<span style="font-family:Microsoft YaHei;font-size:18px;">#include "stdafx.h"
#include "GeometricTrans.h"
#include "InputScale.h"
#include "Translate.h"
GeometricTrans::GeometricTrans()
{
}
GeometricTrans::~GeometricTrans()
{
}
//图像缩放
BOOL GeometricTrans::ReSize(Mat& InImage,Mat& OutImage,float Scale)
{
CInputScale Cale;
Cale.DoModal();
Scale = Cale.val;
/// 比例缩放
Mat dst; //目标图像指针
Size dst_size; //目标图像尺寸
dst_size.width = InImage.cols * Scale; //目标图像的宽为源图像宽的scale倍
dst_size.height = InImage.rows * Scale; //目标图像的高为源图像高的scale倍
resize(InImage, dst, dst_size); //缩放源图像到目标图像
/// 显示缩放后的图像
namedWindow("NewImage", CV_WINDOW_AUTOSIZE);
imshow("NewImage", dst);
return TRUE;
}
BOOL GeometricTrans::Translate(Mat& InImage, Mat& OutImage, int dx , int dy)
{
CTranslate Tra;
Tra.DoModal();
dx = Tra.m_fx;
dy = Tra.m_fy;
CV_Assert(InImage.depth() == CV_8U);
int rows = InImage.rows;
int cols = InImage.cols;
OutImage.create(rows, cols, InImage.type());
//3通道指针
Vec3b *p;
for (int i = 0; i < rows; i++)
{
p = OutImage.ptr<Vec3b>(i);
for (int j = 0; j < cols; j++)
{
//平移后坐标映射到原图像
int x = j - dx;
int y = i - dy;
//保证映射后的坐标在原图像范围内
if (x >= 0 && y >= 0 && x < cols && y < rows)
{
p[j] = InImage.ptr<Vec3b>(y)[x];
}
}
}
// namedWindow("NewImage", CV_WINDOW_AUTOSIZE);
// imshow("NewImage", OutImage);
return TRUE;
}
//水平镜像
BOOL GeometricTrans::HrizonMirrorTrans(Mat &InImage, Mat &OutImage)
{
CV_Assert(InImage.depth() == CV_8U);
OutImage.create(InImage.rows, InImage.cols, InImage.type());
int rows = InImage.rows;
int cols = InImage.cols;
Vec3b *origal;
Vec3b *p;
for (int i = 0; i < rows; i++)
{
origal = InImage.ptr<Vec3b>(i);
p = OutImage.ptr<Vec3b>(i);
for (int j = 0; j < cols; j++)
{
p[j] = origal[cols - 1 - j];
}
}
// namedWindow("NewImage", CV_WINDOW_AUTOSIZE);
// imshow("NewImage", OutImage);
return TRUE;
}
//垂直镜像
BOOL GeometricTrans::VerticalMirrorTrans(Mat &InImage, Mat &OutImage)
{
CV_Assert(InImage.depth() == CV_8U);
OutImage.create(InImage.rows, InImage.cols, InImage.type());
int rows = InImage.rows;
for (int i = 0; i < rows; i++)
{
//将倒数第i行转化为目标图像第i行
InImage.row(rows - i - 1).copyTo(OutImage.row(i));
}
// namedWindow("NewImage", CV_WINDOW_AUTOSIZE);
// imshow("NewImage", OutImage);
return TRUE;
}
IplImage* GeometricTrans::RotateImage(IplImage* Inimage, int Angle, BOOL bOk)
{
CInputScale Cale;
Cale.DoModal();
Angle = Cale.val;
Angle = abs(Angle) % 180;
if (Angle > 90)
{
Angle = 90 - (Angle % 90);
}
IplImage* dst = NULL;
int width =
(double)(Inimage->height * sin(Angle * CV_PI / 180.0)) +
(double)(Inimage->width * cos(Angle * CV_PI / 180.0)) + 1;
int height =
(double)(Inimage->height * cos(Angle * CV_PI / 180.0)) +
(double)(Inimage->width * sin(Angle * CV_PI / 180.0)) + 1;
int tempLength = sqrt((double)Inimage->width * Inimage->width + Inimage->height * Inimage->height) + 10;
int tempX = (tempLength + 1) / 2 - Inimage->width / 2;
int tempY = (tempLength + 1) / 2 - Inimage->height / 2;
int flag = -1;
dst = cvCreateImage(cvSize(width, height), Inimage->depth, Inimage->nChannels);
cvZero(dst);
IplImage* temp = cvCreateImage(cvSize(tempLength, tempLength), Inimage->depth, Inimage->nChannels);
cvZero(temp);
cvSetImageROI(temp, cvRect(tempX, tempY, Inimage->width, Inimage->height));
cvCopy(Inimage, temp, NULL);
cvResetImageROI(temp);
if (bOk)
flag = 1;
float m[6];
int w = temp->width;
int h = temp->height;
m[0] = (float)cos(flag * Angle * CV_PI / 180.);
m[1] = (float)sin(flag * Angle * CV_PI / 180.);
m[3] = -m[1];
m[4] = m[0];
// 将旋转中心移至图像中间
m[2] = w * 0.5f;
m[5] = h * 0.5f;
//
CvMat M = cvMat(2, 3, CV_32F, m);
cvGetQuadrangleSubPix(temp, dst, &M);
cvReleaseImage(&temp);
return dst;
}</span>