使用mask scoring RCNN训练自己的数据集
本文主要參考下面兩篇博文,并在部分細節處做了修改。
https://blog.csdn.net/XX_123_1_RJ/article/details/102733175?depth_1-utm_source=distribute.pc_relevant.none-task&utm_source=distribute.pc_relevant.none-task
https://blog.csdn.net/linolzhang/article/details/97833354
一、數據集準備
(訓練集驗證集測試集的數據分別準備)
1、標注數據集
大多數人會用labelme來標注數據集,然后用labelme將每張標注圖片都生成一個json文件。labelme教程網上很多,這里不再贅述。
本人由于原圖的標注目標很小,用labelme標注未免不精確,所以先用PS手動標注后再寫代碼把標注圖轉換成了labelme格式的json文件。
結果如圖:
2、將這些json文件轉換成coco格式
這一步我使用如下代碼可成功轉換。
# -*- coding:utf-8 -*-
import os, sys
import argparse
import json
import matplotlib.pyplot as plt
import skimage.io as io
from labelme import utils
import numpy as np
import glob
import PIL.Image
class MyEncoder(json.JSONEncoder):
def default(self, obj):
if isinstance(obj, np.integer):
return int(obj)
elif isinstance(obj, np.floating):
return float(obj)
elif isinstance(obj, np.ndarray):
return obj.tolist()
else:
return super(MyEncoder, self).default(obj)
class labelme2coco(object):
def __init__(self, labelme_json=[], save_json_path='./tran.json'):
'''
:param labelme_json: 所有labelme的json文件路徑組成的列表
:param save_json_path: json保存位置
'''
self.labelme_json = labelme_json
self.save_json_path = save_json_path
self.images = []
self.categories = []
self.annotations = []
# self.data_coco = {}
self.label = []
self.annID = 1
self.height = 0
self.width = 0
self.save_json()
def data_transfer(self):
for num, json_file in enumerate(self.labelme_json):
with open(json_file, 'r') as fp:
data = json.load(fp) # 加載json文件
self.images.append(self.image(data, num))
for shapes in data['shapes']:
label = shapes['label']
if label not in self.label:
self.categories.append(self.categorie(label))
self.label.append(label)
points = shapes['points'] # 這里的point是用rectangle標注得到的,只有兩個點,需要轉成四個點
points.append([points[0][0], points[1][1]])
points.append([points[1][0], points[0][1]])
self.annotations.append(self.annotation(points, label, num))
self.annID += 1
def image(self, data, num):
image = {}
#img = utils.img_b64_to_arr(data['imageData']) # 解析原圖片數據
# img=io.imread(data['imagePath']) # 通過圖片路徑打開圖片
# img = cv2.imread(data['imagePath'], 0)
# height, width = img.shape[:2]
height = data['imageHeight']
width = data['imageWidth']
image['height'] = height
image['width'] = width
image['id'] = num + 1
image['file_name'] = data['imagePath'].split('/')[-1]
self.height = height
self.width = width
return image
def categorie(self, label):
categorie = {}
categorie['supercategory'] = 'Cancer'
categorie['id'] = len(self.label) + 1 # 0 默認為背景
categorie['name'] = label
return categorie
def annotation(self, points, label, num):
annotation = {}
annotation['segmentation'] = [list(np.asarray(points).flatten())]
annotation['iscrowd'] = 0
annotation['image_id'] = num + 1
# annotation['bbox'] = str(self.getbbox(points)) # 使用list保存json文件時報錯(不知道為什么)
# list(map(int,a[1:-1].split(','))) a=annotation['bbox'] 使用該方式轉成list
annotation['bbox'] = list(map(float, self.getbbox(points)))
annotation['area'] = annotation['bbox'][2] * annotation['bbox'][3]
# annotation['category_id'] = self.getcatid(label)
annotation['category_id'] = self.getcatid(label) # 注意,源代碼默認為1
annotation['id'] = self.annID
return annotation
def getcatid(self, label):
for categorie in self.categories:
if label == categorie['name']:
return categorie['id']
return 1
def getbbox(self, points):
# img = np.zeros([self.height,self.width],np.uint8)
# cv2.polylines(img, [np.asarray(points)], True, 1, lineType=cv2.LINE_AA) # 畫邊界線
# cv2.fillPoly(img, [np.asarray(points)], 1) # 畫多邊形 內部像素值為1
polygons = points
mask = self.polygons_to_mask([self.height, self.width], polygons)
return self.mask2box(mask)
def mask2box(self, mask):
'''從mask反算出其邊框
mask:[h,w] 0、1組成的圖片
1對應對象,只需計算1對應的行列號(左上角行列號,右下角行列號,就可以算出其邊框)
'''
# np.where(mask==1)
index = np.argwhere(mask == 1)
rows = index[:, 0]
clos = index[:, 1]
# 解析左上角行列號
left_top_r = np.min(rows) # y
left_top_c = np.min(clos) # x
# 解析右下角行列號
right_bottom_r = np.max(rows)
right_bottom_c = np.max(clos)
# return [(left_top_r,left_top_c),(right_bottom_r,right_bottom_c)]
# return [(left_top_c, left_top_r), (right_bottom_c, right_bottom_r)]
# return [left_top_c, left_top_r, right_bottom_c, right_bottom_r] # [x1,y1,x2,y2]
return [left_top_c, left_top_r, right_bottom_c - left_top_c,
right_bottom_r - left_top_r] # [x1,y1,w,h] 對應COCO的bbox格式
def polygons_to_mask(self, img_shape, polygons):
mask = np.zeros(img_shape, dtype=np.uint8)
mask = PIL.Image.fromarray(mask)
xy = list(map(tuple, polygons))
PIL.ImageDraw.Draw(mask).polygon(xy=xy, outline=1, fill=1)
mask = np.array(mask, dtype=bool)
return mask
def data2coco(self):
data_coco = {}
data_coco['images'] = self.images
data_coco['categories'] = self.categories
data_coco['annotations'] = self.annotations
return data_coco
def save_json(self):
self.data_transfer()
self.data_coco = self.data2coco()
# 保存json文件
json.dump(self.data_coco, open(self.save_json_path, 'w'), indent=4, cls=MyEncoder) # indent=4 更加美觀顯示
if __name__ == '__main__':
src_folder = os.path.abspath(sys.argv[1])
# load src - join json
labelme_json = glob.glob(src_folder + '/*.json')
labelme2coco(labelme_json, sys.argv[2])
在運行這個代碼時,只有把所有需要的模塊都安裝在anaconda當時安裝labelme的那個虛擬環境下才能運行成功。
二、環境搭建(linux)
1、創建pytorch環境
conda create --name maskrcnn_benchmark source activate maskrcnn_benchmark #所有模塊的安裝都在此虛擬環境下 conda install ipython pip install ninja yacs cython matplotlib pyqt5 conda install pytorch-nightly torchvision=0.2.1 cudatoolkit=9.0
上面的步驟執行完之后還要離線安裝torch1.0.1。因為某種墻的存在,在線下載torch不太容易實現,國內鏡像源又沒有1.0.1這個版本。而經過博主長期的踩坑發現torch1.0.1和torchvision=0.2.1加上numpy1.17才是可用組合。這是torch1.0.1的下載鏈接:http://download.pytorch.org/whl/cu100/torch-1.0.1-cp36-cp36m-linux_x86_64.whl,建議直接迅雷下載。下載完成后,cd到模塊所在目錄然后pip installtorch-1.0.1-cp36-cp36m-linux_x86_64.whl即可。(本人的python是3.6,請酌情修改下載鏈接)
2、安裝cocoapi及apex
export INSTALL_DIR=$PWD # install pycocotools git clone https://github.com/cocodataset/cocoapi.git cd cocoapi/PythonAPI python setup.py build_ext install # install apex cd $INSTALL_DIR git clone https://github.com/NVIDIA/apex.git cd apex python setup.py install --cuda_ext --cpp_ext
3、編譯模型代碼
# install PyTorch Detection cd $INSTALL_DIR #maskrcnn-benchmark #git clone https://github.com/facebookresearch/maskrcnn-benchmark.git git clone https://github.com/zjhuang22/maskscoring_rcnn cd maskscoring_rcnn python setup.py build develop
三、訓練前的準備
1、數據和預訓練模型準備
在下載的maskscoring_rcnn中新建一個datasets目錄,可按如下結構放置你的json文件和原始圖像
─ datasets
└── annotations
├── coco_train.json
└── coco_test.json
└── coco_train #該文件夾放置訓練集的原始圖像
└── coco_test #該文件夾放置測試集的原始圖像
另外,maskscoring_rcnn的pretrained_models目錄下需要放置R-101.pkl和R-50.pkl這兩個預訓練模型,如果服務器連了網,在開始訓練模型之前會自動下載這兩個模型,如果服務器沒有網就需要手動下載放到pretrained_models下了。作者在GitHub也放了有這些模型的百度網盤鏈接。
2、修改參數
(1)修改 maskscoring_rcnn/configs 目錄下的配置文件,選擇其中的 e2e_ms_rcnn_R_50_FPN_1x.yaml訓練腳本,修改如下:
MODEL:
META_ARCHITECTURE: "GeneralizedRCNN"
WEIGHT: "catalog://ImageNetPretrained/MSRA/R-50"
PRETRAINED_MODELS: 'pretrained_models'
DATASETS:
TRAIN: ("coco_train_xxx",) # 1.設置訓練驗證集,名字可以隨意起,和其他配置文件對應即可。
TEST: ("coco_val_xxx",)
……(省略數行)
SOLVER:
BASE_LR: 0.002 #設置基礎學習率,原為0.02
WEIGHT_DECAY: 0.0001
STEPS: (60000, 80000)
MAX_ITER: 5000 #2.設置最大迭代次數,可根據圖片數量酌情增減,改小也可以更快看到結果。原為90000
(2)修改 maskscoring_rcnn/maskrcnn_benchmark/config 下的 paths_catalog.py 文件:
DATASETS = {
"coco_2014_train": ( "coco/train2014", "coco/annotations/instances_train2014.json",),
"coco_2014_val": ("coco/val2014", "coco/annotations/instances_val2014.json"),
"coco_2014_minival": ( "coco/val2014", "coco/annotations/instances_minival2014.json", ),
"coco_2014_valminusminival": (
"coco/val2014", "coco/annotations/instances_valminusminival2014.json", ),
#添加自己的數據集路徑信息,在相應的代碼段后面添加兩行即可
"coco_train_xxx": ("coco_mydata_train", "annotations/coco_mydata_train.json"),
"coco_val_xxx": ("coco_mydata_test", "annotations/coco_mydata_test.json"),
}
(3)修改 maskscoring_rcnn/maskrcnn_benchmark/config 下的 defaults.py 配置文件:
# Size of the smallest side of the image during training
_C.INPUT.MIN_SIZE_TRAIN = 800 # (800,)訓練集中圖片的最小邊長,酌情修改
# Maximum size of the side of the image during training
_C.INPUT.MAX_SIZE_TRAIN = 1333 #訓練集中圖片的最大邊長,酌情修改
# Size of the smallest side of the image during testing
_C.INPUT.MIN_SIZE_TEST = 800 #測試集中圖片的最小邊長,酌情修改
# Maximum size of the side of the image during testing
_C.INPUT.MAX_SIZE_TEST = 1333 #測試集中圖片的最大邊長,酌情修改
……省略數行……
_C.MODEL.ROI_BOX_HEAD.NUM_CLASSES = 3 # 修改分類數量,coco對應81(80+1),注意1加的是背景 _C.SOLVER.BASE_LR = 0.005 # 修改學習率,默認為0.001 _C.SOLVER.CHECKPOINT_PERIOD = 1000 # 修改check point數量,根據需要自定義 _C.SOLVER.IMS_PER_BATCH = 1 # 修改batch size,默認16,這個值要能整除訓練集的圖片數量 _C.TEST.IMS_PER_BATCH = 1 # 修改test batch size,默認8,這個值要能整除測試集的圖片數量 _C.OUTPUT_DIR = "models/" # 設置模型保存路徑(對應自定義文件夾)
四、開始訓練
到maskscoring_rcnn所在目錄下執行:
python tools/train_net.py --config-file configs/e2e_ms_rcnn_R_50_FPN_1x.yaml python tools/test_net.py --config-file configs/e2e_ms_rcnn_R_50_FPN_1x.yaml
在models里面可以查看訓練日志。
五、模型預測
1、修改maskscoring_rcnn/configs 路徑下的對應的yaml文件的權重路徑。
MODEL:
META_ARCHITECTURE: "GeneralizedRCNN"
WEIGHT: "models/model_0005000.pth" # 訓練好的模型路徑
BACKBONE:
CONV_BODY: "R-50-FPN"
OUT_CHANNELS: 256
2、修改maskscoring_rcnn/demo 路徑下的 predictor.py 文件,添加類別信息。這個文件在原來的demo目錄下是沒有的,從mask rcnn benchmark的demo文件下復制過來即可。
class COCODemo(object):
# COCO categories for pretty print
CATEGORIES = [
"__background",
"cla_a",#根據自己的數據集修改類別信息
"cla_b",
"cla_c",
]
3、在maskscoring_rcnn/demo 下新建 predict.py,用于預測。
#!/usr/bin/env python
# coding=UTF-8
import os, sys
import numpy as np
import cv2
from maskrcnn_benchmark.config import cfg
from predictor import COCODemo
# 1.修改后的配置文件
config_file = "configs/e2e_ms_rcnn_R_50_FPN_1x.yaml"
# 2.配置
cfg.merge_from_file(config_file) # merge配置文件
cfg.merge_from_list(["MODEL.MASK_ON", True]) # 打開mask開關
cfg.merge_from_list(["MODEL.DEVICE", "cuda"]) # or設置為CPU ["MODEL.DEVICE", "cpu"]
#cfg.merge_from_list(["MODEL.DEVICE", "cpu"])
coco_demo = COCODemo(
cfg,
min_image_size=800,
confidence_threshold=0.5, # 3.設置置信度
)
if __name__ == '__main__':
in_folder = './datasets/test_images/'
out_folder = './datasets/test_images_out/'
if not os.path.exists(out_folder):
os.makedirs(out_folder)
for file_name in os.listdir(in_folder):
if not file_name.endswith(('jpg', 'png')):
continue
# load file
img_path = os.path.join(in_folder, file_name)
image = cv2.imread(img_path)
# method1. 直接得到opencv圖片結果
#predictions = coco_demo.run_on_opencv_image(image)
#save_path = os.path.join(out_folder, file_name)
#cv2.imwrite(save_path, predictions)
# method2. 獲取預測結果
predictions = coco_demo.compute_prediction(image)
top_predictions = coco_demo.select_top_predictions(predictions)
# draw
img = coco_demo.overlay_boxes(image, top_predictions)
img = coco_demo.overlay_mask(img, predictions)
img = coco_demo.overlay_class_names(img, top_predictions)
save_path = os.path.join(out_folder, file_name)
cv2.imwrite(save_path, img)
# print results
boxes = top_predictions.bbox.numpy()
labels = top_predictions.get_field("labels").numpy() #label = labelList[np.argmax(scores)]
scores = top_predictions.get_field("scores").numpy()
masks = top_predictions.get_field("mask").numpy()
for i in range(len(boxes)):
print('box:', i, ' label:', labels[i])
x1,y1,x2,y2 = [round(x) for x in boxes[i]] # = map(int, boxes[i])
print('x1,y1,x2,y2:', x1,y1,x2,y2)
4、運行程序。
python demo/predict.py
在運行的過程中會報錯找不到文件或者無法導入相關的庫,此時把相應的文件從 mask rcnn benchmark 對應的文件夾復制過來即可。具體操作可參考:https://www.cnblogs.com/littleLittleTiger/p/12582747.html
成功截圖如下
總結
以上是生活随笔為你收集整理的使用mask scoring RCNN训练自己的数据集的全部內容,希望文章能夠幫你解決所遇到的問題。
- 上一篇: 一个拥有12年SAP CRM WebCl
- 下一篇: python的基础,特点