package face
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import (
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"fmt"
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"strconv"
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"unsafe"
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)
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func ByteSlice2float32Slice(src []byte) []float32 {
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if len(src) == 0 {
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return nil
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}
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l := len(src) / 4
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ptr := unsafe.Pointer(&src[0])
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return (*[1 << 26]float32)((*[1 << 26]float32)(ptr))[:l:l]
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}
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func DoSdkCompare(ci, co []float32) float32 {
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sec := DirectCompare(ci, co)
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//logger.Debug("比对得分为：", sec)
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sec = ParseScore(sec)
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return sec
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}
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func DirectCompare(feat1 []float32, feat2 []float32) float32 {
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if len(feat1) != len(feat2) {
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return 0
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}
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var score float32
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if len(feat1) != len(feat2) {
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return 0
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}
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l := len(feat1)
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if l == 0 {
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return 0
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}
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for i := 0; i < l; i++ {
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score += feat1[i] * feat2[i]
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}
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score += 0.05
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if score > 0.9999 {
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score = 0.9999
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}
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if score < 0.0001 {
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score = 0.0001
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}
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//fmt.Println("score:", score)
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return score
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}
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func ParseScore(compareScore float32) float32 {
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if compareScore <= 1 {
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compareScore = compareScore * 100
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}
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if compareScore == 100 {
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return 100
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}
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f, _ := strconv.ParseFloat(fmt.Sprintf("%2.2f", compareScore), 32)
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return float32(f)
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}
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