img_name = img_file[0].split('.')[-1]这句话什么意思

# 将 OpenCV 格式的图片转换为 PIL.Image 格式 img_pil = Image.fromarray(cv2.cvtColor(copyfile, cv2.COLOR_BGR2RGB)) # 在指定路径中保存图片 if not os.path.exists(os.path.join(rectangle_dir,image_name)): os.makedirs(os.path.join(rectangle_dir,image_name)) image_path = image_name.split('/')[:2] image_real_name=image_name.split('/')[-1] img_pil.save(os.path.join(rectangle_dir,image_name),format='JPEG') IsADirectoryError: [Errno 21] Is a directory: '/home/u1/ywj/deepfashion/clothes_change_ywj/rectangleimg/img/Sheer_Pleated-Front_Blouse/img_00000001.jpg'

file_name = image_name.split('/')[-1] # 创建目录 if not os.path.exists(dir_path): os.makedirs(dir_path) # 拼接保存图片的路径和文件名 save_path = os.path.join(dir_path, file_name) # 保存图片 ...

优化代码import numpy as np from PIL import Image from sklearn import svm from sklearn.model_selection import train_test_split import os import matplotlib.pyplot as plt # 定义图像文件夹路径和类别 cat_path = "cats/" dog_path = "dogs/" cat_label = 0 dog_label = 1 # 定义图像预处理函数 def preprocess_image(file_path): # 读取图像并转换为灰度图像 img = Image.open(file_path).convert('L') # 调整图像尺寸 img = img.resize((100, 100)) # 将图像转换为 Numpy 数组 img_array = np.array(img) # 将二维数组展平为一维数组 img_array = img_array.reshape(-1) return img_array # 读取猫和狗的图像并转换成 Numpy 数组 X = [] y = [] for file_name in os.listdir(cat_path): file_path = os.path.join(cat_path, file_name) img_array = preprocess_image(file_path) X.append(img_array) y.append(cat_label) for file_name in os.listdir(dog_path): file_path = os.path.join(dog_path, file_name) img_array = preprocess_image(file_path) X.append(img_array) y.append(dog_label) X = np.array(X) y = np.array(y) # 将数据集划分为训练集和测试集 X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.3) # 训练 SVM 分类器 clf = svm.SVC(kernel='linear') clf.fit(X_train, y_train) # 在测试集上进行预测 y_pred = clf.predict(X_test) # 计算测试集上的准确率 accuracy = np.mean(y_pred == y_test) print("Accuracy:", accuracy) # 显示测试集中的前 16 张图像和它们的预测结果 fig, axes = plt.subplots(nrows=4, ncols=4, figsize=(8, 8)) for i, ax in enumerate(axes.flat): # 显示图像 ax.imshow(X_test[i].reshape(100, 100), cmap='gray') # 显示预测结果和标签 if y_pred[i] == 0: ax.set_xlabel("Cat") else: ax.set_xlabel("Dog") ax.set_xticks([]) ax.set_yticks([]) plt.show()

这段代码已经很简洁了，不过还有一些可以优化的地方： 1. 在导入模块时，可以将不同模块分行导入，以提高代码可读性。 2. 在预处理函数中，可以将调整图像尺寸和转换为 Numpy 数组合并为一步，以减少代码行数。 3...

讲解代码实现的功能 def initFaces(self): # 存储知道人名列表 known_names = [] # 存储知道的特征值 known_encodings = [] # 遍历存储人脸图片的文件夹 db_folder = "images/db_faces" face_imgs = os.listdir(db_folder) # 遍历图片，将人脸图片转化为向量 for face_img in face_imgs: face_img_path = os.path.join(db_folder, face_img) face_name = face_img.split(".")[0] load_image = face_recognition.load_image_file(face_img_path) # 加载图片 image_face_encoding = face_recognition.face_encodings(load_image)[0] # 获得128维特征值 known_names.append(face_name) # 添加到人名的列表 known_encodings.append(image_face_encoding) # 添加到向量的列表 return known_names, known_encodings

3. 对于每个人脸图片文件 face_img，将其路径拼接到 db_folder 上，然后使用 face_recognition 库中的 load_image_file() 函数加载图片，并使用 face_encodings() 函数获取该图片的128维特征向量； 4. 将该图片的...

from torch.utils.data import Dataset from torch.utils.data.dataset import T_co import os import cv2 as cv def read_label(path): file = open(path, "r", encoding='utf-8') label = file.readline() file.close() return label class MyDataset(Dataset): def _init__(self, train_path): self.train_path = train_path self.image_path = os.path.join(train_path, 'image') self.label_path = os.path.join(train_path, "label") self.image_path_list = os.listdir(self.image_path) def getitem(self, index) -> T_co: image_name = self.image_path_list[index] image_path = os.path.join(self.image_path, image_name) img = cv.imread(image_path) label_name = 'txt'.join(image_name.rsplit(image_name.split('. ')[-1], 1)) label_path = os.path.join(self.label_path, label_name) label = read_label(label_path) return img,label def len(self): return Len(self.image_path_list) my_dataset = MyDataset("dataset/train") data_index = 100 img, label = my_dataset[data_index] cv.imshow(label+ str(data_index)+str(Len(my_dataset)) + ')', img) cv.waitKey(0)详解这段代码

这段代码定义了一个自定义的 PyTorch 数据集类 MyDataset，用于加载训练数据集中的图像和标签。其中： - _init__ 方法初始化了数据集的路径和图像文件名列表； - __getitem__ 方法按照给定的索引 index，读取...

data_folder = '../../data/' set_list = ['train','testA','testB'] size_list = [10000,2000,2000] time1= time.time() for set_name,set_size in zip(set_list,size_list): output_file = data_folder + set_name + '_ubyte.txt' f = open(output_file, "w") f.close() Img_ind = 0 input_file = data_folder + set_name +'.txt' with open(input_file) as f: for content in f: Img_ind = Img_ind +1 print('transforming ' + set_name + ': ' + str(Img_ind).zfill(5)) line = content.split(',') title = line[0] + ' '+line[1] data_write = np.asarray(line[2].strip().split(' ')).astype(np.ubyte) data_write = (data_write + 1).astype(np.ubyte) if data_write.max()>255: print('too large') if data_write.min()<0: print('too small') f = open(output_file, "a") f.write(data_write.tobytes()) f.close()

这段代码的功能是将给定的数据集（train、testA、testB）转换为ubyte格式的文件，并将其保存在指定的文件夹中。代码中，data_folder 变量指定了数据所在的文件夹。 set_list 是数据集名称的列表， size_list...

from pdb import set_trace as st import os import numpy as np import cv2 import argparse parser = argparse.ArgumentParser('create image pairs') parser.add_argument('--fold_A', dest='fold_A', help='input directory for image A', type=str, default='./dataset/blurred') parser.add_argument('--fold_B', dest='fold_B', help='input directory for image B', type=str, default='./dataset/sharp') parser.add_argument('--fold_AB', dest='fold_AB', help='output directory', type=str, default='../dataset/out') parser.add_argument('--num_imgs', dest='num_imgs', help='number of images',type=int, default=1000000) parser.add_argument('--use_AB', dest='use_AB', help='if true: (0001_A, 0001_B) to (0001_AB)',action='store_true') args = parser.parse_args() for arg in vars(args): print('[%s] = ' % arg, getattr(args, arg)) splits = os.listdir(args.fold_A) for sp in splits: img_fold_A = os.path.join(args.fold_A, sp) img_fold_B = os.path.join(args.fold_B, sp) img_list = os.listdir(img_fold_A) if args.use_AB: img_list = [img_path for img_path in img_list if '_A.' in img_path] num_imgs = min(args.num_imgs, len(img_list)) print('split = %s, use %d/%d images' % (sp, num_imgs, len(img_list))) img_fold_AB = os.path.join(args.fold_AB, sp) if not os.path.isdir(img_fold_AB): os.makedirs(img_fold_AB) print('split = %s, number of images = %d' % (sp, num_imgs)) for n in range(num_imgs): name_A = img_list[n] path_A = os.path.join(img_fold_A, name_A) if args.use_AB: name_B = name_A.replace('_A.', '_B.') else: name_B = name_A path_B = os.path.join(img_fold_B, name_B) if os.path.isfile(path_A) and os.path.isfile(path_B): name_AB = name_A if args.use_AB: name_AB = name_AB.replace('_A.', '.') # remove _A path_AB = os.path.join(img_fold_AB, name_AB) im_A = cv2.imread(path_A, cv2.IMREAD_COLOR) im_B = cv2.imread(path_B, cv2.IMREAD_COLOR) im_AB = np.concatenate([im_A, im_B], 1) cv2.imwrite(path_AB, im_AB),运行上述代码，提示错误：NotADirectoryError: [WinError 267] 目录名称无效。: 'D:\Users\Administrator\PycharmProjects\pythonProject\DeblurGAN-master\datasets\blurred\1.jpg'

具体来说，是出现了一个名为'1.jpg'的文件，而在代码中尝试将其作为目录来处理。你需要检查代码中是否有将文件名误认为是目录名的情况，可以使用os.path.isdir()函数来判断是否为目录。同时，你也可以手动检查一下...

解释如下代码：for set_name,set_size in zip(set_list,size_list): output_file = data_folder + set_name + '_ubyte.txt' f = open(output_file, "w") f.close() Img_ind = 0 input_file = data_folder + set_name +'.txt' with open(input_file) as f: for content in f: Img_ind = Img_ind +1 print('transforming ' + set_name + ': ' + str(Img_ind).zfill(5)) line = content.split(',') title = line[0] + ' '+line[1] data_write = np.asarray(line[2].strip().split(' ')).astype(np.ubyte) data_write = (data_write + 1).astype(np.ubyte) if data_write.max()>255: print('too large') if data_write.min()<0: print('too small') f = open(output_file, "a") f.write(data_write.tobytes()) f.close() time2 = time.time() print('total elapse time:'+ str(time2- time1))

这段代码的作用是将多个数据集中的图片数据转换为ubyte格式，并将它们分别存储在以数据集名命名的文件中。其中，set_list和size_list是两个列表，分别存储了每个数据集的名称和大小。代码中的循环语句通过zip函数将...

改进一下这段代码import os import glob import numpy as np from PIL import Image folder_path = "/path/to/folder" max_line_num = 0 max_line_num_file = "" # 遍历txt文件 for file_path in glob.glob(os.path.join(folder_path, "*.txt")): with open(file_path) as f: lines = f.readlines() line_num = len(lines) if line_num > max_line_num: max_line_num = line_num max_line_num_file = file_path elif line_num == max_line_num: # 行数相同，比较第六个数据的平均值 data = [] for line in lines: data.append(float(line.split()[5])) # 获取第六个数据 mean = np.mean(data) if mean > max_mean: max_mean = mean max_line_num_file = file_path # 打开jpg文件 jpg_path = os.path.splitext(max_line_num_file)[0] + ".jpg" img = Image.open(jpg_path) img.show() 报错了 name 'max_mean' is not defined

在代码中，没有定义 max_mean ...jpg_path = os.path.splitext(max_line_num_file)[0] + ".jpg" img = Image.open(jpg_path) img.show() 请注意，上述代码中的 /path/to/folder 应替换为实际文件夹的路径。

def read_directory(directory_name,height,width,normal): file_list=os.listdir(directory_name) file_list.sort(key=lambda x: int(x.split('-')[0])) img = [] label0=[] for each_file in file_list: img0 = Image.open(directory_name + '/'+each_file) img0 = img0.convert('L') gray = img0.resize((height,width)) img.append(np.array(gray).astype(np.float)) label0.append(float(each_file.split('.')[0][-1])) if normal: data = np.array(img)/255.0#归一化 else: data = np.array(img) data=data.reshape(-1,1,height,width) label=np.array(label0) return data,label解释一下、

这个函数有四个参数，分别是目录名称，图像的高度，图像的宽度，以及一个布尔值，表示是否需要将图像数据归一化到 [0,1] 范围内。首先，这个函数使用 os.listdir() 函数读取目录下的所有文件名，并按照文件名的...

def unzip_infer_data(src_path,target_path): ''' 解压预测数据集 ''' if(not os.path.isdir(target_path)): z = zipfile.ZipFile(src_path, 'r') z.extractall(path=target_path) z.close() def load_image(img_path): ''' 预测图片预处理 ''' img = Image.open(img_path) if img.mode != 'RGB': img = img.convert('RGB') img = img.resize((224, 224), Image.BILINEAR) img = np.array(img).astype('float32') img = img.transpose((2, 0, 1)) # HWC to CHW img = img/255 # 像素值归一化 return img infer_src_path = '/home/aistudio/data/data55032/archive_test.zip' infer_dst_path = '/home/aistudio/data/archive_test' unzip_infer_data(infer_src_path,infer_dst_path) para_state_dict = paddle.load("MyCNN") model = MyCNN() model.set_state_dict(para_state_dict) #加载模型参数 model.eval() #验证模式 #展示预测图片 infer_path='data/archive_test/alexandrite_6.jpg' img = Image.open(infer_path) plt.imshow(img) #根据数组绘制图像 plt.show() #显示图像 #对预测图片进行预处理 infer_imgs = [] infer_imgs.append(load_image(infer_path)) infer_imgs = np.array(infer_imgs) label_dic = train_parameters['label_dict'] for i in range(len(infer_imgs)): data = infer_imgs[i] dy_x_data = np.array(data).astype('float32') dy_x_data=dy_x_data[np.newaxis,:, : ,:] img = paddle.to_tensor (dy_x_data) out = model(img) lab = np.argmax(out.numpy()) #argmax():返回最大数的索引 print("第{}个样本,被预测为：{},真实标签为：{}".format(i+1,label_dic[str(lab)],infer_path.split('/')[-1].split("_")[0])) print("结束") 以上代码进行DNN预测，根据这段代码写一段续写一段利用这个模型进行宝石预测的GUI界面,其中包含预测结果是否正确的判断功能

self.true_label = self.image_path.split('/')[-1].split("_")[0] self.predicted_label, label_dic = predict(self.image_path, self.model) result = check_result(self.predicted_label, self.true_label) ...

data_crop = crop_pointcloud(data_crop, x_o, y_o, x_i, y_i, R_o, R_i, z_critical) data_crop = data_crop[:, :, 10:] file_name = str(subdir.path.split('/')[-1].split('_')[-2]) outpath0 = os.path.join(outpath_raw, file_name) # outpath1 = os.path.join(outpath_img, file_name) data_crop.astype('int8').tofile(outpath0) 翻译一下

这段代码是将点云数据进行裁剪，并将结果存储到文件中。具体步骤如下： 1. 使用函数crop_pointcloud对点云数据进行裁剪，该函数需要传入一些参数，包括裁剪的范围、关键高度等。 2. 对裁剪后的点云数据进行切片...

# -- coding: utf-8 -- """ Transform the data type from ascii to ubyte format (8 bits unsigned binary) and save to new files, which would reduce the data size to 1/3, and would save the data transforming time when read by the python @author: Marmot """ import numpy as np import time from itertools import islice import pandas as pd # data_folder = '../../data/' set_list = ['train','testA','testB'] size_list = [10000,2000,2000] time1= time.time() for set_name,set_size in zip(set_list,size_list): output_file = data_folder + set_name + '_ubyte.txt' f = open(output_file, "w") f.close() Img_ind = 0 input_file = data_folder + set_name +'.txt' with open(input_file) as f: for content in f: Img_ind = Img_ind +1 print('transforming ' + set_name + ': ' + str(Img_ind).zfill(5)) line = content.split(',') title = line[0] + ' '+line[1] data_write = np.asarray(line[2].strip().split(' ')).astype(np.ubyte) data_write = (data_write + 1).astype(np.ubyte) if data_write.max()>255: print('too large') if data_write.min()<0: print('too small') f = open(output_file, "a") f.write(data_write.tobytes()) f.close() time2 = time.time() print('total elapse time:'+ str(time2- time1)) #%% generate train label list value_list =[] set_name = 'train' input_file = data_folder + set_name +'.txt' with open(input_file) as f: for content in f: line = content.split(',') value_list.append(float(line[1])) value_list = pd.DataFrame(value_list, columns=['value']) value_list.to_csv(data_folder + 'train_label.csv',index = False,header = False)

这段代码的主要功能是将数据集中的图像像素值从 ASCII 码转换为无符号 8 位二进制格式，并保存到新文件中，同时生成训练集标签列表。代码首先定义了一个数据路径列表 set_list 和一个数据子集大小列表 size_...

优化程序import os import xml.etree.ElementTree as ET def convert_txt_to_xml(txt_file, xml_file): # 创建XML根节点 root = ET.Element("annotation") # 读取txt文件内容 with open(txt_file, "r") as f: lines = f.readlines() # 创建子节点 folder = ET.SubElement(root, "folder") folder.text = "labelimg" filename = ET.SubElement(root, "filename") filename.text = os.path.splitext(os.path.basename(txt_file))[0] + ".jpg" # 循环处理每行数据 for line in lines: line = line.strip().split(" ") # 创建对象节点 object_node = ET.SubElement(root, "object") # 创建子节点 name = ET.SubElement(object_node, "name") name.text = line[0] pose = ET.SubElement(object_node, "pose") pose.text = "Unspecified" truncated = ET.SubElement(object_node, "truncated") truncated.text = "0" difficult = ET.SubElement(object_node, "difficult") difficult.text = "0" # 创建子节点（边界框） bndbox = ET.SubElement(object_node, "bndbox") xmin = ET.SubElement(bndbox, "xmin") xmin.text = line[1] ymin = ET.SubElement(bndbox, "ymin") ymin.text = line[2] xmax = ET.SubElement(bndbox, "xmax") xmax.text = line[3] ymax = ET.SubElement(bndbox, "ymax") ymax.text = line[4] # 创建XML树对象 tree = ET.ElementTree(root) # 写入XML文件 tree.write(xml_file) # 示例用法 txt_file = "txt/labels" xml_file = "txt/xml" convert_txt_to_xml(txt_file, xml_file) ，修改为对labels文件夹下的所有txt文件进行转换，转换后的xml文件并保存在xml文件夹下

xml_file = os.path.splitext(txt_file)[0] + ".xml" xml_path = os.path.join(xml_folder, xml_file) # 创建XML根节点 root = ET.Element("annotation") # 读取txt文件内容 with open(txt_path, "r") as f:...

解释代码：import os.path import torch import torch.nn as nn from torchvision import models, transforms from torch.autograd import Variable import numpy as np from PIL import Image features_dir = './features' # 存放特征的文件夹路径 img_path = "F:\\cfpg\\result\\conglin.jpg" # 图片路径 file_name = img_path.split('/')[-1] # 图片路径的最后一个/后面的名字 feature_path = os.path.join(features_dir, file_name + '.txt') # /后面的名字加txt transform1 = transforms.Compose([ # 串联多个图片变换的操作 transforms.Resize(256), # 缩放 transforms.CenterCrop(224), # 中心裁剪 transforms.ToTensor()] # 转换成Tensor ) img = Image.open(img_path) # 打开图片 img1 = transform1(img) # 对图片进行transform1的各种操作 # resnet18 = models.resnet18(pretrained = True) resnet50_feature_extractor = models.resnet50(pretrained=True) # 导入ResNet50的预训练模型 resnet50_feature_extractor.fc = nn.Linear(2048, 2048) # 重新定义最后一层 torch.nn.init.eye(resnet50_feature_extractor.fc.weight) # 将二维tensor初始化为单位矩阵 for param in resnet50_feature_extractor.parameters(): param.requires_grad = False # resnet152 = models.resnet152(pretrained = True) # densenet201 = models.densenet201(pretrained = True) x = Variable(torch.unsqueeze(img1, dim=0).float(), requires_grad=False) # y1 = resnet18(x) y = resnet50_feature_extractor(x) y = y.data.numpy() np.savetxt(feature_path, y, delimiter=',') # y3 = resnet152(x) # y4 = densenet201(x) y_ = np.loadtxt(feature_path, delimiter=',').reshape(1, 2048)

这段代码主要是使用预训练的ResNet50模型提取一张图片的特征，并将特征保存到文本文件中。具体解释如下： 1. 导入需要的库，包括os.path、torch、torch.nn、torchvision、numpy、PIL等。 2. 定义一个变量features_...

img_name = img_file[0].split('.')[-1]这句话什么意思

img_file = osp.join(self.root, name.split()[0])

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