"Exercise 6.6" cvlaplace Mass and edge detection

Outline

Topic Requirements

Program code

Result picture

Homilies Miao DAO

Title Requirements:

Find and load a frontal face graph, the eyes are open, and take up most of the image area, write code to find the eyes of the pupil

A Laplace operator "like" a central highlight in the darkness, the pupil is just the opposite, with a large enough Laplace operator to convert and convolution

Program code:

1 //OpenCVExerciseTesting.cpp: Defines the entry point of the console application. 2 //3 //d:\\work\\work_programming\\source\\image\\lena.jpg4 5 6#include"stdafx.h"7#include <cv.h>8#include 9#include <iostream>Ten  One#include <opencv2/legacy/legacy.hpp> A //#pragma comment (lib, "Opencv_legacy2411.lib") -  - using namespaceCV; the using namespacestd; -  - //function declaration---->-->--->-->--->-->--->// -  +  - //<--<--<--<--<--<--<--<--<--Function Declaration// +  A int_tmain (intARGC, _tchar*argv[]) at { -     Const Char* Soutcefile ="d:\\work\\work_programming\\source\\image\\opencvexerciseimage\\ the 6th chapter \ \ pupil. jpg"; -Iplimage * Image_resource =cvloadimage (Soutcefile, cv_load_image_grayscale); - assert (Image_resource); -  -Cvsize image_size = cvsize (Image_resource->width, image_resource->height); in  -Cvnamedwindow ("Original Image", cv_window_autosize); toCvnamedwindow ("Topic _a", cv_window_autosize); +  -Cvshowimage ("Original Image", Image_resource); the  *     //---------------------------A:--------------------------------/: $ Panax NotoginsengIplimage * image_result_a = Cvcreateimage (image_size, ipl_depth_64f, image_resource->nchannels); - Cvzero (image_result_a); the  +Cvlaplace (Image_resource, Image_result_a, +); A  theCvsave ("Image_result_a.xml", image_result_a); +  -Iplimage * image_8u_toshow = Cvcreateimage (image_size, ipl_depth_8u, image_resource->nchannels); $ cvconvertscaleabs (image_result_a, image_8u_toshow); $  -Cvshowimage ("Topic _a", image_8u_toshow); -  the     //---------------------------A:--------------------------------/.  - WuyiCvwaitkey (0); the  -Cvreleaseimage (&image_resource); WuCvreleaseimage (&image_result_a); -  AboutCvdestroywindow ("Original Image"); $Cvdestroywindow ("Topic _a"); -  -     return 0; -}

Result Picture:

If you change a picture, replace it with the following code:

    Const Char " d:\\work\\work_programming\\source\\image\\opencvexerciseimage\\ the 6th chapter \ \ eyes. jpg " ; /// .......      ); 

Homilies Miao DAO:

A common application of ① Laplace operators is to detect "clumps", edge detection

The ② source image can be either a 8-bit unsigned image or a 32 floating-point image, but the target image must be a 16-bit (signed) or 32-bit floating-point image.

"Exercise 6.6" cvlaplace Mass and edge detection