License plate number detection using Opencv in python - 2018.10.24

Initial Study Python.Opencv, want to use it as an example to solve license number detection. License plate number detection needs to be divided into four parts: 1. Vehicle image acquisition, 2. License plate positioning, 3. License plate character segmentation and 4. License plate character recognition Baidu found part of license plate recogn ...

Posted on Fri, 29 May 2020 16:59:36 -0700 by flhtc

Read the opencv source code: two iOS interfaces UIImageToMat() and mattoimage()

From: https://www.cnblogs.com/panxiaochun/p/5387743.html This article is originally created by the author and cannot be reproduced without permission. The original text is published by the author in the blog Park: http://www.cnblogs.com/panxiaochun/p/5387743.html Two interfaces are often used in the development of OpenCV based programs under ...

Posted on Fri, 29 May 2020 05:04:49 -0700 by sherry

Python opncv reading and saving pictures

1. OpenCV reads pictures 1.1 brief introduction The method of OpenCV to read the picture is cv2.imread(). The format of the read picture is BGR, which is the opposite of the format of the regular color image (RGB). This must be noted. OpenCV displays the picture in cv2.imshow(), and the format is BGR. Xiaosheng said in this O(∩∩∩&ca ...

Posted on Fri, 08 May 2020 08:08:34 -0700 by warpdesign

Java Opencv implementation of thinning binarization

1. OpenCV is used to verify corrosion and expansion, and only screenshots are needed for recovery. Please refer to Chapter 6 of he Dongjian courseware and source code or other resources for details. 2. Use OpenCV to verify the refinement, only the screenshot reply is needed. Please refer to Chapter 6 of he Dongjian courseware and source code o ...

Posted on Fri, 08 May 2020 07:16:56 -0700 by coool

Face recognition based on self-made training set

Face recognition based on self-made training set Explain 1, Main steps 2, All codes 3, Results Explain This article references from https://www.cnblogs.com/fpzs/p/10550450.html. As before, due to the different versions of Opencv, you need to add the header file "include < Opencv2 / imgproc / types" and m ...

Posted on Tue, 05 May 2020 01:50:07 -0700 by funsutton

Abstract factory pattern

Abstract Factory Pattern is to create other factories around one super factory. This super factory is also called the factory of other factories. This type of design pattern is a creation pattern, which provides the best way to create objects. In the abstract factory pattern, an interface is the factory that is responsible for creating a rela ...

Posted on Mon, 04 May 2020 13:38:27 -0700 by nightdesigns

Edge detection operators: Canny,Sobel,Laplacian

opencv implements some functions of edge detection algorithm, which is Canny(),Sobel(),Laplacian(); Edge operator is a very important method in image recognition and detection. When people recognize objects, they also rely on the edge contour, because in general, the edge features are not affected by the light; the same image only has the edge, ...

Posted on Thu, 30 Apr 2020 20:42:31 -0700 by joecooper

NMS simulation code: from the paper efficient non maximum supply

Efficient non maximum suppression The non maximum suppression mentioned here is a little different from the non maximum suppression mentioned at ordinary times. NMS refers to the application in the detection algorithm, which filters multiple rectangular boxes and filters out the required rectangular boxes. The NMS ment ...

Posted on Fri, 03 Apr 2020 05:31:12 -0700 by cdinca

Analysis of HAL Method Call Flow in OpenCV

There are some so-called HAL(Hardware Acceleration Layer) implementations in OpenCV that seem to be hardware related by name, but they are not. It can be understood that a faster version of OCV implementation is better.What this article does is to find out its implementation or cut into the process to get through the whole function call logic.T ...

Posted on Wed, 18 Mar 2020 11:00:02 -0700 by readourlines

Audio and video series 4: how to get started with ffmpeg for beginners (taking FLV decoding H.264 as an example)

Audio and video series 4: how to get started with ffmpeg for beginners (taking FLV decoding H.264 as an example) install Upper hand Run demo directly Tutorial of ffmpeg Library Learning of professional knowledge Look at the source code of ffmpeg Give an example discover problems Find API documenta ...

Posted on Mon, 16 Mar 2020 23:17:02 -0700 by danrah