LiangjunFeng / Implement-OpenCV

Using OpenCV process image

Implement-OpenCV

The Repository contains some useful code that implements with OpenCV and C++

I refer to the Authoritative Code,it helps me a lot,and it's also great if you are willing to help me

improve my code,There are more information about the OpenCV on my CSDN BLOG

INTRODUCTION

1.DftAndIdft.cpp

It's a application of DFT and IDFT. Firstly, I trnsfer the picture from time domain to frequency domain

by DFT, And In frequency domain, process all the pixels,lastly,tansfer the picture back to time domain

by IDFE. the original picture I use is the moive,lalaland 's advertisement

There are more details in : detail document about the algorithms

the reslut, source image:

the reslut, Amplitude spectrum:

the reslut, reconstructed image:

the result, Pro Amplitude spectrum:

2.LinearAndNonLinearFilter.cpp

The cpp file contains three normal linear Filteres and two nonlinear Filteres ,They are Box Filter\Mean Filter\

GaussianFilter\Median Filter and Bilateral Filter，and meanwhile, I creat Track bar for each of them,we could move the

key to adjust the Filteres' function,the filteres are applied in one picture,another lalaland advertisement,so we could

compare their function

the result, Mean Filter:

the result, Gaussian Filter:

the result, Box Filter:

the result, Median Filter:

the result,Bilateral Filter:

3.DrawConvexHull

The code draw the Convex Hull of the 'xiaoxin's photo',I like the cartoon very much, so, I make the result a gif.

the code is easy but efficient, it's still welcome to help me improve it, and you could also add some interesting

elements to it,the code uses convexHull function and findContour function mainly.

There are more details in : detail document about the algorithms

the resalut:

4.EdgeDetected

Here contains Three different kinds of methods for edge detected,They are Canny/Sobel/Scharr,the pictue I use

is Two Horses's picture that I download from Baidu,Put the different effect results here to compare the differences between them

There are more details in : detail document about the algorithms

the result, Canny:

the result, Sobel:

the result, Scharr:

5.RotateAndZoom

Here I use a planet picture implement the rotation and zooming,Firstly,I use the zooming function,and follow by the

rotate funtion,I show the output all in the code, but I just put the last result here, if you are interesting in the middle

process,you colud run the code in the repositry by yourself

the resutlt, zoom and rotate:

6.HarrisCorner

The HurrisCorner is a useful and interesting algrithom, I use the function in OpenCV to implement on a "church picture"

and really, the function has a good effect

the result,HurrisCorner:

7.CircleAndRectObj

The code could use circles and rectangles to wraps the obejects' contours in the "world map",I use the findcontour and

some other functions in the OpenCV

the result,CircleAndRectObj:

CONTRIBUTOR

---

                                    CANTACT CARD
                           Author:     LiangjunFeng
                           Blog:       http://my.csdn.net/Liangjun_Feng
                           E-mail:     [e-mail]
                           School:     zhejiang University
                           Begin from: 2017/8

---