rename samples to samplelib

samplelib/SampleGeneratorImageTemporal.py

@@ -0,0 +1,77 @@
+import traceback
+import numpy as np
+import cv2
+
+from utils import iter_utils
+
+from samplelib import SampleType, SampleProcessor, SampleLoader, SampleGeneratorBase
+
+'''
+output_sample_types = [
+                        [SampleProcessor.TypeFlags, size, (optional)random_sub_size] ,
+                        ...
+                      ]
+'''
+class SampleGeneratorImageTemporal(SampleGeneratorBase):
+    def __init__ (self, samples_path, debug, batch_size, temporal_image_count, sample_process_options=SampleProcessor.Options(), output_sample_types=[], **kwargs):
+        super().__init__(samples_path, debug, batch_size)
+
+        self.temporal_image_count = temporal_image_count
+        self.sample_process_options = sample_process_options
+        self.output_sample_types = output_sample_types
+
+        self.samples = SampleLoader.load (SampleType.IMAGE, self.samples_path)
+
+        self.generator_samples = [ self.samples ]
+        self.generators = [iter_utils.ThisThreadGenerator ( self.batch_func, 0 )] if self.debug else \
+                          [iter_utils.SubprocessGenerator ( self.batch_func, 0 )]
+
+        self.generator_counter = -1
+
+    def __iter__(self):
+        return self
+
+    def __next__(self):
+        self.generator_counter += 1
+        generator = self.generators[self.generator_counter % len(self.generators) ]
+        return next(generator)
+
+    def batch_func(self, generator_id):
+        samples = self.generator_samples[generator_id]
+        samples_len = len(samples)
+        if samples_len == 0:
+            raise ValueError('No training data provided.')
+
+        if samples_len - self.temporal_image_count < 0:
+            raise ValueError('Not enough samples to fit temporal line.')
+
+        shuffle_idxs = []
+        samples_sub_len = samples_len - self.temporal_image_count + 1
+
+        while True:
+
+            batches = None
+            for n_batch in range(self.batch_size):
+
+                if len(shuffle_idxs) == 0:
+                    shuffle_idxs = [ *range(samples_sub_len) ]
+                    np.random.shuffle (shuffle_idxs)
+
+                idx = shuffle_idxs.pop()
+
+                temporal_samples = []
+
+                for i in range( self.temporal_image_count ):
+                    sample = samples[ idx+i ]
+                    try:
+                        temporal_samples += SampleProcessor.process (sample, self.sample_process_options, self.output_sample_types, self.debug)
+                    except:
+                        raise Exception ("Exception occured in sample %s. Error: %s" % (sample.filename, traceback.format_exc() ) )
+
+                if batches is None:
+                    batches = [ [] for _ in range(len(temporal_samples)) ]
+
+                for i in range(len(temporal_samples)):
+                    batches[i].append ( temporal_samples[i] )
+
+            yield [ np.array(batch) for batch in batches]