img = cv2.imread(imgpath, cv2.IMREAD_COLOR)什么意思
时间: 2023-11-02 15:53:29 浏览: 46
这是用 OpenCV 库的函数读取一个彩色图像,并将其作为一个 numpy 数组返回。其中 `imgpath` 是图像文件的路径。`cv2.IMREAD_COLOR` 表示以彩色模式读取图像,即读取的图像数组是一个 `(height, width, 3)` 的数组,最后一个维度分别代表蓝色通道、绿色通道和红色通道。
相关问题
def __call__(self): # 图像转换 data_transorform = torchvision.transforms.Compose([ torchvision.transforms.Resize((224, 224)), torchvision.transforms.CenterCrop((224, 224)), torchvision.transforms.ToTensor(), torchvision.transforms.Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225]) ]) img_list = glob.glob(self.img_dir + os.sep + "*.png") for imgpath in img_list: img = cv2.imread(imgpath) new_img = self.expend_img(img) # 补边 img = Image.fromarray(new_img) img = data_transorform(img) # 转换 img = torch.reshape(img, (-1, 3, self.imgsz, self.imgsz)).to(device) # 维度转换[B,C,H,W] pred = self.model(img) _, pred = torch.max(pred, 1) outputs = self.class_name[pred] print("Image path:", imgpath, " pred:", outputs) # 补边为正方形 def expend_img(self, img, fill_pix=122): ''' :param img: 图片数据 :param fill_pix: 填充像素, 默认为灰色,自行更改 :return: ''' h, w = img.shape[:2] # 获取图像的宽高 if h >= w: # 左右填充 padd_width = int(h - w) // 2 padd_h, padd_b, padd_l, padd_r = 0, 0, padd_width, padd_width # 获取上下左右四个方向需要填充的像素 elif h < w: # 上下填充 padd_high = int(w - h) // 2 padd_h, padd_b, padd_l, padd_r = padd_high, padd_high, 0, 0 new_img = cv2.copyMakeBorder(img, padd_h, padd_b, padd_l, padd_r, borderType=cv2.BORDER_CONSTANT, value=[fill_pix, fill_pix, fill_pix]) return new_img if __name__ == '__main__': opt = parser_opt() test_img = Test_model(opt) test_img()
这段代码是一个使用PyTorch实现的图像分类模型的测试程序。主要实现了以下功能:
1.读取指定目录下的所有png格式图像文件。
2.对读取到的图像进行补边操作,使其变为正方形。
3.将图像进行预处理,包括图像尺寸的调整、中心裁剪、像素归一化等操作。
4.将处理后的图像输入模型进行分类预测,打印输出预测结果。
其中,模型的具体实现没有在这段代码中给出,可以通过调用Test_model类中的self.model属性来获取模型,该模型需要预先训练好并保存在文件中。
coding=UTF-8 from flask import Flask, render_template, request, send_from_directory from werkzeug.utils import secure_filename from iconflow.model.colorizer import ReferenceBasedColorizer from skimage.feature import canny as get_canny_feature from torchvision import transforms from PIL import Image import os import datetime import torchvision import cv2 import numpy as np import torch import einops transform_Normalize = torchvision.transforms.Compose([ transforms.Normalize(0.5, 1.0)]) ALLOWED_EXTENSIONS = set([‘png’, ‘jpg’, ‘jpeg’]) app = Flask(name) train_model = ReferenceBasedColorizer() basepath = os.path.join( os.path.dirname(file), ‘images’) # 当前文件所在路径 def allowed_file(filename): return ‘.’ in filename and filename.rsplit(‘.’, 1)[1] in ALLOWED_EXTENSIONS def load_model(log_path=‘/mnt/4T/lzq/IconFlowPaper/checkpoints/normal_model.pt’): global train_model state = torch.load(log_path) train_model.load_state_dict(state[‘net’]) @app.route(“/”, methods=[“GET”, “POST”]) def hello(): if request.method == ‘GET’: return render_template(‘upload.html’) @app.route(‘/upload’, methods=[“GET”, “POST”]) def upload_lnk(): if request.method == ‘GET’: return render_template(‘upload.html’) if request.method == ‘POST’: try: file = request.files['uploadimg'] except Exception: return None if file and allowed_file(file.filename): format = "%Y-%m-%dT%H:%M:%S" now = datetime.datetime.utcnow().strftime(format) filename = now + '_' + file.filename filename = secure_filename(filename) basepath = os.path.join( os.path.dirname(file), ‘images’) # 当前文件所在路径 # upload_path = os.path.join(basepath,secure_filename(f.filename)) file.save(os.path.join(basepath, filename)) else: filename = None return filename @app.route(‘/download/string:filename’, methods=[‘GET’]) def download(filename): if request.method == “GET”: if os.path.isfile(os.path.join(basepath, filename)): return send_from_directory(basepath, filename, as_attachment=True) pass def get_contour(img): x = np.array(img) canny = 0 for layer in np.rollaxis(x, -1): canny |= get_canny_feature(layer, 0) canny = canny.astype(np.uint8) * 255 kernel = np.array([ [0, 1, 1, 1, 0], [1, 1, 1, 1, 1], [1, 1, 1, 1, 1], [1, 1, 1, 1, 1], [0, 1, 1, 1, 0], ], dtype=np.uint8) canny = cv2.dilate(canny, kernel) # canny = Image.fromarray(canny) return canny @app.route(‘/embedding//’, methods=[“GET”, “POST”]) def icontran(img, reference): global train_model if request.method == ‘POST’: imgPath = os.path.join(basepath, img) referencePath = os.path.join(basepath, reference) img = cv2.imread(imgPath) if img is None or img.size <= 0: return None contour = get_contour(img).astype(np.float32).copy() contour = 255 - contour reference = cv2.imread(referencePath).astype(np.float32) reference = cv2.cvtColor(reference, cv2.COLOR_BGR2RGB) reference = transform_Normalize(torch.from_numpy(reference).permute(2, 0, 1).unsqueeze(0).float()/ 255.0) contour = transform_Normalize(torch.from_numpy(contour).unsqueeze(0).unsqueeze(0).float()/ 255.0) train_model.eval() transfer = train_model(contour, reference) transfer = transfer.squeeze(0) transfer = (transfer + 0.5).clamp(0, 1).mul_(255).permute(1, 2, 0).type(torch.uint8).numpy() transfer = transfer.numpy() cv2.imwrite(imgPath, transfer) return basepath # success if name == “main”: load_model() app.run(host=‘10.21.16.144’, port=9999, debug=True) 用puthon写一个调用这个服务器的gui
这是一段 Python 代码,它使用 Flask 框架来创建一个网站应用。它还导入了一些需要使用的库,如 werkzeug、numpy、torch 等。该代码可以对图片进行一些处理,如调整亮度、色彩等。其中包括一个可以将黑白图片变成彩色图片的算法 train_model。同时,代码中使用了一些图像处理的函数和变换,如 canny 算法和 einops。最后,它可以将处理后的图片保存在指定的文件夹中,并在网页中展示出来。