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我在互联网上搜索了一半，询问Fisherfaces:：train（）在OpenCV中是如何工作的。我得到了实现这个方法的源代码，我理解它。但是，我不明白： 什么时候需要模型的机器学习？ Here is implementation of the method

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I am learning OpenCV through Python v3.8.5 since last few days, got stuck in CascadeClassifier on Facedetection. Following the same code as the tutor : https://www.youtube.com/watch?v=LopYA64KmdE Timestamp: 08:40 I have the image and haarcascade_frontalfac...

I am using Python to communicate with Arduino. The python code uses OpenCV and sends some data to the Arduino. import cv2 import numpy as np import serial import time arduino = serial.Serial('COM3', 9600) time.sleep(2) print("Connection to arduino...") ...

EDIT: updated post. Minimum reproducible example code included, with images that produce the error mentioned in this post. I'm new and unexperienced with openCV. I don't have a deep understanding of the openCV data structures, or what data structures are r...

这是一个相当抽象的问题，不一定附加到语言/模块。很抱歉没有具体的细节。 我正在使用OpenCV用Python（为我的生物实验室工作）编写一个对象跟踪程序。到目前为止，我正在将显微镜下的视频转换成帧，然后检测周围游动的生物体。 视频中有很多类似这样的错误： 我已经成功地找到了x，y路径的方法来勾勒这些。如果成功，它看起来是这样的（其中x，y路径是绿色的边界）： 然而，我经常得到x，y路径，看起来更像这样： 如您所见，x，y路径包含了蠕虫的大部分但不是所有的边。我把这条不合适的路径称为“边缘遮罩”。我需要...

正如你所看到的，我想用opencv在pycharm中为我的人脸检测项目收集图片，但是我在错误行10和linhe27中遇到了问题。

我试图在我的Rasberry Pi上安装OpenCV，但是当我运行下面的命令时，我得到了一些错误。 pip install opencv-contrib-python 结果： Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple Collecting opencv-contrib-python Using cached opencv-contrib-python-4.5.1.48.tar.gz (148....

我已经创建了一个python代码，它可以找到在大多数图像上运行良好的轮廓。 我应用高斯模糊，大津阈值，和形态学侵蚀的图像，以找到轮廓。 结果如下： 但是，有些图像存在以下问题： 在我看来，有些图像没有清晰的边界，线丢失时高斯模糊（或大津阈值）应用。 因此，我试图找到一些东西来代替高斯模糊（或大津阈值）。 我试过很多东西，但还不知道怎么解决。 请给我一些建议。 这是我的密码： # Image Read and Resizing source_image = cv.imread(image_path) co...

我在macosx上运行python3.6.10，以前我可以毫无问题地运行openCV的SIFT，但是现在我遇到了一个分割错误。我用示例数据重新创建了下面的问题。有人知道这个错误吗？ import cv2 from skimage import data cv2.__version__ Out[8]: '3.4.2' image = data.astronaut() sift = cv2.xfeatures2d.SIFT_create() kp1, des1 = sift.detectAndCompute...

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I am using the code to get the skeleton of an object from this article: http://felix.abecassis.me/2011/09/opencv-morphological-skeleton/ 代码如下： Mat img; img = imread("C:\\mel.bmp"); cv::threshold(img, img, 127, 255, cv::THRESH_BINARY); cv::Mat skel(img.siz...

我在其他问题中看到如何减去三通道矩阵，但我从C++中的OpenCV开始，我的问题是，我想，对于那些知道的人来说，更容易。 How can I subtract one Matrix from another in OpenCV, element by element... "by hand"? Because I have tried using the functions that supposedly do this, like subtract(mat, mat2, result) but it is...

我有两张图片： 图像1： 图像2： I want to crop Image2 in the same manner as Image1. So if I read all the document of my folder then script should automatically crop the image in the same manner as in Image1. I am using the below code for cropping. image = cv2.imread(p...

我试着用aruco和opencv与Unity做一些AR实验。 Im getting the camera pose and the position of two corners of an aruco marker. Now i want to place two axis on those two corners, but the result is this: 如您所见，两个轴的中心都位于两个下角，但它们的位置似乎非常差。 我正在采取措施和其他事情，以确保坐标是好的，所以我想问题可以是截锥矩阵，字段...

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I want to use pytesseract to read digits from images. The images look as follows: The digits are dotted and in order to be able to use pytesseract, I need black connected digits on a white background. To do so, I thought about using erode and dilate as p...