felixwang2

上代码:

import tensorflow as tf
import os
import numpy as np
import re
from PIL import Image
import matplotlib.pyplot as plt

class NodeLookup(object):
    def __init__(self):  
        label_lookup_path = \'inception_model/imagenet_2012_challenge_label_map_proto.pbtxt\'   
        uid_lookup_path = \'inception_model/imagenet_synset_to_human_label_map.txt\'
        self.node_lookup = self.load(label_lookup_path, uid_lookup_path)

    def load(self, label_lookup_path, uid_lookup_path):
        # 加载分类字符串n********对应分类名称的文件
        proto_as_ascii_lines = tf.gfile.GFile(uid_lookup_path).readlines()
        uid_to_human = {}
        #一行一行读取数据
        for line in proto_as_ascii_lines :
            #去掉换行符
            line=line.strip(\'\n\')
            #按照\'\t\'分割
            parsed_items = line.split(\'\t\')
            #获取分类编号
            uid = parsed_items[0]
            #获取分类名称
            human_string = parsed_items[1]
            #保存编号字符串n********与分类名称映射关系
            uid_to_human[uid] = human_string

        # 加载分类字符串n********对应分类编号1-1000的文件
        proto_as_ascii = tf.gfile.GFile(label_lookup_path).readlines()
        node_id_to_uid = {}
        for line in proto_as_ascii:
            if line.startswith(\'  target_class:\'):
                #获取分类编号1-1000
                target_class = int(line.split(\': \')[1])
            if line.startswith(\'  target_class_string:\'):
                #获取编号字符串n********
                target_class_string = line.split(\': \')[1]
                #保存分类编号1-1000与编号字符串n********映射关系
                node_id_to_uid[target_class] = target_class_string[1:-2]

        #建立分类编号1-1000对应分类名称的映射关系
        node_id_to_name = {}
        for key, val in node_id_to_uid.items():
            #获取分类名称
            name = uid_to_human[val]
            #建立分类编号1-1000到分类名称的映射关系
            node_id_to_name[key] = name
        return node_id_to_name

    #传入分类编号1-1000返回分类名称
    def id_to_string(self, node_id):
        if node_id not in self.node_lookup:
            return \'\'
        return self.node_lookup[node_id]


#创建一个图来存放google训练好的模型
with tf.gfile.FastGFile(\'inception_model/classify_image_graph_def.pb\', \'rb\') as f:
    graph_def = tf.GraphDef()
    graph_def.ParseFromString(f.read())
    tf.import_graph_def(graph_def, name=\'\')


with tf.Session() as sess:
    softmax_tensor = sess.graph.get_tensor_by_name(\'softmax:0\')
    #遍历目录,如果images下没有图片,则没有任何识别
    for root,dirs,files in os.walk(\'images/\'):
        for file in files:
            #载入图片
            image_data = tf.gfile.FastGFile(os.path.join(root,file), \'rb\').read()
            predictions = sess.run(softmax_tensor,{\'DecodeJpeg/contents:0\': image_data})#图片格式是jpg格式
            predictions = np.squeeze(predictions)#把结果转为1维数据

            #打印图片路径及名称
            image_path = os.path.join(root,file)
            print(image_path)
            #显示图片
            img=Image.open(image_path)
            plt.imshow(img)
            plt.axis(\'off\')
            plt.show()

            #排序
            top_k = predictions.argsort()[-5:][::-1]
            node_lookup = NodeLookup()
            for node_id in top_k:     
                #获取分类名称
                human_string = node_lookup.id_to_string(node_id)
                #获取该分类的置信度
                score = predictions[node_id]
                print(\'%s (score = %.5f)\' % (human_string, score))
            print()

识别结果:

images/timg.jpg
 
 
Saluki, gazelle hound (score = 0.36788)
whippet (score = 0.34290)
borzoi, Russian wolfhound (score = 0.10900)
Ibizan hound, Ibizan Podenco (score = 0.02119)
Italian greyhound (score = 0.01114)

images/u=245211623,3377434879&fm=27&gp=0.jpg
 
 
Indian elephant, Elephas maximus (score = 0.95537)
African elephant, Loxodonta africana (score = 0.01655)
tusker (score = 0.00988)
triceratops (score = 0.00029)
thunder snake, worm snake, Carphophis amoenus (score = 0.00014)


从结果来看,识别挺准确的,差不多常见的东西都能识别出来。

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