CringeStudios/christmas-tree-scanning
5
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Figured out, that it wasn't "1", but infact "0". Finished implementation

Browse Source 
of getBrightestSpotGrayscale (WARNING ⚠️: untested code). To be done:
Write test cases for all the methods
This commit is contained in:
Paul Schaller 2023-11-14 16:25:34 +01:00
parent 48512ecb93
commit 1f67f51467
2 changed files with 35 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
src/main/java/com/cringe_studios/christmastreescanning/ChristmasTreeScanning.java
View File

@ -4,8 +4,11 @@ import java.awt.Color;
import java.awt.Point; import java.awt.Point;
import java.awt.geom.Point2D; import java.awt.geom.Point2D;
import java.awt.image.BufferedImage; import java.awt.image.BufferedImage;
import java.util.ArrayList;
import java.util.List;
public class ChristmasTreeScanning { public class ChristmasTreeScanning {
//TODO maybe use Point2D.Double as return type, so the Points don't have to be converted to Points2D later down the pipeline during the normalization step
private Point getBrightestSpotGrayscale(BufferedImage grayScaleImage, byte gammaDelta) { private Point getBrightestSpotGrayscale(BufferedImage grayScaleImage, byte gammaDelta) {
int[] imageColors = grayScaleImage.getRGB(0, 0, grayScaleImage.getWidth(), grayScaleImage.getHeight(), null, 0, 0); int[] imageColors = grayScaleImage.getRGB(0, 0, grayScaleImage.getWidth(), grayScaleImage.getHeight(), null, 0, 0);
@ -13,9 +16,26 @@ public class ChristmasTreeScanning {
imageColors[i] &= 0x0000_00FF; // because the image is grayscale, only one component is needed imageColors[i] &= 0x0000_00FF; // because the image is grayscale, only one component is needed
} }
//TODO int brightestValue = 0;
Point brightestSpot = new Point(0, 0); for(int i = 0; i < imageColors.length; i++) {
if(brightestValue < imageColors[i]) {
brightestValue = imageColors[i];
}
}
List<Integer> brightSpots = new ArrayList<Integer>();
for(int i = 0; i < imageColors.length; i++) {
if(imageColors[i] >= brightestValue - gammaDelta) {
brightSpots.add(Integer.valueOf(i));
}
}
//The following line might be incorrect; TODO double check and write a test
Point brightPoints[] = brightSpots.stream().map(s -> new Point(s.intValue() % grayScaleImage.getWidth(), s.intValue() / grayScaleImage.getWidth())).toArray(Point[]::new);
Point brightestSpot = new PointInterpolator(brightPoints).getCenter();
return brightestSpot; return brightestSpot;
} }
@ -68,7 +88,7 @@ public class ChristmasTreeScanning {
} }
public Point getBrightestSpot(BufferedImage image) { public Point getBrightestSpot(BufferedImage image) {
return getBrightestSpot(image, (byte)1); //TODO is it really 1? return getBrightestSpot(image, (byte)0);
} }

18
src/main/java/com/cringe_studios/christmastreescanning/PointInterpolator.java
View File

@ -3,15 +3,21 @@ package com.cringe_studios.christmastreescanning;
import java.awt.Point; import java.awt.Point;
public class PointInterpolator { public class PointInterpolator {
Point a; Point points[];
Point b;
public PointInterpolator(Point na, Point nb) { public PointInterpolator(Point...na) {
a = na; points = na;
b = nb;
} }
Point getCenter() { Point getCenter() {
return new Point( (a.x + b.x) / 2, (a.y + b.y) / 2); int xSum = 0;
int ySum = 0;
for(int i = 0; i < points.length; i++) {
xSum += points[i].x;
ySum += points[i].y;
}
return new Point( xSum / 2, ySum / 2);
} }
} }