add face recognition

This commit is contained in:
2025-01-22 10:36:28 +08:00
parent eab806fb9b
commit c6af9a0461
47 changed files with 3621 additions and 454 deletions

View File

@@ -1,65 +0,0 @@
package utils
import (
"crypto"
"encoding/hex"
"fmt"
"hash"
"io"
"os"
)
// SupportedHashFuncs 定义支持的哈希函数类型
var SupportedHashFuncs = map[string]func() hash.Hash{
"md5": crypto.MD5.New,
"sha1": crypto.SHA1.New,
"sha256": crypto.SHA256.New,
"sha512": crypto.SHA512.New,
}
// CalculateFileHash 根据指定的哈希算法计算文件的哈希值
func CalculateFileHash(filePath string, algorithm string) (string, error) {
// 获取对应的哈希函数
hashFunc, exists := SupportedHashFuncs[algorithm]
if !exists {
return "", fmt.Errorf("unsupported hash algorithm: %s", algorithm)
}
// 打开文件
file, err := os.Open(filePath)
if err != nil {
return "", fmt.Errorf("failed to open file: %w", err)
}
defer file.Close()
// 创建哈希对象
h := hashFunc()
// 计算哈希值
if _, err := io.Copy(h, file); err != nil {
return "", fmt.Errorf("failed to calculate hash: %w", err)
}
// 返回哈希值的十六进制字符串
return hex.EncodeToString(h.Sum(nil)), nil
}
// CalculateStreamHash 计算输入流的哈希值
func CalculateStreamHash(reader io.Reader, algorithm string) (string, error) {
// 获取对应的哈希函数
hashFunc, exists := SupportedHashFuncs[algorithm]
if !exists {
return "", fmt.Errorf("unsupported hash algorithm: %s", algorithm)
}
// 创建哈希对象
h := hashFunc()
// 从输入流计算哈希值
if _, err := io.Copy(h, reader); err != nil {
return "", fmt.Errorf("failed to calculate hash: %w", err)
}
// 返回哈希值的十六进制字符串
return hex.EncodeToString(h.Sum(nil)), nil
}

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@@ -0,0 +1,24 @@
package utils
import (
"github.com/corona10/goimagehash"
"image"
)
// CalculatePerceptualHash 计算感知哈希
func CalculatePerceptualHash(img image.Image) (string, error) {
hash, err := goimagehash.PerceptionHash(img)
if err != nil {
return "", err
}
return hash.ToString(), nil
}
// CalculateHash 计算平均哈希
func CalculateHash(img image.Image) (uint64, error) {
hash, err := goimagehash.AverageHash(img)
if err != nil {
return 0, err
}
return hash.GetHash(), nil
}

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@@ -1,8 +1,13 @@
package utils
import (
"bytes"
"encoding/base64"
"errors"
"fmt"
"image"
_ "image/jpeg" // 引入 jpeg 解码器
_ "image/png" // 引入 png 解码器
"io"
"regexp"
"strings"
@@ -88,3 +93,25 @@ func Base64ToBytes(base64Str string) ([]byte, error) {
}
return data, nil
}
// Base64ToImage 将 Base64 字符串转换为 image.Image 格式
func Base64ToImage(base64Str string) (image.Image, error) {
// 使用正则表达式去除前缀
re := regexp.MustCompile(`^data:image/([a-zA-Z]*);base64,`)
// 去除前缀部分
base64Str = re.ReplaceAllString(base64Str, "")
// 解码 Base64 字符串
data, err := base64.StdEncoding.DecodeString(base64Str)
if err != nil {
return nil, fmt.Errorf("failed to decode base64 string: %v", err)
}
// 使用 image.Decode 解码字节数据
img, _, err := image.Decode(bytes.NewReader(data))
if err != nil {
return nil, fmt.Errorf("failed to decode image: %v", err)
}
return img, nil
}