perspective 과제, 변환 여러번 가능하도록 짜기

2025-04-09 12:02:15 +09:00
parent f2f018da0c
commit ecfb02b693
7 changed files with 506 additions and 0 deletions
--- a/ch08/affine/affine.vcxproj
+++ b/ch08/affine/affine.vcxproj
@@ -0,0 +1,143 @@
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+  <ItemGroup>
+    <Image Include="..\..\resources\images\lenna.bmp" />
+    <Image Include="..\..\resources\images\tekapo.bmp" />
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--- a/ch08/affine/affine.vcxproj.filters
+++ b/ch08/affine/affine.vcxproj.filters
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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+      <Extensions>cpp;c;cc;cxx;c++;cppm;ixx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
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+      <Extensions>h;hh;hpp;hxx;h++;hm;inl;inc;ipp;xsd</Extensions>
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+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
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+  <ItemGroup>
+    <ClCompile Include="main.cpp">
+      <Filter>소스 파일</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <Image Include="..\..\resources\images\tekapo.bmp">
+      <Filter>리소스 파일</Filter>
+    </Image>
+    <Image Include="..\..\resources\images\lenna.bmp">
+      <Filter>리소스 파일</Filter>
+    </Image>
+  </ItemGroup>
+</Project>
--- a/ch08/affine/main.cpp
+++ b/ch08/affine/main.cpp
@@ -0,0 +1,137 @@
+#include <iostream>
+#include <array>
+#include <cstdint>
+#include <cmath>
+#include "opencv2/opencv.hpp"
+
+using namespace std;
+using namespace cv;
+
+void affine_flip() {
+	Mat src = imread("../../resources/images/eastsea.bmp");
+
+	imshow("src", src);
+
+	Mat dst;
+	int flipCode[] = { 1, 0, -1 };
+	for (int i = 0; i < 3; i++) {
+		flip(src, dst, flipCode[i]);
+
+		String desc = format("filpcode: %d", flipCode[i]);
+		putText(dst, desc, Point(10, 30), FONT_HERSHEY_SIMPLEX, 1.0, Scalar(255, 0, 0), 1, LINE_AA);
+
+		imshow("dst", dst);
+		waitKey();
+	}
+	destroyAllWindows();
+}
+
+void affine_rotation() {
+	Mat src = imread("../../resources/images/tekapo.bmp");
+
+	Point2f cp(src.cols / 2.f, src.rows / 2.f);
+
+	array<float_t, 6> data = { 0.f, 0.f, cos(20 * 3.141592 / 180), 0.f, 0.f, sin(20 * 3.141592 / 180) };
+	Mat M(2, 3, CV_32F, data.data());
+
+	M += getRotationMatrix2D(cp, 20, 1);
+	Mat dst;
+
+	warpAffine(src, dst, M, Size(src.cols + cos(20 * 3.141592 / 180), src.rows + sin(20 * 3.141592 / 180)));
+
+	imshow("src", src);
+	imshow("dst", dst);
+
+	waitKey();
+	destroyAllWindows();
+}
+
+void affine_scale() {
+	Mat src = imread("../../resources/images/rose.bmp");
+
+	Mat dst1, dst2, dst3, dst4;
+	resize(src, dst1, Size(), 4, 4, INTER_NEAREST);
+	resize(src, dst2, Size(1920, 1280));
+	resize(src, dst3, Size(1920, 1280), 0, 0, INTER_CUBIC);
+	resize(src, dst4, Size(1920 * 2, 1280 * 2), 0, 0, INTER_LANCZOS4);
+
+	imshow("src", src);
+	imshow("dst1", dst1(Rect(400, 500, 400, 400)));
+	imshow("dst2", dst2(Rect(400, 500, 400, 400)));
+	imshow("dst3", dst3(Rect(400, 500, 400, 400)));
+	imshow("dst4", dst4(Rect(800, 1000, 400, 400)));
+
+	waitKey();
+	destroyAllWindows();
+}
+
+void affine_shear() {
+	Mat src = imread("../../resources/images/tekapo.bmp");
+
+	double_t mx = tan(15 * 3.141592 / 180); // x축에 대해 각도만큼 기울이는 코드
+	double_t my = tan(15 * 3.141592 / 180); // y축에 대해 각도만큼 기울이는 코드
+	Mat M = Mat_<double_t>({ 2, 3 }, { 1, mx, 0, my, 1, 0 }), dst;
+
+	warpAffine(src, dst, M, Size(cvRound(src.cols + src.rows * mx), cvRound(src.rows + src.cols * my)));
+
+	imshow("src", src);
+	imshow("dst", dst);
+
+	waitKey();
+	destroyAllWindows();
+}
+
+void affine_translation() {
+	Mat src = imread("../../resources/images/tekapo.bmp");
+
+	Mat M = Mat_<double_t>({ 2, 3 }, { 1, 0, 150, 0, 1, 100 }), dst;
+
+	Size _new_size = src.size();
+	_new_size.width += 150 * 2;
+	_new_size.height += 100 * 2;
+	warpAffine(src, dst, M, _new_size);
+
+	imshow("src", src);
+	imshow("dst", dst);
+
+	waitKey();
+	destroyAllWindows();
+}
+
+void affine_transform() {
+	Mat src = imread("../../resources/images/tekapo.bmp");
+
+	/*Point2f srcPts[3] = {
+		Point2f(0, 0),
+		Point2f(src.cols - 1, 0),
+		Point2f(src.cols - 1, src.rows - 1)
+	}, dstPts[3] = {
+		Point2f(50, 50),
+		Point2f(src.cols - 100, 100),
+		Point2f(src.cols - 50, src.rows - 50)
+	};*/
+
+	array<float_t, 6> data = { 0.8f, 0.f, 30.f, 0.f, 0.8f, 30.f };
+	Mat M(2, 3, CV_32F, data.data());
+	Mat dst = imread("../../resources/images/lenna.bmp");
+
+	warpAffine(src, dst, M, Size(), INTER_LINEAR, BORDER_CONSTANT, Scalar(50, 50, 100));
+
+	vector<Point2f> sP = { Point2f(10, 10), Point2f(30, 70), Point2f(100, 80) }, tP;
+	transform(sP, tP, M);
+	Mat cM = getAffineTransform(sP, tP);
+
+	cout << "Transform matrix M : " << M << endl;
+	cout << "Calculated matrix cM : " << cM << endl;
+
+	imshow("src", src);
+	imshow("dst", dst);
+
+	waitKey();
+	destroyAllWindows();
+}
+
+int main() {
+	affine_rotation();
+	return 0;
+}