请编写一段基于C++的VS2015程序,实现用pushbutton控制调用opencv实现图片的阈值分割,并在Label中显示出来
时间: 2024-04-15 18:30:16 浏览: 34
以下是一个基于C++的VS2015程序,使用PushButton控制调用OpenCV实现图片的阈值分割,并在Label中显示出来的示例代码:
```cpp
#include <opencv2/opencv.hpp>
#include <Windows.h>
#include <Commctrl.h>
using namespace cv;
HWND g_hButton;
HWND g_hLabel;
HINSTANCE g_hInstance;
// 回调函数,用于处理按钮点击事件
LRESULT CALLBACK WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch (msg)
{
case WM_CREATE:
// 创建PushButton
g_hButton = CreateWindow("BUTTON", "Threshold", WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON,
10, 10, 100, 30, hWnd, NULL, g_hInstance, NULL);
// 创建Label
g_hLabel = CreateWindow("STATIC", NULL, WS_VISIBLE | WS_CHILD | SS_BITMAP,
10, 50, 640, 480, hWnd, NULL, g_hInstance, NULL);
break;
case WM_COMMAND:
if (lParam == (LPARAM)g_hButton)
{
// 读取图片
Mat image = imread("path_to_image.jpg", IMREAD_GRAYSCALE);
// 进行阈值分割
Mat thresholded;
threshold(image, thresholded, 128, 255, THRESH_BINARY);
// 在Label中显示分割结果
HBITMAP hBitmap = CreateBitmap(thresholded.cols, thresholded.rows, 1, 8, thresholded.data);
SendMessage(g_hLabel, STM_SETIMAGE, IMAGE_BITMAP, (LPARAM)hBitmap);
}
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hWnd, msg, wParam, lParam);
}
return 0;
}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
g_hInstance = hInstance;
// 注册窗口类
WNDCLASSEX wcex;
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = WndProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = hInstance;
wcex.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
wcex.lpszMenuName = NULL;
wcex.lpszClassName = "ThresholdApp";
wcex.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
if (!RegisterClassEx(&wcex))
{
MessageBox(NULL, "Window Registration Failed!", "Error", MB_ICONEXCLAMATION | MB_OK);
return 0;
}
// 创建窗口
HWND hWnd = CreateWindowEx(0, "ThresholdApp", "Threshold Application", WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT, 680, 600, NULL, NULL, hInstance, NULL);
if (hWnd == NULL)
{
MessageBox(NULL, "Window Creation Failed!", "Error", MB_ICONEXCLAMATION | MB_OK);
return 0;
}
// 显示窗口
ShowWindow(hWnd, nCmdShow);
UpdateWindow(hWnd);
// 消息循环
MSG msg;
while (GetMessage(&msg, NULL, 0, 0) > 0)
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return (int)msg.wParam;
}
```
请将代码中的`"path_to_image.jpg"`替换为实际的图片路径。该程序会创建一个窗口,其中包含一个名为"Threshold"的PushButton和一个用于显示分割结果的Label。点击按钮后,会读取图片并进行阈值分割,然后在Label中显示分割结果。
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