From 162187608bbaf1f79d38c88803754c8e58359129 Mon Sep 17 00:00:00 2001
From: Patrick Simianer <p@simianer.de>
Date: Sat, 26 Nov 2016 12:40:34 +0100
Subject: cleanup

---
 shape-detect.cpp | 122 -------------------------------------------------------
 1 file changed, 122 deletions(-)
 delete mode 100644 shape-detect.cpp

(limited to 'shape-detect.cpp')

diff --git a/shape-detect.cpp b/shape-detect.cpp
deleted file mode 100644
index 7d70d08..0000000
--- a/shape-detect.cpp
+++ /dev/null
@@ -1,122 +0,0 @@
-/**
- * Simple shape detector program.
- * It loads an image and tries to find simple shapes (rectangle, triangle, circle, etc) in it.
- * This program is a modified version of `squares.cpp` found in the OpenCV sample dir.
- */
-#include <opencv2/highgui/highgui.hpp>
-#include <opencv2/imgproc/imgproc.hpp>
-#include <cmath>
-#include <iostream>
-
-/**
- * Helper function to find a cosine of angle between vectors
- * from pt0->pt1 and pt0->pt2
- */
-static double angle(cv::Point pt1, cv::Point pt2, cv::Point pt0)
-{
-	double dx1 = pt1.x - pt0.x;
-	double dy1 = pt1.y - pt0.y;
-	double dx2 = pt2.x - pt0.x;
-	double dy2 = pt2.y - pt0.y;
-	return (dx1*dx2 + dy1*dy2)/sqrt((dx1*dx1 + dy1*dy1)*(dx2*dx2 + dy2*dy2) + 1e-10);
-}
-
-/**
- * Helper function to display text in the center of a contour
- */
-void setLabel(cv::Mat& im, const std::string label, std::vector<cv::Point>& contour)
-{
-	int fontface = cv::FONT_HERSHEY_SIMPLEX;
-	double scale = 0.4;
-	int thickness = 1;
-	int baseline = 0;
-
-	cv::Size text = cv::getTextSize(label, fontface, scale, thickness, &baseline);
-	cv::Rect r = cv::boundingRect(contour);
-
-	cv::Point pt(r.x + ((r.width - text.width) / 2), r.y + ((r.height + text.height) / 2));
-	cv::rectangle(im, pt + cv::Point(0, baseline), pt + cv::Point(text.width, -text.height), CV_RGB(255,255,255), CV_FILLED);
-	cv::putText(im, label, pt, fontface, scale, CV_RGB(0,0,0), thickness, 8);
-}
-
-int main()
-{
-	//cv::Mat src = cv::imread("polygon.png");
-	cv::Mat src = cv::imread("assets/basic-shapes-2.png");
-	if (src.empty())
-		return -1;
-
-	// Convert to grayscale
-	cv::Mat gray;
-	cv::cvtColor(src, gray, CV_BGR2GRAY);
-
-	// Use Canny instead of threshold to catch squares with gradient shading
-	cv::Mat bw;
-	cv::Canny(gray, bw, 0, 50, 5);
-
-	// Find contours
-	std::vector<std::vector<cv::Point> > contours;
-	cv::findContours(bw.clone(), contours, CV_RETR_EXTERNAL, CV_CHAIN_APPROX_SIMPLE);
-
-	std::vector<cv::Point> approx;
-	cv::Mat dst = src.clone();
-
-	for (int i = 0; i < contours.size(); i++)
-	{
-		// Approximate contour with accuracy proportional
-		// to the contour perimeter
-		cv::approxPolyDP(cv::Mat(contours[i]), approx, cv::arcLength(cv::Mat(contours[i]), true)*0.02, true);
-
-		// Skip small or non-convex objects 
-		if (std::fabs(cv::contourArea(contours[i])) < 100 || !cv::isContourConvex(approx))
-			continue;
-
-		if (approx.size() == 3)
-		{
-			setLabel(dst, "TRI", contours[i]);    // Triangles
-		}
-		else if (approx.size() >= 4 && approx.size() <= 6)
-		{
-			// Number of vertices of polygonal curve
-			int vtc = approx.size();
-
-			// Get the cosines of all corners
-			std::vector<double> cos;
-			for (int j = 2; j < vtc+1; j++)
-				cos.push_back(angle(approx[j%vtc], approx[j-2], approx[j-1]));
-
-			// Sort ascending the cosine values
-			std::sort(cos.begin(), cos.end());
-
-			// Get the lowest and the highest cosine
-			double mincos = cos.front();
-			double maxcos = cos.back();
-
-			// Use the degrees obtained above and the number of vertices
-			// to determine the shape of the contour
-			if (vtc == 4 && mincos >= -0.1 && maxcos <= 0.3)
-				setLabel(dst, "RECT", contours[i]);
-			else if (vtc == 5 && mincos >= -0.34 && maxcos <= -0.27)
-				setLabel(dst, "PENTA", contours[i]);
-			else if (vtc == 6 && mincos >= -0.55 && maxcos <= -0.45)
-				setLabel(dst, "HEXA", contours[i]);
-		}
-		else
-		{
-			// Detect and label circles
-			double area = cv::contourArea(contours[i]);
-			cv::Rect r = cv::boundingRect(contours[i]);
-			int radius = r.width / 2;
-
-			if (std::abs(1 - ((double)r.width / r.height)) <= 0.2 &&
-			    std::abs(1 - (area / (CV_PI * std::pow(radius, 2)))) <= 0.2)
-				setLabel(dst, "CIR", contours[i]);
-		}
-	}
-
-	cv::imshow("src", src);
-	cv::imshow("dst", dst);
-	cv::waitKey(0);
-	return 0;
-}
-
-- 
cgit v1.2.3