def array_to_img(x, data_format=None, scale=True, dtype=None):
if data_format is None:
data_format = backend.image_data_format()
if 'dtype' in generic_utils.getargspec(image.array_to_img).args:
if dtype is None:
dtype = backend.floatx()
return image.array_to_img(x,
data_format=data_format,
scale=scale,
dtype=dtype)
return image.array_to_img(x, data_format=data_format, scale=scale)
def data_augumentation(imgs, img_type):
from image import array_to_img, img_to_array
import cv2
tmp = list()
for x in xrange(imgs.shape[0]):
img = imgs[x]
if img_type == 'clabel':
img = clabel_to_img(img, 128, 128)
tmp.append(array_to_img(img))
augmentated_list = rotate_img(tmp)
augmentated_list = flip_img(augmentated_list)
total = len(augmentated_list)
augmentated_imgs = np.zeros([total, 1, 128, 128], dtype='float32')
for x in xrange(total):
if img_type == 'clabel':
data_path = os.path.join('test/retrain/label/img' + str(x) +
'.png')
augmentated_list[x].save(data_path)
else:
data_path = os.path.join('test/retrain/raw/img' + str(x) + '.png')
augmentated_list[x].save(data_path)
augmentated_imgs[x] = img_to_array(augmentated_list[x]) / 255
if img_type == 'raw':
return augmentated_imgs
if img_type == 'clabel':
augmentated_clabels = categorize_label(augmentated_imgs)
return augmentated_clabels
def visualize_patches(data_path, output_path, img_type):
from image import combine_img, array_to_img
from predict import clabels_to_img
if img_type not in {'raw', 'label'}:
raise ValueError('Invalid img_type:', img_type)
data = np.load(data_path)
if img_type == 'label':
imgs = clabels_to_img(data, 512, 512)
else:
imgs = data
total = len(imgs)
tmp_list = list()
combined_imgs = np.zeros([total / 16, 1, imgs.shape[2], imgs.shape[3]])
for img_array in imgs:
img_array *= 255
img = array_to_img(img_array, scale=False)
tmp_list.append(img)
for x in xrange(total / 16):
combined_img = combine_img(tmp_list[16 * x:16 * (x + 1)])
data_path = os.path.join(output_path, 'img' + str(x) + '.png')
combined_img.save(data_path)
print 'save image:', x + 1, '/', total / 16
def visualize_ts(dir_path, imgs_test_name, imgs_true, imgs_pred):
from image import array_to_img
ts_path = 'ts/'
dir_path = os.path.join(dir_path, ts_path)
os.mkdir(dir_path)
print 'Calculate threat score...'
for x in xrange(imgs_test_name.shape[0]):
ts_img = np.zeros([3, imgs_true.shape[2], imgs_true.shape[3]], dtype='uint8')
ts_img[0] = imgs_true[x][0]
ts_img[1] = imgs_pred[x][0]
ts_img[2] = imgs_pred[x][0]
ts_img *= 255
ts = array_to_img(ts_img,scale=False)
ts.save(os.path.join(dir_path,imgs_test_name[x]))
def visualize(dir_path, imgs_test_name, imgs, visualize=True):
from image import combine_img, array_to_img, img_to_array
tmp_list = list()
for img_array in imgs:
img_array *= 255
img = array_to_img(img_array, scale=False)
tmp_list.append(img)
total = imgs_test_name.shape[0]
combined_imgs = np.zeros([total, 1, imgs.shape[2]*4, imgs.shape[3]*4], dtype = 'uint8')
for x in xrange(total):
combined_img = combine_img(tmp_list[16*x:16*(x+1)])
if visualize == True:
combined_img.save(os.path.join(dir_path, imgs_test_name[x]))
print 'save label image:', x+1, '/', total
combined_imgs[x] = img_to_array(combined_img) / 255
return combined_imgs
exampleDir = ''.join([args.outdir, 'examples/'])
if not os.path.exists(exampleDir):
os.makedirs(exampleDir)
np.random.seed(0)
if args.subset:
imPaths = np.random.choice(subset, 100)
else:
imPaths = np.random.choice(allPaths, 100)
ims = np.asarray([
getOneStatic(imPath, args.sampSize, args.newSize)
for imPath in imPaths
])
#ims = getBatch(101, allPaths, args.sampSize, args.newSize, args.threads)
for i in range(100):
image.array_to_img(ims[i] * 255.).save(''.join(
[exampleDir, str(i), 'A.png']))
image.array_to_img(cae.predict(ims[i:i + 1])[0] * 255.).save(
''.join([exampleDir, str(i), 'B.png']))
# Perform PCA on encodings
if args.subset:
subset = list(pd.read_csv(args.subset, header=None)[0])
subset_indices = [i for i, j in enumerate(allPaths) if j in subset]
repAll = repAll[subset_indices]
pca = PCA(n_components=args.K, whiten=True)
reduced = pca.fit_transform(repAll)
vari = pca.explained_variance_ratio_
# nDims = np.where(np.cumsum(vari) > .98)[0][0]
# reduced = reduced[:,:nDims]
nDims = reduced.shape[1]
# #############################
allPaths = image.list_pictures(imagePath)
repAll = np.zeros((len(allPaths), 1024))
for i in xrange(len(repAll)):
print(i)
for co in xrange(10):
repAll[i, :] += sum(encode.predict(getOne(100, allPaths[i])))
repAll[i, :] /= 1000.
# this shows the encoding and decoding for some random images
ims = getBatch(101, imagePath)
for i in xrange(100):
image.array_to_img(ims[i] * 255.).save(outputName + '/' + str(i) + 'A.png')
image.array_to_img(cae.predict(ims[i:i + 1])[0] *
255.).save(outputName + '/' + str(i) + 'B.png')
K = 1024
pca = PCA(n_components=K, whiten=True)
reduced = pca.fit_transform(repAll)
vari = pca.explained_variance_ratio_
# nDims = np.where(np.cumsum(vari) > .98)[0][0]
# reduced = reduced[:,:nDims]
nDims = reduced.shape[1]
with open(outputName + '_vari.txt', 'w') as fi:
for x in np.cumsum(vari):
fi.write(str(x) + '\n')