wehub-resource-sync
81 lines
2.5 KiB
Go
81 lines
2.5 KiB
Go
package localai
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import (
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"cmp"
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"net/http"
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"github.com/labstack/echo/v4"
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"github.com/mudler/LocalAI/core/backend"
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"github.com/mudler/LocalAI/core/config"
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"github.com/mudler/LocalAI/core/http/middleware"
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"github.com/mudler/LocalAI/core/schema"
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"github.com/mudler/LocalAI/core/services/facerecognition"
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"github.com/mudler/LocalAI/pkg/model"
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"github.com/mudler/xlog"
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)
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// defaultIdentifyThreshold is the cosine-distance cutoff applied when
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// the client does not specify one. Tuned for buffalo_l ArcFace R50;
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// other recognizers (e.g. SFace) should override it explicitly.
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const defaultIdentifyThreshold = float32(0.35)
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// FaceIdentifyEndpoint runs 1:N identification against the registered store.
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// @Summary Identify a face against the registered database (1:N recognition).
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// @Tags face-recognition
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// @Param request body schema.FaceIdentifyRequest true "query params"
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// @Success 200 {object} schema.FaceIdentifyResponse "Response"
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// @Router /v1/face/identify [post]
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func FaceIdentifyEndpoint(cl *config.ModelConfigLoader, ml *model.ModelLoader, appConfig *config.ApplicationConfig, registry facerecognition.Registry) echo.HandlerFunc {
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return func(c echo.Context) error {
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input, ok := c.Get(middleware.CONTEXT_LOCALS_KEY_LOCALAI_REQUEST).(*schema.FaceIdentifyRequest)
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if !ok || input.Model == "" {
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return echo.ErrBadRequest
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}
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cfg, ok := c.Get(middleware.CONTEXT_LOCALS_KEY_MODEL_CONFIG).(*config.ModelConfig)
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if !ok || cfg == nil {
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return echo.ErrBadRequest
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}
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img, err := decodeImageInput(input.Img)
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if err != nil {
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return err
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}
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topK := cmp.Or(input.TopK, 5)
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threshold := cmp.Or(input.Threshold, defaultIdentifyThreshold)
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xlog.Debug("FaceIdentify", "model", cfg.Name, "topK", topK, "threshold", threshold)
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probe, err := backend.FaceEmbed(c.Request().Context(), img, ml, appConfig, *cfg)
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if err != nil {
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return mapBackendError(err)
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}
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matches, err := registry.Identify(c.Request().Context(), probe, topK)
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if err != nil {
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return err
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}
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response := schema.FaceIdentifyResponse{
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Matches: make([]schema.FaceIdentifyMatch, len(matches)),
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}
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for i, m := range matches {
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confidence := (1 - m.Distance/threshold) * 100
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if confidence < 0 {
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confidence = 0
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}
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if confidence > 100 {
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confidence = 100
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}
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response.Matches[i] = schema.FaceIdentifyMatch{
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ID: m.ID,
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Name: m.Metadata.Name,
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Labels: m.Metadata.Labels,
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Distance: m.Distance,
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Confidence: confidence,
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Match: m.Distance <= threshold,
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}
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}
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return c.JSON(http.StatusOK, response)
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}
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}
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