)
if err != nil {
return 0, errors.New(err)
}
memoizationData.SHA256HashOfCurrentImage = imageHash
return dupedetection.MeasureImageSimilarity(candidateImageFingerprint, finalCombinedImageFingerprintArray, memoizationData, config)
}
// MeasureResult contains AUPRC measure results
type MeasureResult struct {
AUPRC float64
DupeAccuracy float64
DupeCount float64
OriginalAccuracy float64
OriginalCount float64
AverageAccuracy float64
}
// MeasureAUPRC calculates AUPRC for a test corpus of the images
func MeasureAUPRC(config dupedetection.ComputeConfig) (MeasureResult, error) {
defer pruntime.PrintExecutionTime(time.Now())
miscMasternodeFilesFolderPath := filepath.Join(config.RootDir, "misc_masternode_files")
dupeDetectionImageFingerprintDatabaseFilePath = filepath.Join(config.RootDir, "dupe_detection_image_fingerprint_database.sqlite")
pathToAllRegisteredWorksForDupeDetection := filepath.Join(config.RootDir, "allRegisteredWorks")
dupeDetectionTestImagesBaseFolderPath := filepath.Join(config.RootDir, "dupes")
nonDupeTestImagesBaseFolderPath := filepath.Join(config.RootDir, "originals")
if _, err := os.Stat(miscMasternodeFilesFolderPath); os.IsNotExist(err) {
if err := os.MkdirAll(miscMasternodeFilesFolderPath, 0770); err != nil {
return MeasureResult{}, errors.New(err)
}
}
dbFound := tryToFindLocalDatabaseFile()
if !dbFound {
fmt.Printf("\nGenerating new image fingerprint database...")
regenerateEmptyDupeDetectionImageFingerprintDatabase()
err := addAllImagesInFolderToImageFingerprintDatabase(pathToAllRegisteredWorksForDupeDetection)
if err != nil {
return MeasureResult{}, errors.New(err)
}
} else {
fmt.Printf("\nFound existing image fingerprint database.")
}
fmt.Printf("\nRetrieving image fingerprints of previously registered images from local database...")
finalCombinedImageFingerprintArray, memoizationData, err := getAllImageFingerprintsFromDupeDetectionDatabaseAsArray()
if err != nil {
return MeasureResult{}, errors.New(err)
}
fmt.Printf("\n\nNow testing duplicate-detection scheme on known near-duplicate images:")
nearDuplicates, err := getAllValidImageFilePathsInFolder(dupeDetectionTestImagesBaseFolderPath, config.NumberOfImagesToValidate)
if err != nil {
if err != nil {
return MeasureResult{}, errors.New(err)
}
}
dupeCounter := 0
var predictedY []float64
for _, nearDupeFilePath := range nearDuplicates {
fmt.Printf("\n\n________________________________________________________________________________________________________________\n\n")
fmt.Printf("\nCurrent Near Duplicate Image: %v", nearDupeFilePath)
isLikelyDupe, err := measureSimilarityOfCandidateImageToDatabase(nearDupeFilePath, finalCombinedImageFingerprintArray, *memoizationData, config)
if err != nil {
return MeasureResult{}, errors.New(err)
}
dupeCounter += isLikelyDupe
predictedY = append(predictedY, float64(isLikelyDupe))
}
fmt.Printf("\n\n________________________________________________________________________________________________________________")
fmt.Printf("\n________________________________________________________________________________________________________________")
dupeAccuracy := float32(dupeCounter) / float32(len(nearDuplicates)) * 100.0
dupeCount := len(nearDuplicates)
fmt.Printf("\nAccuracy Percentage in Detecting Near-Duplicate Images: %.2f %% from totally %v images", dupeAccuracy, dupeCount)
fmt.Printf("\n\nNow testing duplicate-detection scheme on known non-duplicate images:")
nonDuplicates, err := getAllValidImageFilePathsInFolder(nonDupeTestImagesBaseFolderPath, config.NumberOfImagesToValidate)
if err != nil {
if err != nil {
return MeasureResult{}, errors.New(err)
}
}
nondupeCounter := 0
for _, nonDupeFilePath := range nonDuplicates {
fmt.Printf("\n\n________________________________________________________________________________________________________________\n\n")
fmt.Printf("\nCurrent Non-Duplicate Test Image: %v", nonDupeFilePath)
isLikelyDupe, err := measureSimilarityOfCandidateImageToDatabase(nonDupeFilePath, finalCombinedImageFingerprintArray, *memoizationData, config)
if err != nil {
return MeasureResult{}, errors.New(err)
}
if isLikelyDupe == 0 {
nondupeCounter++
predictedY = append(predictedY, 1.0)
} else {
predictedY = append(predictedY, 0.0)
}
}
fmt.Printf("\n\n________________________________________________________________________________________________________________")
fmt.Printf("\n________________________________________________________________________________________________________________")
nondupeAccuracy := float32(nondupeCounter) / float32(len(nonDuplicates)) * 100.0
nondupeCount := len(nonDuplicates)
fmt.Printf("\nAccuracy Percentage in Detecting Non-Duplicate Images: %.2f %% from totally %v images", nondupeAccuracy, nondupeCount)
fmt.Printf("\n\n\n_______________________________Summary:_______________________________\n\n")
fmt.Printf("\nAccuracy Percentage in Detecting Near-Duplicate Images: %.2f %% from totally %v images", dupeAccuracy, dupeCount)
fmt.Printf("\nAccuracy Percentage in Detecting Non-Duplicate Images: %.2f %% from totally %v images\n", nondupeAccuracy, nondupeCount)
if len(predictedY) == 0 {
return MeasureResult{}, nil
}
actualY := make([]float64, len(predictedY))
for i := range actualY {
actualY[i] = 1.0
}
Ytrue := mat.NewDense(len(predictedY), 1, predictedY)
Yscores := mat.NewDense(len(actualY), 1, actualY)
precision, recall, _ := metrics.PrecisionRecallCurve(Ytrue, Yscores, 1, nil)
sort.Float64s(recall)
auprcMetric := metrics.AUC(recall, precision)
fmt.Printf("\nAcross all near-duplicate and non-duplicate test images, precision is %v and the Area Under the Precision-Recall Curve (AUPRC) is %.3f\n", precision, auprcMetric)
return MeasureResult{
AUPRC: auprcMetric,
DupeAccuracy: float64(dupeAccuracy),
DupeCount: float64(dupeCount),
OriginalAccuracy: float64(nondupeAccuracy),
OriginalCount: float64(nondupeCount),
AverageAccuracy: stats.Mean([]float64{float64(dupeAccuracy), float64(nondupeAccuracy)}),
}, nil
}