Problem description ‘Premature end of JPEG file’ is a warning when using cv2 (python version of opencv ) to read the image, the warning code is located in libjpeg The specific link is https://github.com/opencv/opencv/search?utf8=%E2%9C%93&q=JWRN_JPEG_EOF When debugging the positioning image, it is indeed found that the image is broken. Second, the solution In order to let …
Problem description ‘Premature end of JPEG file’ is a warning when using cv2 (python version of opencv ) to read the image, the warning code is located in libjpeg The specific link is https://github.com/opencv/opencv/search?utf8=%E2%9C%93&q=JWRN_JPEG_EOF When debugging the positioning image, it is indeed found that the image is broken. Second, the solution In order to let …
[Dlib] has been run before , mainly to detect 68 face key points, and the corresponding 68 face key points are as follows: For the use of 68 points of dlib, please refer to: /xingchenbingbuyu/article/details/51116354 The demo mentioned in this article is an extension based on dlib; Project address: https://github.com/codeniko/shape_predictor_81_face_landmarks This project realizes the detection …
[computer vision] Chapter VII Comprehensive Cases First, use OpenCV to achieve image correction 1. Task description When we analyze and detect the target in the image, the target often has a certain angle of inclination, and the images taken under natural conditions are rarely completely flat. Therefore, the process of “righting” the inclined target is …
[Python computer vision] Python full stack system (26) Read More »
computer vision Chapter 5 Image Gradient Processing 1. What is Image Gradient The image gradient calculates the speed at which the image changes. For the edge part of the image, the gray value changes greatly, and the gradient value is also large; on the contrary, for the relatively smooth part of the image, the gray …
[Python computer vision] Python full stack system (25) Read More »
read video import cv2 as cv # Video read and write ''' In OpenCV, we want to read a video, we need to create a VideoCapture object, specify the video file you want to read 1. Create an object to read the video cap = cv.VideoCapture(filepath) parameter : filepath : video file path (can also …
[]Several classic algorithms of [computer vision] Table of contents Several classic algorithms of computer vision 1. Least Squares (Finding Linear Regression Functions) 2. RANSAC (model known, parameters unknown) 2.1 The difference between RANSAC and the least squares method 2.2 Steps of RANSAC Algorithm 2.3 Parameter determination of RANSAC 2.4 Application of RANSAC 2.5 Advantages and …
In this paper, the camera captures the QR code to obtain the world coordinate and image coordinate point pair, and solves the camera attitude or the attitude of the target (QR code). The article is reprinted from: /cocoaqin/article/details/77848588 Blogger code: https://github.com/xukeqin/PnP Implementation platform: IDE: visual studio 2013 using library: Eigen opencv2.4.9 Documentation version: 1.1 [(1) …
import numpy as np # Define a nms function def soft_nms(dets, thresh=0.3, sigma=0.5): # Only those whose score is greater than thresh can survive. Actual adjustment parameter ''' input: dets : dets is an ndarray of (n, 5), each element of the 0th dimension codes a box: [x1, y1, x2, y2, score] thresh : float …
Personal profile: 📦 Personal homepage: [Zhao Si driver] 🏆 Learning direction: JAVA back-end development 📣 The best time to plant a tree was ten years ago, followed by now! 🧡If you like it, please pay attention, your support is my biggest motivation. Article directory 1. What is image histogram 2. The principle of equalization 3. …
[Computer Vision] Image Enhancement—-Histogram Equalization Read More »