82d61d1f93
Animated GIFs are transcoded to AVC because it is much smaller and thus also suitable for long/large animations. In addition, this commit adds support for more metadata fields such as frame rate, number of frames, file capture timestamp (unix milliseconds), media type, and software version. Support for SVG files can later be implemented in a similar way.
149 lines
3.6 KiB
Go
149 lines
3.6 KiB
Go
/*
|
|
|
|
Package face provides facial recognition.
|
|
|
|
Copyright (c) 2018 - 2022 PhotoPrism UG. All rights reserved.
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under Version 3 of the GNU Affero General Public License (the "AGPL"):
|
|
<https://docs.photoprism.app/license/agpl>
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU Affero General Public License for more details.
|
|
|
|
The AGPL is supplemented by our Trademark and Brand Guidelines,
|
|
which describe how our Brand Assets may be used:
|
|
<https://photoprism.app/trademark>
|
|
|
|
Feel free to send an email to hello@photoprism.app if you have questions,
|
|
want to support our work, or just want to say hello.
|
|
|
|
Additional information can be found in our Developer Guide:
|
|
<https://docs.photoprism.app/developer-guide/>
|
|
|
|
*/
|
|
package face
|
|
|
|
import (
|
|
"encoding/json"
|
|
|
|
"github.com/photoprism/photoprism/internal/crop"
|
|
"github.com/photoprism/photoprism/internal/event"
|
|
)
|
|
|
|
var log = event.Log
|
|
|
|
// Face represents a face detected.
|
|
type Face struct {
|
|
Rows int `json:"rows,omitempty"`
|
|
Cols int `json:"cols,omitempty"`
|
|
Score int `json:"score,omitempty"`
|
|
Area Area `json:"face,omitempty"`
|
|
Eyes Areas `json:"eyes,omitempty"`
|
|
Landmarks Areas `json:"landmarks,omitempty"`
|
|
Embeddings Embeddings `json:"embeddings,omitempty"`
|
|
}
|
|
|
|
// Size returns the absolute face size in pixels.
|
|
func (f *Face) Size() int {
|
|
return f.Area.Scale
|
|
}
|
|
|
|
// Dim returns the max number of rows and cols as float32 to calculate relative coordinates.
|
|
func (f *Face) Dim() float32 {
|
|
if f.Cols > 0 {
|
|
return float32(f.Cols)
|
|
}
|
|
|
|
return float32(1)
|
|
}
|
|
|
|
// CropArea returns the relative image area for cropping.
|
|
func (f *Face) CropArea() crop.Area {
|
|
if f.Rows < 1 {
|
|
f.Cols = 1
|
|
}
|
|
|
|
if f.Cols < 1 {
|
|
f.Cols = 1
|
|
}
|
|
|
|
x := float32(f.Area.Col-f.Area.Scale/2) / float32(f.Cols)
|
|
y := float32(f.Area.Row-f.Area.Scale/2) / float32(f.Rows)
|
|
|
|
return crop.NewArea(
|
|
f.Area.Name,
|
|
x,
|
|
y,
|
|
float32(f.Area.Scale)/float32(f.Cols),
|
|
float32(f.Area.Scale)/float32(f.Rows),
|
|
)
|
|
}
|
|
|
|
// EyesMidpoint returns the point in between the eyes.
|
|
func (f *Face) EyesMidpoint() Area {
|
|
if len(f.Eyes) != 2 {
|
|
return Area{
|
|
Name: "midpoint",
|
|
Row: f.Area.Row,
|
|
Col: f.Area.Col,
|
|
Scale: f.Area.Scale,
|
|
}
|
|
}
|
|
|
|
return Area{
|
|
Name: "midpoint",
|
|
Row: (f.Eyes[0].Row + f.Eyes[1].Row) / 2,
|
|
Col: (f.Eyes[0].Col + f.Eyes[1].Col) / 2,
|
|
Scale: (f.Eyes[0].Scale + f.Eyes[1].Scale) / 2,
|
|
}
|
|
}
|
|
|
|
// RelativeLandmarks returns relative face areas.
|
|
func (f *Face) RelativeLandmarks() crop.Areas {
|
|
p := f.EyesMidpoint()
|
|
|
|
m := f.Landmarks.Relative(p, float32(f.Rows), float32(f.Cols))
|
|
m = append(m, f.Eyes.Relative(p, float32(f.Rows), float32(f.Cols))...)
|
|
|
|
return m
|
|
}
|
|
|
|
// RelativeLandmarksJSON returns relative face areas as JSON.
|
|
func (f *Face) RelativeLandmarksJSON() (b []byte) {
|
|
var noResult = []byte("")
|
|
|
|
l := f.RelativeLandmarks()
|
|
|
|
if len(l) < 1 {
|
|
return noResult
|
|
}
|
|
|
|
if result, err := json.Marshal(l); err != nil {
|
|
log.Errorf("faces: %s", err)
|
|
return noResult
|
|
} else {
|
|
return result
|
|
}
|
|
}
|
|
|
|
// EmbeddingsJSON returns detected face embeddings as JSON array.
|
|
func (f *Face) EmbeddingsJSON() (b []byte) {
|
|
return f.Embeddings.JSON()
|
|
}
|
|
|
|
// HasEmbedding tests if the face has at least one embedding.
|
|
func (f *Face) HasEmbedding() bool {
|
|
return len(f.Embeddings) > 0
|
|
}
|
|
|
|
// NoEmbedding tests if the face has no embeddings.
|
|
func (f *Face) NoEmbedding() bool {
|
|
if f.Embeddings == nil {
|
|
return true
|
|
}
|
|
|
|
return f.Embeddings.Empty()
|
|
}
|