Mask_RCNN：使用自己训练好的模型进行预测 - 好文

#2018/06/04 更新

使用官方的权重只检测特定的类别看这里：

Mask_RCNN：使用COCO权重进行特定类别预测（只标记出你需要的类别）
<https://blog.csdn.net/qq_15969343/article/details/80568579>

#以下为原文：

今天我们来说一下，如何使用自己训练出来的Mask_RCNN模型，或是官方自己的模型权重来进行预测：

该Mask_RCNN版本基于：Python3，Keras，TensorFlow，我使用的具体版本为：

* Python 3.6.3
* TensorFlow 1.7
* Keras 2.1.5

tensorflow安装:

https://blog.csdn.net/qq_15969343/article/details/79971469
<https://blog.csdn.net/qq_15969343/article/details/79971469>

Mask-RCNN ：

https://github.com/matterport/Mask_RCNN
<https://github.com/matterport/Mask_RCNN>

1.加载模块以及载入模型权重：

import os import sys import random import math import numpy as np import
skimage.io import matplotlib import matplotlib.pyplot as plt import coco import
utils import model as modellib import visualize from config import Config #
Root directory of the project ROOT_DIR = os.getcwd() # Directory to save logs
and trained model MODEL_DIR = os.path.join(ROOT_DIR, "logs") # Local path to
trained weights file MODEL_WEIGHT_PATH = os.path.join(ROOT_DIR,
"mask_rcnn_val_all.h5") #这里输入模型权重的路径 # Download COCO trained weights from
Releases if needed if not os.path.exists(MODEL_WEIGHT_PATH):
utils.download_trained_weights(MODEL_WEIGHT_PATH) # Directory of images to run
detection on IMAGE_DIR = os.path.join(ROOT_DIR,
"samples\\balloon\\datasets\\balloon\\val2") #这是输入你要预测图片的路径

2.根据自己训练时候的配置，从Config类中继承创建一个新类:

例如，我要检测的物体有5种：'person', 'book', 'chair', 'bottle', 'sports bag'再加上背景则一共是6种：
class somethingConfig(Config): """Configuration for training on MS COCO.
Derives from the base Config class and overrides values specific to the COCO
dataset. """ # Give the configuration a recognizable name NAME = "something" #
We use a GPU with 12GB memory, which can fit two images. # Adjust down if you
use a smaller GPU. IMAGES_PER_GPU = 2 # Uncomment to train on 8 GPUs (default
is 1) # GPU_COUNT = 8 # Number of classes (including background) NUM_CLASSES =
1 + 5 # COCO has 80 classes

3.根据上面的类，新建一个专门用于预测的类：

class InferenceConfig(somethingConfig): # Set batch size to 1 since we'll be
running inference on # one image at a time. Batch size = GPU_COUNT *
IMAGES_PER_GPU GPU_COUNT = 1 IMAGES_PER_GPU = 1 config = InferenceConfig()

4.载入图像，进行预测：

# Create model object in inference mode. model =
modellib.MaskRCNN(mode="inference", model_dir=MODEL_DIR, config=config) # Load
weights trained on MS-COCO model.load_weights(MODEL_WEIGHT_PATH, by_name=True)
# COCO Class names # Index of the class in the list is its ID. For example, to
get ID of # the teddy bear class, use: class_names.index('teddy bear')
class_names = ['BG', 'person', 'book', 'chair', 'bottle', 'sports bag'] # Load
a random image from the images folder file_names = next(os.walk(IMAGE_DIR))[2]
for x in range(len(file_names)): image =
skimage.io.imread(os.path.join(IMAGE_DIR, file_names[x])) # Run detection
results = model.detect([image], verbose=1) # Visualize results r = results[0]
visualize.display_instances(image, r['rois'], r['masks'], r['class_ids'],
class_names, r['scores'])

5.预测结果：

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