Feature extraction and matching of opencv (2)

Feature extraction and matching of opencv (2) demo: http://download.csdn.net/detail/keen_zuxwang/9852587 RANSAC is the abbreviation of "RANdom SAmple Consensus Random Sample Consistency". It can estimate the parameters of the mathematical model iteratively from a set of observation data containing "outliers". It is an ...

Posted by anfo on Wed, 26 Jun 2019 12:34:15 -0700

Convolution and Pooling of TensorFlow Basic Operations

As mentioned earlier Operation and Significance of Image Convolution And some examples are implemented with filter2D function in OpenCV. The filter 2D function in OpenCV only uses a convolution core to deconvolute a single image matrix. In TensorFlow, the convolution operation is mainly used in the convolution layer of CNN, so the input is no ...

Posted by Gregg on Fri, 21 Jun 2019 16:28:00 -0700

Novice Direction - Assess the quality of New York City's bicycle lanes with street images

Measuring the quality of NYC Bike Lanes through street imagery stay Another article In this article, I will briefly introduce the image processing and computer vision technologies we use for street images. We've also tried to use it Microsoft Custom Visual Products, based on the simple marking of bicycle lane images, quickly generate classif ...

Posted by aesir5 on Sun, 09 Jun 2019 10:59:05 -0700

Why? Can browsers do face detection?

The Shape Detection API has been released for some time, and its main capability is to give the front-end directly available feature detection interface (including barcode, face, text detection). In this paper, we will briefly introduce it and explain the universality of the front-end face detection. (In this paper, we will not talk about arith ...

Posted by BZorch on Wed, 05 Jun 2019 12:21:52 -0700

iOS Black Technology (AVFoundation) Dynamic Face Recognition (II)

iOS Black Technology (AVFoundation) Dynamic Face Recognition (II) In the previous article, we introduced the static face recognition implemented by Core Image. Here we introduce dynamic face recognition, one of the powerful functions of AVFoundation. First, introduce some methods of face recognition. 1. CoreI ...

Posted by upperbid on Sun, 19 May 2019 17:13:08 -0700

python+opencv Practice IV. Image Feature Extraction and Description-30 Harris Corner Detection

targetUnderstanding the concept of Harris corner detection* Learning functions: cv2.cornerHarris(), cv2.cornerSubPix() principle In the last section, we already know a characteristic of corners: they move in any direction and change a lot. Chris_Harris and Mike_Stephens proposed corner detection method as early as 1988 ...

Posted by m00nz00mer on Sat, 18 May 2019 17:21:31 -0700

OpenCV Makes Tencent Slider Verification Code

Preface CrapSlider verification code cracking is a project that has always wanted to do, after all, most websites will use slider verification code, so recently in the spare time to modify the paper to solve this matter. To make the slider verification code, image processing is the first choice, of course, OpenCV-Python! Of course, my OpenCV is ...

Posted by jennatar on Sat, 18 May 2019 02:29:11 -0700

web socket transfers canvas to C++ server opencv image to realize online real-time image processing

A previous visual computing project called receiving the front-end, so there is a strange demand that the front-end opens the camera, and at the same time needs to send the camera data back to the back-end for image processing (such as beauty ah head with an ornament and so on), which involves data coding coupling between the front-end and the ...

Posted by niki77 on Sun, 12 May 2019 00:05:03 -0700

10 Minutes Learn to Use YOLO and Opencv to Achieve Target Detection

Absrtact: This paper introduces the use of opencv and yolo to complete video stream target detection, code interpretation is detailed, with source code, easy to use. In the previous section This paper introduces how to apply YOLO to image target detection. After learning how to detect a single image, we can also use YOLO algorithm to achieve t ...

Posted by sdjensen on Thu, 09 May 2019 16:20:39 -0700

Using OpenCV in Android Studio NDK

Catalog I. Preface Introduction to OpenCV Introduction of OpenCV Module IV. Operating Environment V. Preparations 6. so for compilation VII. Problems and Solutions VIII. EFFECT CHARACTERISTICS I. Preface In order to transplant c++ code to Android and use opencv in c++, it is necessary to call opencv through the bottom layer in An ...

Posted by [-razer-]Blade on Tue, 07 May 2019 04:55:39 -0700