Hochschulprojekte/CG2_Tasks
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[TASK] Closer than ever"

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This commit is contained in:
Jan Philipp Timme 2016-01-08 17:20:44 +01:00
parent b1e5a69464
commit cc78822dfe
2 changed files with 38 additions and 15 deletions
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51
hough_machine.cpp
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@ -140,22 +140,44 @@ class HoughMachine {
double theta = lines[i].theta;
int r = lines[i].r;
int quadrant = floor(theta / pi_half);
theta = theta - quadrant * pi_half;
std::cout << "Top " << i << ": " << lines[i].value << ", r: " << r << ", theta: " << theta << " quadrand: " << quadrant;
int x_inter = r / cos(theta);
int y_inter = r / cos(pi_half - theta);
//if(quadrant % 2 == 1) x_inter *= -1;
//if(quadrant > 2) y_inter *= -1;
//double x_factor = (this->x_center + x_inter) / x_inter;
//double y_factor = (this->y_center + y_inter) / y_inter;
//x_inter *= x_factor;
//y_inter *= y_factor;
int x1 = 0; int x2 = 0; int y1 = 0; int y2 = 0;
std::cout << " x: " << x_inter << ", y: " << y_inter << std::endl;
x1 = 0; y1 = y_inter;
x2 = x_inter; y2 = 0;
this->otherBresenham(x1, y1, x2, y2);
// cos(pi/8) -sin(pi/8)
// sin(pi/8) cos(pi/8)
// Do matrix multiplication
// Turn r into a x/y vector
double vec_x = r * cos(theta) + 0 * -sin(theta);
double vec_y = r * sin(theta) + 0 * cos(theta);
// find point in image
int x = vec_x + this->x_center;
int y = vec_y + this->y_center;
std::cout << " vec x: " << x << ", vec y: " << y << std::endl;
// create vector for line
double vec_target_x = vec_y;
double vec_target_y = -vec_x;
// normalize it
double vec_target_len = sqrt(pow(vec_target_x, 2) + pow(vec_target_y, 2));
vec_target_x = vec_target_x / vec_target_len;
vec_target_y = vec_target_y / vec_target_len;
// find first out of bounds condition
double i = x;
double j = y;
while(i < this->working_copy->width() && i > 0 && j < this->working_copy->height() && j > 0) {
i += vec_target_x;
j += vec_target_y;
}
int x1 = i;
int y1 = j;
i = x;
j = y;
while(i < this->working_copy->width() && i > 0 && j < this->working_copy->height() && j > 0) {
i -= vec_target_x;
j -= vec_target_y;
}
int x2 = i;
int y2 = j;
// TODO: Draw the lines
this->otherBresenham(x1, y1, x2, y2);
}
};
@ -174,6 +196,7 @@ class HoughMachine {
int our_color = QColor::fromRgb(0, 255, 0).rgb();
if(color == 0) color = our_color;
//std::cout << " --> SET (" << x << ", " << y << ")" << std::endl;
if(x < 0 || y < 0 || x > this->working_copy->width() || y > this->working_copy->height()) return;
this->working_copy->getImage()->setPixel(x, y, color);
};

2
imageviewer-qt4.cpp
View File

@ -792,7 +792,7 @@ void ImageViewer::runHoughTransformation(void) {
hm->setMatchingThreshold(threshold);
//hm->run(256, 256);
hm->run(300, 300);
hm->drawLines(40);
hm->drawLines(70);
delete hm;
updateImageDisplay();
}