computer vision

Premature end of JPEG file opencv

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 …

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Premature end of JPEG file python

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 …

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81 face key point detection

[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 …

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[Python computer vision] Python full stack system (26)

[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 …

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Several classic algorithms of computer vision – least squares + RANSAC + hash algorithm (with DCT) + image clustering algorithm

[]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 …

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(2) solvepnp monocular 3D pose estimation ——– use QR code to solve the camera world coordinates

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) …

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[Computer Vision] Image Enhancement—-Histogram Equalization

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. …

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