参考链接:https://github.com/argman/EAST (项目来源)

https://github.com/opencv/opencv/issues/12491  (遇到的问题)

      https://www.pyimagesearch.com/2018/08/20/opencv-text-detection-east-text-detector/   (opencv加载)

文字检测有很多比较好的现成的模型比如yolov3,pesnet,pennet,east。不一一赘述,讲一下自己跑通east的过程。

https://github.com/argman/EAST链接中下载项目,windows下,各种包的版本要正确否则会出一些乱七八糟的错误。

运行EAST/eval.py。没有什么特别的问题要说,我在cpu下单张640*480的图能够达到每张0.4秒左右,还是非常优秀的。中英文数字都可。

但是源代码是ckpt,非常大,转成pb会稍微小点。添加:

##生成pb模型,但需要修改model.py
output_graph_def = tf.graph_util.convert_variables_to_constants(self.sess, # The session is used to retrieve the weights
tf.get_default_graph().as_graph_def(), # The graph_def is used to retrieve the nodes
["feature_fusion/Conv_7/Sigmoid", "feature_fusion/concat_3"]
)
output_graph='D:\\work\\video\\hand_tracking_no_op\\hand_tracking\\EAST\\east_icdar2015_resnet_v1_50_rbox\\out.pb'
with tf.gfile.GFile(output_graph, "wb") as f:
f.write(output_graph_def.SerializeToString())
print("%d ops in the final graph." % len(output_graph_def.node)) 位置在eval.py中的 saver.restore(self.sess, model_path)后面。注意如果你想要opencv加载pb还要修改model.py中的内容,这个在后面一篇文章中会讲到。
生成后用tf加载,方法跟加载ckpt相似:
import os
os.environ['CUDA_VISIBLE_DEVICES'] = FLAGS.gpu_list try:
os.makedirs(FLAGS.output_dir)
except OSError as e:
if e.errno != 17:
raise print("load_graph")
graph = load_graph(FLAGS.checkpoint_path) input_images = graph.get_tensor_by_name(
'import/input_images:0') f_score = graph.get_tensor_by_name('import/feature_fusion/Conv_7/Sigmoid:0')
f_geometry = graph.get_tensor_by_name(
'import/feature_fusion/concat_3:0') with tf.Session(graph=graph) as sess: im_fn_list = get_images()
for im_fn in im_fn_list:
im = cv2.imread(im_fn)[:, :, ::-1]
start_time = time.time()
im_resized, (ratio_h, ratio_w) = resize_image(im) timer = {'net': 0, 'restore': 0, 'nms': 0}
start = time.time() #file_writer = tf.summary.FileWriter('tmp/log', sess.graph) score, geometry = sess.run([f_score, f_geometry], feed_dict={
input_images: [im_resized]})
timer['net'] = time.time() - start boxes, timer = detect(score_map=score, geo_map=geometry, timer=timer)
print('{} : net {:.0f}ms, restore {:.0f}ms, nms {:.0f}ms'.format(
im_fn, timer['net']*1000, timer['restore']*1000, timer['nms']*1000)) if boxes is not None:
boxes = boxes[:, :8].reshape((-1, 4, 2))
boxes[:, :, 0] /= ratio_w
boxes[:, :, 1] /= ratio_h duration = time.time() - start_time
print('[timing] {}'.format(duration)) # save to file
if boxes is not None:
res_file = os.path.join(
FLAGS.output_dir,
'{}.txt'.format(
os.path.basename(im_fn).split('.')[0])) with open(res_file, 'w') as f:
for box in boxes:
# to avoid submitting errors
box = sort_poly(box.astype(np.int32))
if np.linalg.norm(box[0] - box[1]) < 5 or np.linalg.norm(box[3]-box[0]) < 5:
continue
f.write('{},{},{},{},{},{},{},{}\r\n'.format(
box[0, 0], box[0, 1], box[1, 0], box[1, 1], box[2, 0], box[2, 1], box[3, 0], box[3, 1],
))
cv2.polylines(im[:, :, ::-1], [box.astype(np.int32).reshape((-1, 1, 2))], True, color=(255, 255, 0), thickness=1)
if not FLAGS.no_write_images:
img_path = os.path.join(FLAGS.output_dir, os.path.basename(im_fn))
cv2.imwrite(img_path, im[:, :, ::-1]) 以上就是EAST的ckpt转pb用tf加载啦。
下一篇讲opencv加载east的pb。

05-11 19:38