to be commented

inaFaceAnalyzer/face_extractor.py

@@ -0,0 +1,52 @@
+#!/usr/bin/env python
+# encoding: utf-8
+
+# The MIT License
+
+# Copyright (c) 2019-2023 Ina (David Doukhan - http://www.ina.fr/)
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+"""
+Module :mod:`inaFaceAnalyzer.face_extractor` contains functions allowing to
+extract detected faces to image directories and to apply face preprocessing
+methods on resulting images.
+"""
+
+from .face_detector import PrecomputedDetector
+from .face_preprocessing import preprocess_face
+from .opencv_utils import imwrite_rgb
+
+def face_extractor(df, stream, output_dir, oshape, bbox2square, bbox_scale, face_aligner, ext='png', verbose=False):
+ '''
+ Extract faces found in "stream"
+ '''
+ iframe, frame = next(stream)
+
+ detector = PrecomputedDetector(list(df.bbox))
+
+ for ituple, t in enumerate(df.itertuples()):
+ while iframe != t.frame:
+ iframe, frame = next(stream)
+ print(iframe, t.frame)
+ detection = detector(frame)
+ assert len(detection) == 1, len(detection)
+ detection = detection[0]
+ img, _ = preprocess_face(frame, detection, bbox2square, bbox_scale, face_aligner, oshape, False)
+ imwrite_rgb('%s/%08d.%s' % (output_dir, ituple, ext), img)