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Zadanie 02 - Podstawowe operacje punktowe

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This commit is contained in:
Sebastian Spaloniak 2020-03-29 23:27:04 +02:00
parent 8acd5f738c
commit a957e224f7
2 changed files with 74 additions and 9 deletions
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29
lpo-projekt-v2/src/core/transformations/conversion_grayscale.cpp
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@ -12,8 +12,6 @@ ConversionGrayscale::ConversionGrayscale(PNM* img, ImageViewer* iv) :
PNM* ConversionGrayscale::transform() PNM* ConversionGrayscale::transform()
{ {
qDebug() << Q_FUNC_INFO << "Not implemented yet!";
int width = image->width(); int width = image->width();
int height = image->height(); int height = image->height();
@ -21,11 +19,32 @@ PNM* ConversionGrayscale::transform()
if (image->format() == QImage::Format_Mono) if (image->format() == QImage::Format_Mono)
{ {
// Iterate over image space
for (int x = 0; x < width; x++)
for (int y = 0; y < height; y++)
{
QColor color = QColor::fromRgb(image->pixel(x, y)); // Getting the pixel(x,y) value
if (color == Qt::black) {
newImage->setPixel(x, y, PIXEL_VAL_MAX);
}
if (color == Qt::white) {
newImage->setPixel(x, y, PIXEL_VAL_MIN);
}
}
} }
else // if (image->format() == QImage::Format_RGB32) else
{ {
// Iterate over image space
for (int x = 0; x < width; x++)
for (int y = 0; y < height; y++)
{
QRgb pixel = image->pixel(x, y); // Getting the pixel(x,y) value
int sum = 0;
sum += qRed(pixel) * 0.3;
sum += qGreen(pixel) * 0.6;
sum += qBlue(pixel) * 0.1;
newImage->setPixel(x, y, QColor(sum, sum, sum).rgb());
}
} }
return newImage; return newImage;

54
lpo-projekt-v2/src/core/transformations/correction.cpp
View File

@ -1,4 +1,5 @@
#include "correction.h" #include "correction.h"
#include <math.h>
Correction::Correction(PNM* img) : Correction::Correction(PNM* img) :
Transformation(img) Transformation(img)
@ -10,18 +11,63 @@ Correction::Correction(PNM* img, ImageViewer* iv) :
{ {
} }
float transformValue(int value, float shift, float factor, float gamma) {
float val = pow(((value + shift) * factor), gamma);
return val > 255 ? 255 : val;
}
PNM* Correction::transform() PNM* Correction::transform()
{ {
float shift = getParameter("shift").toFloat(); float shift = getParameter("shift").toFloat();
float factor = getParameter("factor").toFloat(); float factor = getParameter("factor").toFloat();
float gamma = getParameter("gamma").toFloat(); float gamma = getParameter("gamma").toFloat();
int width = image->width(); int width = image->width();
int height = image->height(); int height = image->height();
PNM* newImage = new PNM(width, height, image->format()); PNM* newImage = new PNM(width, height, image->format());
qDebug() << Q_FUNC_INFO << "Not implemented yet!"; float values[256];
for (int i = 0; i < 255; i++) {
values[i] = i;
}
// Iterate over image space
for (int x = 0; x < width; x++)
for (int y = 0; y < height; y++)
{
QRgb pixel = image->pixel(x, y); // Getting the pixel(x,y) value
int r = qRed(pixel); // Get the 0-255 value of the R channel
int g = qGreen(pixel); // Get the 0-255 value of the G channel
int b = qBlue(pixel); // Get the 0-255 value of the B channel
if (values[r] != r) {
r = values[r];
}
else {
values[r] = transformValue(r, shift, factor, gamma);
}
if (values[g] != g) {
g = values[g];
}
else {
values[g] = transformValue(g, shift, factor, gamma);
}
if (values[b] != b) {
b = values[b];
}
else {
values[b] = transformValue(b, shift, factor, gamma);
}
QColor newPixel = QColor(r, g, b);
newImage->setPixel(x, y, newPixel.rgb());
}
return newImage; return newImage;
} }