Mask rcnn批量预测自己的测试集图像，去除白边保存和测试集实际大小的数据图像（以钢材DWTT断口预测实验为例）

1.批量预测自己的数据集图像--修改test.py文件

# -*- coding: utf-8 -*-
import os
import sys
import random
import math
import numpy as np
import skimage.io
import matplotlib
matplotlib.use('TkAgg')
import matplotlib.pyplot as plt
import cv2
import time
from mrcnn.config import Config
from datetime import datetime 

# Root directory of the project
ROOT_DIR = os.getcwd()
# Import Mask RCNN
sys.path.append(ROOT_DIR)  # To find local version of the library
from mrcnn import utils
import mrcnn.model as modellib
from mrcnn import visualize

# Directory to save logs and trained model
MODEL_DIR = os.path.join(ROOT_DIR, "logs")

# Local path to trained weights file
M_DIR = os.path.abspath("E:/graduation/Mask_RCNN-master/Mask_RCNN-master/maskrcnn_fragility/maskrcnn_fragility/logs/shapes20190604T2347/")
COCO_MODEL_PATH = os.path.join(M_DIR,"mask_rcnn_shapes_0015.h5")

# Download COCO trained weights from Releases if needed
if not os.path.exists(COCO_MODEL_PATH):
    utils.download_trained_weights(COCO_MODEL_PATH)
    print("cuiwei***********************")

# Directory of images to run detection on
IMAGE_DIR = os.path.join(ROOT_DIR, "images")

class ShapesConfig(Config):
    """Configuration for training on the toy shapes dataset.
    Derives from the base Config class and overrides values specific
    to the toy shapes dataset.
    """
    # Give the configuration a recognizable name
    NAME = "fragility"

    # Train on 1 GPU and 8 images per GPU. We can put multiple images on each
    # GPU because the images are small. Batch size is 8 (GPUs * images/GPU).
    GPU_COUNT = 1
    IMAGES_PER_GPU = 1

    # Number of classes (including background)
    NUM_CLASSES = 1 + 1  # background + 3 shapes

    # Use small images for faster training. Set the limits of the small side
    # the large side, and that determines the image shape.
    IMAGE_MIN_DIM = 256
    IMAGE_MAX_DIM = 512

    # Use smaller anchors because our image and objects are small
    RPN_ANCHOR_SCALES = (8 * 6, 16 * 6, 32 * 6, 64 * 6, 128 * 6)  # anchor side in pixels

    # Reduce training ROIs per image because the images are small and have
    # few objects. Aim to allow ROI sampling to pick 33% positive ROIs.
    TRAIN_ROIS_PER_IMAGE =100

    # Use a small epoch since the data is simple
    STEPS_PER_EPOCH = 100

    # use small validation steps since the epoch is small
    VALIDATION_STEPS = 50

#import train_tongue

class InferenceConfig(ShapesConfig):
    # 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()

model = modellib.MaskRCNN(mode="inference", model_dir=MODEL_DIR, config=config)


# 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(COCO_MODEL_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', 'fragility']
# Load a random image from the images folder

file_names = next(os.walk(IMAGE_DIR))[2]

image = skimage.io.imread(os.path.join(IMAGE_DIR, random.choice(file_names)))
#image = skimage.io.imread(os.path.abspath(IMAGE_DIR))

#####################################################################批量图像预测
count = os.listdir(IMAGE_DIR)

for i in range(0,len(count)):
    path = os.path.join(IMAGE_DIR, count[i])
    if os.path.isfile(path):
        file_names = next(os.walk(IMAGE_DIR))[2]
        image = skimage.io.imread(os.path.join(IMAGE_DIR, count[i]))
        # Run detection
        results = model.detect([image], verbose=1)
        r = results[0]
        visualize.display_instances(count[i],image, r['rois'], r['masks'], r['class_ids'],
                            class_names, r['scores'])

#####################################################################批量图像预测

主要修改部分主要集中在最后注释部分的批量图像预测。

2.去除白边保存和测试集实际大小的数据图像-

1)  修改visualize.py文件

def display_instances(count,image, boxes, masks, class_ids, class_names,
                      scores=None, title="",
                      figsize=(16, 16), ax=None,
                      #figsize=(2.56, 5.12), ax=None,
                      show_mask=True, show_bbox=True,
                      colors=None, captions=None):

2)  在函数display_instance()的定义中增加一个参数count,此参数和test.py文件中的count[i]参数相对应。为后续的保存文件命名作准备。

    #ax.set_ylim(height + 10, -10)   #显示图像的外围边框，保存原始图像大小的数据时需要注释掉
    #ax.set_xlim(-10, width + 10)

    ax.axis('off')      #关闭坐标轴

对这一部分需要进行注释修改。

3)  对if auto_show:部分进行的修改

 if auto_show:
        ###############保存预测结果图像

        fig = plt.gcf()
        fig.set_size_inches(width / 100.0, height / 100.0)  # 输出原始图像width*height的像素
        plt.gca().xaxis.set_major_locator(plt.NullLocator())
        plt.gca().yaxis.set_major_locator(plt.NullLocator())
        plt.subplots_adjust(top=1, bottom=0, left=0, right=1, hspace=0, wspace=0)
        plt.margins(0, 0)


        plt.savefig("E:/graduation/Mask_RCNN-master/Mask_RCNN-master/maskrcnn_fragility/maskrcnn_fragility/test_results/%3s.jpg" % (str(count[7:10])),pad_inches=0.0)      #使用原始图像名字的第7到第9个字符来命名新的图像

        ###############保存预测结果图像
        #plt.show()                    #在保存预测结果图像时，如果不想没保存一张显示一次，可以把 
                                       # 他注释掉。

修改完以上各个部分以后就可以进行批量的对自己测试集中的图像进行预测，并以测试集图像大小的像素值将图像进行保存。

其中测试集中的图像如下所示：

进行预测后保存的结果图像如下所示。 

数据集的实际大小时256*512的。

Mask R-CNN 中计算map参考下篇文章：

https://blog.csdn.net/hopegrace/article/details/103547356