我正在尝试在TensorFlow中进行数据增强。我已经写了此代码。
import numpy as np
import tensorflow as tf
import tensorflow.contrib.keras as keras
import time, random
def get_image_data_generator():
return keras.preprocessing.image.ImageDataGenerator(
rotation_range=get_random_rotation_angle(),
width_shift_range=get_random_wh_shift(),
height_shift_range=get_random_wh_shift(),
shear_range=get_random_shear(),
zoom_range=get_random_zoom(),
horizontal_flip=get_random_flip(),
vertical_flip=get_random_flip(),
preprocessing_function=get_random_function())
def augment_data(image_array,label_array):
print image_array.shape
images_array = image_array.copy()
labels_array = label_array.copy()
#Create a list of various datagenerators with different arguments
datagenerators = []
ndg = 10
#Creating 10 different generators
for ndata in xrange(ndg):
datagenerators.append(get_image_data_generator())
#Setting batch_size to be equal to no.of images
bsize = image_array.shape[0]
print bsize
#Obtaining the augmented data
for dgen in datagenerators:
dgen.fit(image_array)
(aug_img,aug_label) = dgen.flow(image_array,label_array,batch_size=bsize,shuffle=True)
print aug_img.shape
#Concatenating with the original data
images_array = np.concatenate([images_array,aug_img],axis=0)
labels_array = np.concatenate([labels_array,aug_label],axis=0)
return (images_array,labels_array)
当我使用
运行代码时 augment_data(image_array,label_array)
我有一个错误,说
Traceback (most recent call last):
File "cnn_model.py", line 40, in <module>
images_array,labels_array = augment_data(image_array,label_array)
File "/media/siladittya/d801fb13-809a-41b4-8f2e-d617ba103aba/ISI/code/2. known_object_detection/aug_data.py", line 47, in augment_data
(aug_img,aug_label) = dgen.flow(image_array,label_array,batch_size=10000,shuffle=True)
File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/keras/_impl/keras/preprocessing/image.py", line 1018, in next
return self._get_batches_of_transformed_samples(index_array)
File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/keras/_impl/keras/preprocessing/image.py", line 991, in _get_batches_of_transformed_samples
batch_x[i] = x
ValueError: setting an array element with a sequence.
edit ::我也会遇到此错误,即使我将单个图像作为参数传递。
我在这里做错了什么?我听不懂。请帮助。
edit ::即使我将单个图像作为参数传递给我也会遇到此错误。
您可以将单个元素作为数组传递并查看:
示例:
image_array, label_array = augment_data([image], [label])