def img_cut_roi_resize_to_target_black(img_txt_path,result_path): img_total = [] txt_total = [] file = os.listdir(img_txt_path) for filename in file: first, last = os.path.splitext(filename) if last == ".bmp": # 图片的后缀名 img_total.append(first) # print(img_total) else: txt_total.append(first) for img_ in img_total: if img_ in txt_total: filename_img = img_ + ".bmp" # 图片的后缀名 # print('filename_img:', filename_img) path1 = os.path.join(img_txt_path, filename_img) img = cv2.imread(path1) h, w = img.shape[0], img.shape[1] # 直接读取原图的长宽不会失真 img = cv2.resize(img, (w, h), interpolation=cv2.INTER_CUBIC) # resize 图像大小，否则roi区域可能会报错 # plt.imshow('resized_img',img) # 会报错，之后再次查看resize后的图片（已解决） # plt.show() filename_txt = img_ + ".txt" # print('filename_txt:', filename_txt) n = 1 with open(os.path.join(img_txt_path, filename_txt), "r+", encoding="utf-8", errors="ignore") as f: for line in f: aa = line.split(" ") x_center = w * float(aa[1]) # aa[1]左上点的x坐标 y_center = h * float(aa[2]) # aa[2]左上点的y坐标 width = int(w * float(aa[3])) # aa[3]图片width height = int(h * float(aa[4])) # aa[4]图片height lefttopx = int(x_center - width / 2.0) lefttopy = int(y_center - height / 2.0) # roi = img[lefttopy+1:lefttopy+height+3,lefttopx+1:lefttopx+width+1] # [左上y:右下y,左上x:右下x] (y1:y2,x1:x2)需要调参，否则裁剪出来的小图可能不太好 roi = img[lefttopy:lefttopy + height, lefttopx:lefttopx + width] # 目前没有看出差距 roi = img_resize_to_target_black(roi) # roi = cv2.copyMakeBorder(roi, 50, 50, 50, 50, cv2.BORDER_CONSTANT, value=[255, 255, 255]) # 是将原图长宽各个

VivadoHLS.rar_HLS_hls 图像_vivado_vivado hls resize_vivado图像

imresize.zip_matlab resize_resize image_resize image matlab_resi

在MATLAB中，imresize函数是用于图像缩放的核心工具，它允许用户调整图像的大小，无论是增大还是减小。本篇文章将深入探讨imresize函数的使用、参数、工作原理以及相关的图像处理概念。首先，imresize函数的...

优化这段代码import os import cv2 import numpy as np def MediumFilter(img_path='D:\pythonProject2\111.jpg'): img_src=cv2.imread(img_path) img=cv2.resize(src=img_src, dsize=(450, 450)) img=cv2.medianBlur(img, ksize=5) cv2.imshow('img', img) cv2.imshow('img_src', img_src) cv2.waitKey(0) cv2.destroyAllWindows() if name == 'main': print('Pycharm') MediumFilter()

def medium_filter(img_path): try: img_src = cv2.imread(img_path) img_resized = cv2.resize(src=img_src, dsize=(450, 450)) img_filtered = cv2.medianBlur(img_resized, ksize=5) cv2.imshow('img_...

def data_generator(): for folder in os.listdir("D:/wjd"): for file in os.listdir("D:/wjd/"+folder): file_paths = glob.glob('D:/wjd/*.png') for file_path in file_paths: img = Image.open(file_path) img = img.resize((224, 224)) img_arr = np.array(img) img_tensor = tf.convert_to_tensor(img_arr) img_tensor = tf.expand_dims(img_tensor, axis=0) print(img_tensor.shape) print(img_tensor.shape) # 输出张量的形状，我感觉不对，我应该删除那两行代码啊

img = img.resize((224, 224)) img_arr = np.array(img) img_tensor = tf.convert_to_tensor(img_arr) img_tensor = tf.expand_dims(img_tensor, axis=0) yield img_tensor 这样修改后，这个函数将会生成...

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 = './archive_test.zip' infer_dst_path = './archive_test' unzip_infer_data(infer_src_path,infer_dst_path) para_state_dict = paddle.load("MyDNN") model = MyDNN() 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='./archive_test/alexandrite_18.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")根据这一段代码续写一段利用这个模型进行宝石预测的GUI界面

img = ImageTk.PhotoImage(Image.open(img_path).resize((200, 200))) img_label.config(image=img) img_label.image = img # 创建选择图片按钮 select_button = tk.Button(window, text="选择图片", command=...

import cv2 import os def resize_image(image_path, width, height): """调整图片大小""" img = cv2.imread(image_path, cv2.IMREAD_UNCHANGED) resized = cv2.resize(img, (width, height), interpolation=cv2.INTER_AREA) cv2.imwrite(image_path, resized) def extract_frames(video_path, target_path): """提取视频帧并保存封面图""" try: vc = cv2.VideoCapture(video_path) # 读取视频 success, frame = vc.read() # 读取当前帧，success用于判断读取是否成功 count = 0 # 初始化计数器 while success: file_name = os.path.splitext(os.path.basename(video_path))[0] + f'_{count}.jpg' frame_path = os.path.join(target_path, file_name) cv2.imwrite(frame_path, frame) # 将当前帧保存为图片到 frame_path resize_image(frame_path, 2560, 1440) # 调整图片大小 success, frame = vc.read() # 继续读取下一帧 count += 1 # 计数器加1 except Exception as e: print(f"获取视频帧失败: {e}") if name == 'main': video_folder = 'D:/path/to/videos/1/银二-主井皮带_20230523151417' # 视频文件夹目录 target_path = 'D:/path/to/frames/1' # 帧截图保存路径 if not os.path.exists(target_path): # 如果目标路径不存在原文件夹的话就创建 os.makedirs(target_path) for file_name in os.listdir(video_folder): file_path = os.path.join(video_folder, file_name) if os.path.isfile(file_path) and file_name.endswith('.mp4'): extract_frames(file_path, target_path) print("程序执行完毕！")

2. 定义resize_image函数，用于调整图片大小。该函数接收三个参数：图片路径、目标宽度和目标高度。 3. 定义extract_frames函数，用于提取视频帧并保存封面图。该函数接收两个参数：视频路径和目标路径。 4. 在...

import io from pathlib import Path from PIL import Image def parse_bg_captcha(img, im_show=False, save_path=None): if isinstance(img, (str, Path)): _img = Image.open(img) elif isinstance(img, bytes): _img = Image.open(io.BytesIO(img)) else: raise ValueError(f'输入图片类型错误, 必须是<type str>/<type Path>/<type bytes>: {type(img)}') # 图片还原顺序, 定值 _Ge = [39, 38, 48, 49, 41, 40, 46, 47, 35, 34, 50, 51, 33, 32, 28, 29, 27, 26, 36, 37, 31, 30, 44, 45, 43, 42, 12, 13, 23, 22, 14, 15, 21, 20, 8, 9, 25, 24, 6, 7, 3, 2, 0, 1, 11, 10, 4, 5, 19, 18, 16, 17] w_sep, h_sep = 10, 80 # 还原后的背景图 new_img = Image.new('RGB', (260, 160)) for idx in range(len(_Ge)): x = _Ge[idx] % 26 * 12 + 1 y = h_sep if _Ge[idx] > 25 else 0 # 从背景图中裁剪出对应位置的小块 img_cut = _img.crop((x, y, x + w_sep, y + h_sep)) print(img_cut) # 将小块拼接到新图中 new_x = idx % 26 * 10 new_y = h_sep if idx > 25 else 0 new_img.paste(img_cut, (new_x, new_y)) save_path = Path(save_path).resolve().str() new_img.save(save_path) return new_img if name == 'main': parse_bg_captcha("bg.webp", im_show=True, save_path='bg.jpg') 使用node.js的sharp图像处理库实现类似于这段代码的作用

function parse_bg_captcha(img, im_show=false, save_path=null) { sharp(img) .extract([0, 0, 12, 80]) // 裁剪 .resize(10, 80) // 缩放 .toBuffer(function(err, buffer) { if (err) throw err; fs....

def load_img(img_path): out_np = np.asarray(Image.open(img_path)) if(out_np.ndim==2): out_np = np.tile(out_np[:,:,None],3) return out_np def resize_img(img, HW=(256,256), resample=3): return np.asarray(Image.fromarray(img).resize((HW[1],HW[0]), resample=resample))

这段代码实现了两个函数，一个是load_img，一个是resize_img。load_img函数用于读取图片，并将其转换为numpy数组；如果图片是灰度图像，则将其转换为RGB三通道图像。resize_img函数用于将图片按照指定的尺寸...

为以下的每句代码加注释：class PowerTransferMode: # 数据准备 def DataGen(self, dir_path, img_row, img_col, batch_size, is_train): if is_train: datagen = ImageDataGenerator(rescale=1. / 255, zoom_range=0.25, rotation_range=15., channel_shift_range=25., width_shift_range=0.02, height_shift_range=0.02, validation_split=0.2,horizontal_flip=True, fill_mode='constant') else: datagen = ImageDataGenerator(rescale=1. / 255) generator = datagen.flow_from_directory( dir_path, target_size=(img_row, img_col), batch_size=batch_size, shuffle=is_train) return generator

target_size=(img_row, img_col), # 图像 resize 的目标大小 batch_size=batch_size, # 每个 batch 包含的样本数 shuffle=is_train) # 是否打乱数据顺序 return generator # 返回迭代器对象

逐行详细解释以下代码并加注释from tensorflow import keras import matplotlib.pyplot as plt base_image_path = keras.utils.get_file( "coast.jpg", origin="https://img-datasets.s3.amazonaws.com/coast.jpg") plt.axis("off") plt.imshow(keras.utils.load_img(base_image_path)) #instantiating a model from tensorflow.keras.applications import inception_v3 model = inception_v3.InceptionV3(weights='imagenet',include_top=False) #配置各层对DeepDream损失的贡献 layer_settings = { "mixed4": 1.0, "mixed5": 1.5, "mixed6": 2.0, "mixed7": 2.5, } outputs_dict = dict( [ (layer.name, layer.output) for layer in [model.get_layer(name) for name in layer_settings.keys()] ] ) feature_extractor = keras.Model(inputs=model.inputs, outputs=outputs_dict) #定义损失函数 import tensorflow as tf def compute_loss(input_image): features = feature_extractor(input_image) loss = tf.zeros(shape=()) for name in features.keys(): coeff = layer_settings[name] activation = features[name] loss += coeff * tf.reduce_mean(tf.square(activation[:, 2:-2, 2:-2, :])) return loss #梯度上升过程 @tf.function def gradient_ascent_step(image, learning_rate): with tf.GradientTape() as tape: tape.watch(image) loss = compute_loss(image) grads = tape.gradient(loss, image) grads = tf.math.l2_normalize(grads) image += learning_rate * grads return loss, image def gradient_ascent_loop(image, iterations, learning_rate, max_loss=None): for i in range(iterations): loss, image = gradient_ascent_step(image, learning_rate) if max_loss is not None and loss > max_loss: break print(f"... Loss value at step {i}: {loss:.2f}") return image #hyperparameters step = 20. num_octave = 3 octave_scale = 1.4 iterations = 30 max_loss = 15. #图像处理方面 import numpy as np def preprocess_image(image_path): img = keras.utils.load_img(image_path) img = keras.utils.img_to_array(img) img = np.expand_dims(img, axis=0) img = keras.applications.inception_v3.preprocess_input(img) return img def deprocess_image(img): img = img.reshape((img.shape[1], img.shape[2], 3)) img /= 2.0 img += 0.5 img *= 255. img = np.clip(img, 0, 255).astype("uint8") return img #在多个连续上运行梯度上升 original_img = preprocess_image(base_image_path) original_shape = original_img.shape[1:3] successive_shapes = [original_shape] for i in range(1, num_octave): shape = tuple([int(dim / (octave_scale ** i)) for dim in original_shape]) successive_shapes.append(shape) successive_shapes = successive_shapes[::-1] shrunk_original_img = tf.image.resize(original_img, successive_shapes[0]) img = tf.identity(original_img) for i, shape in enumerate(successive_shapes): print(f"Processing octave {i} with shape {shape}") img = tf.image.resize(img, shape) img = gradient_ascent_loop( img, iterations=iterations, learning_rate=step, max_loss=max_loss ) upscaled_shrunk_original_img = tf.image.resize(shrunk_original_img, shape) same_size_original = tf.image.resize(original_img, shape) lost_detail = same_size_original - upscaled_shrunk_original_img img += lost_detail shrunk_original_img = tf.image.resize(original_img, shape) keras.utils.save_img("DeepDream.png", deprocess_image(img.numpy()))

img = keras.utils.img_to_array(img) img = np.expand_dims(img, axis=0) img = keras.applications.inception_v3.preprocess_input(img) return img def deprocess_image(img): img = img.reshape((img....

def image_generator(df, batch_size, img_size): num_samples = len(df) while True: for offset in range(0, num_samples, batch_size): batch_df = df[offset:offset+batch_size] images = [] for path in batch_df['path']: img = Image.open(path).resize(img_size) images.append(np.asarray(img)) X = np.array(images) yield X batch_size = 32 img_size = (600, 450) gen = image_generator(df, batch_size, img_size) # 读取生成器中的每个批次，并将所有图像数据存储在 df['image'] 列中 for i, batch_images in enumerate(gen): start_index = i * batch_size end_index = start_index + batch_images.shape[0] df.loc[start_index:end_index, 'image'] = batch_images代码为何出现ValueError: Must have equal len keys and value when setting with an iterable报错

img = Image.open(path).resize(img_size) images.append(np.asarray(img)) X = np.array(images) yield X batch_size = 32 img_size = (600, 450) gen = image_generator(df, batch_size, img_size) # 读取...

import os import json import torch from PIL import Image from torchvision import transforms from model import resnet34 def main(): device = torch.device("cuda:0" if torch.cuda.is_available() else "cpu") data_transform = transforms.Compose( [transforms.Resize(256), transforms.CenterCrop(224), transforms.ToTensor(), transforms.Normalize([0.485, 0.456, 0.406], [0.229, 0.224, 0.225])]) # load image # 指向需要遍历预测的图像文件夹 imgs_root = "../dataset/val" assert os.path.exists(imgs_root), f"file: '{imgs_root}' dose not exist." # 读取指定文件夹下所有jpg图像路径 img_path_list = [os.path.join(imgs_root, i) for i in os.listdir(imgs_root) if i.endswith(".jpg")] # read class_indict json_path = './class_indices.json' assert os.path.exists(json_path), f"file: '{json_path}' dose not exist." json_file = open(json_path, "r") class_indict = json.load(json_file) # create model model = resnet34(num_classes=16).to(device) # load model weights weights_path = "./newresNet34.pth" assert os.path.exists(weights_path), f"file: '{weights_path}' dose not exist." model.load_state_dict(torch.load(weights_path, map_location=device)) # prediction model.eval() batch_size = 8 # 每次预测时将多少张图片打包成一个batch with torch.no_grad(): for ids in range(0, len(img_path_list) // batch_size): img_list = [] for img_path in img_path_list[ids * batch_size: (ids + 1) * batch_size]: assert os.path.exists(img_path), f"file: '{img_path}' dose not exist." img = Image.open(img_path) img = data_transform(img) img_list.append(img) # batch img # 将img_list列表中的所有图像打包成一个batch batch_img = torch.stack(img_list, dim=0) # predict class output = model(batch_img.to(device)).cpu() predict = torch.softmax(output, dim=1) probs, classes = torch.max(predict, dim=1) for idx, (pro, cla) in enumerate(zip(probs, classes)): print("image: {} class: {} prob: {:.3}".format(img_path_list[ids * batch_size + idx], class_indict[str(cla.numpy())], pro.numpy())) if name == 'main': main()

这段代码实现了导入必要的包和模块，包括操作系统、JSON、PyTorch、PIL及其转换模块、还有定义的resnet34模型。在主函数中，首先根据可用GPU情况使用cuda或cpu作为设备，然后定义数据的处理流程，包括缩放、剪裁、...

# 加载数据集 data_dir =r"C:\Users\HP\Desktop\image\save" patients = os.listdir(data_dir) images = [] for patient in patients: patient_dir = os.path.join(data_dir, patient) imgs = os.listdir(patient_dir) for img_name in imgs: img_path = os.path.join(patient_dir, img_name) img = cv2.imread(img_path) img_gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY) img_gray = cv2.resize(img_gray, (256, 256)) img_gray = img_gray / 255.0 images.append(img_gray) images = np.array(images) images = np.reshape(images, (-1, 256, 256, 1)) 如何修改这段代码使得这段代码可以读取save文件夹下面所有病人的图片

img_gray = cv2.resize(img_gray, (256, 256)) img_gray = img_gray / 255.0 images.append(img_gray) images = np.array(images) images = np.reshape(images, (-1, 256, 256, 1)) 这样可以读取 save ...

翻译代码def resize(): img_path = "Normalresult" save_path = "result" img_names = os.listdir(img_path) # 以列表的形式获取文件夹中的所有文件的名字和格式（例如：0.jpg） for img_name in img_names: img = os.path.join(img_path, img_name) # 将文件的绝对路径与每个文件名字进行拼接，以获取该文件 img = cv2.imread(img) # 读取该文件（图片） # 一是通过设置图像缩放比例，即缩放因子，来对图像进行放大或缩小 res1 = cv2.resize(img, None, fx=2, fy=2, interpolation=cv2.INTER_LINEAR) height, width = img.shape[:2] # 二是直接设置图像的大小，不需要缩放因子 res2 = cv2.resize(img, (int(0.8 * width), int(0.8 * height)), interpolation=cv2.INTER_AREA) dir_name1 = ''.join(random.sample(string.ascii_letters + string.digits, 8)) dir_name2 = ''.join(random.sample(string.ascii_letters + string.digits, 8)) cv2.imwrite(os.path.join(save_path, dir_name1 + '.jpg'), res1) cv2.imwrite(os.path.join(save_path, dir_name2 + '.jpg'), res2) cv2.imwrite(os.path.join(save_path, img_name), img)

然后，代码使用 random 和 string 库中的函数生成随机的文件名，并使用 cv2 库中的 imwrite 函数将缩放后的图像 res1 和 res2 以及原始图像 img 分别保存到指定的保存路径中。最后，代码继续循环处理下一个图片。

def getitem(self, index): path, target = self.imgs[index] with open(path, 'rb') as f: img = Image.open(f).convert('RGB') im_size = img.size img = self.resize(img)，这是什么意思啊

最后，该方法返回一个元组 (img, target)，其中 img 是经过缩放的图片，target 是该图片对应的标签。该方法可以在数据集加载器 DataLoader 中使用，以便对数据集进行迭代操作。例如，可以使用 dataset[index]...

import tkinter as tk from tkinter import filedialog from PIL import ImageTk, Image # 创建窗口 window = tk.Tk() window.title("宝石预测") window.geometry("400x400") # 加载模型参数 para_state_dict = paddle.load("MyCNN") model = MyCNN() model.set_state_dict(para_state_dict) model.eval() # 加载标签字典 label_dict = train_parameters['label_dict'] # 创建预测函数 def predict(): # 获取待预测图片路径 img_path = filedialog.askopenfilename() img = Image.open(img_path) # 预处理图片 img = img.resize((224, 224), Image.BILINEAR) img = np.array(img).astype('float32') img = img.transpose((2, 0, 1)) img = img / 255 img = np.array([img]) # 进行预测 img = paddle.to_tensor(img) out = model(img) label = np.argmax(out.numpy()) result = label_dict[str(label)] # 显示预测结果 result_label.config(text="预测结果：{}".format(result)) # 显示待预测图片 img = ImageTk.PhotoImage(Image.open(img_path).resize((200, 200))) img_label.config(image=img) img_label.image = img # 创建选择图片按钮 select_button = tk.Button(window, text="选择图片", command=predict) select_button.pack(pady=20) # 创建待预测图片区域 img_label = tk.Label(window) img_label.pack() # 创建预测结果区域 result_label = tk.Label(window, font=("Helvetica", 16)) result_label.pack(pady=20) # 进入消息循环 window.mainloop()在此基础上添加预测结果与实际结果对比判断是否预测正确的功能

img = ImageTk.PhotoImage(Image.open(img_path).resize((200, 200))) img_label.config(image=img) img_label.image = img 其中，actual_label 表示待预测图片的实际标签，通过图片路径获取。compare_...

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1、资源项目源码均已通过严格测试验证，保证能够正常运行； 2、项目问题、技术讨论，可以给博主私信或留言，博主看到后会第一时间与您进行沟通； 3、本项目比较适合计算机领域相关的毕业设计课题、课程作业等使用，尤其对于人工智能、计算机科学与技术等相关专业，更为适合； 4、下载使用后，可先查看README.md文件（如有），本项目仅用作交流学习参考，请切勿用于商业用途。

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def __getitem__(self, index): path, target = self.imgs[index] with open(path, 'rb') as f: img = Image.open(f).convert('RGB') im_size = img.size img = self.resize(img)，这是什么意思啊

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def getitem(self, index): path, target = self.imgs[index] with open(path, 'rb') as f: img = Image.open(f).convert('RGB') im_size = img.size img = self.resize(img)，这是什么意思啊