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A Java based Neuron Modeling framework
package model;
import model.MARK_II.VisionCell;
import model.util.BoundingBox;
import model.util.Point3D;
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.io.IOException;
/**
* @author Quinn Liu ([email protected])
* @version June 30, 2014
*/
public class ImageViewer {
private Image BMPImage;
private int[][] int2DImage;
private Retina retina;
private BoundingBox boxRetinaIsStuckIn;
private Point3D retinaPositionWithinBox;
/**
* The initial position of the retina is set at the max depth and in the middle of the
* image to allow it to see the entire image.
*
* @param BMPFileName
* @param retina
* @throws IOException
*/
public ImageViewer(String BMPFileName, Retina retina)
throws IOException {
this.BMPImage = ImageIO.read(getClass().getResource(BMPFileName));
//ReadImage readImage = new ReadImage();
this.int2DImage = this.readBMPImage(BMPFileName);
this.retina = retina;
int numberOfRowPixels = this.int2DImage.length;
int numberOfColumnPixels = this.int2DImage[0].length;
double longerEntireImageDimension = Math.max(numberOfRowPixels, numberOfColumnPixels);
double distanceZAwayFromImageToSeeEntireImage = longerEntireImageDimension / 2;
int height = numberOfRowPixels; // Y-Axis
int width = numberOfColumnPixels; // X-Axis
int depth = (int) distanceZAwayFromImageToSeeEntireImage; // Z-Axis
this.boxRetinaIsStuckIn = new BoundingBox(width, height, depth);
this.retinaPositionWithinBox = new Point3D(width/2, height/2, depth);
}
/**
* @param newRetinaPosition If the new position is not within the box the retina is stuck in
* it is moved to be inside it.
* @return What the retina sees.
*/
public int[][] saccadeRetinaToNewPositionAndGetWhatItSees(Point3D newRetinaPosition) throws IOException {
this.moveRetinaToNewPositionInsideOfBoundingBox(newRetinaPosition);
return this.updateRetinaWithSeenPartOfImageBasedOnCurrentPosition();
}
public BoundingBox getBoxRetinaIsStuckIn() {
return this.boxRetinaIsStuckIn;
}
void moveRetinaToNewPositionInsideOfBoundingBox(Point3D newRetinaPosition) {
double retinaX = newRetinaPosition.getX();
double retinaY = newRetinaPosition.getY();
double retinaZ = newRetinaPosition.getZ();
double boxX = this.boxRetinaIsStuckIn.getWidth();
double boxY = this.boxRetinaIsStuckIn.getHeight();
double boxZ = this.boxRetinaIsStuckIn.getDepth();
if (retinaX < 0) {
this.retinaPositionWithinBox.setX(0);
} else if (retinaX > boxX) {
this.retinaPositionWithinBox.setX(boxX);
} else {
this.retinaPositionWithinBox.setX(retinaX);
}
if (retinaY < 0) {
this.retinaPositionWithinBox.setY(0);
} else if (retinaY > boxY) {
this.retinaPositionWithinBox.setY(boxY);
} else {
this.retinaPositionWithinBox.setY(retinaY);
}
if (retinaZ < 1) { // later in the code we access int numberOfColumns = int2DArray[0].length;
this.retinaPositionWithinBox.setZ(1);
} else if (retinaZ > boxZ) {
this.retinaPositionWithinBox.setZ(boxZ);
} else {
this.retinaPositionWithinBox.setZ(retinaZ);
}
}
int[][] updateRetinaWithSeenPartOfImageBasedOnCurrentPosition() throws IOException {
int[][] seenAreaFromEntireImage = this.seenAreaOfEntireImage();
int[][] seenAreaFittedToRetinaSize = this.resizeSeenAreaToFitRetina(seenAreaFromEntireImage);
this.retina.see2DIntArray(seenAreaFittedToRetinaSize);
return seenAreaFittedToRetinaSize;
}
int[][] seenAreaOfEntireImage() {
double retinaX = this.retinaPositionWithinBox.getX();
double retinaY = this.retinaPositionWithinBox.getY();
double retinaZ = this.retinaPositionWithinBox.getZ();
double topLeftOfSeenX = retinaX - retinaZ;
double topLeftOfSeenY = retinaY - retinaZ;
int numberOfColumnsSeen = (int) retinaZ * 2;
int numberOfRowsSeen = (int) retinaZ * 2;
int[][] seenImageToReturn = new int[numberOfRowsSeen][numberOfColumnsSeen];
int retinaRow = 0;
int retinaColumn = 0;
int rowStart = (int) topLeftOfSeenY;
int rowEnd = rowStart + numberOfRowsSeen;
int columnStart = (int) topLeftOfSeenX;
int columnEnd = columnStart + numberOfColumnsSeen;
for (int row = rowStart; row < rowEnd; row++) {
retinaColumn = 0; // starting on new row
for (int column = columnStart; column < columnEnd; column++) {
if (row < 0 || row >= this.int2DImage.length) {
// row index is out of bounds
} else if (column < 0 || column >= this.int2DImage[0].length) {
// column index is out of bounds
} else {
seenImageToReturn[retinaRow][retinaColumn] = this.int2DImage[row][column];
}
retinaColumn++;
}
retinaRow++;
}
return seenImageToReturn;
}
int[][] resizeSeenAreaToFitRetina(int[][] seenAreaFromEntireImage) throws IOException {
BufferedImage imageToResize = this.convertInt2DArrayToBufferedImage(seenAreaFromEntireImage);
VisionCell[][] visionCells = this.retina.getVisionCells();
int newWidth = visionCells[0].length;
int newHeight = visionCells.length;
BufferedImage resizedImage = this.resize(imageToResize, newWidth, newHeight);
return this.convertBufferedImageToInt2DArray(resizedImage);
}
BufferedImage convertInt2DArrayToBufferedImage(int[][] int2DArray) {
int numberOfRows = int2DArray.length;
int numberOfColumns = int2DArray[0].length;
BufferedImage convertedImage = new BufferedImage(numberOfColumns, numberOfRows, BufferedImage.TYPE_INT_ARGB);
for (int row = 0; row < numberOfRows; row++) {
for (int column = 0; column < numberOfColumns; column++) {
int oneOrZero = int2DArray[row][column];
if (oneOrZero == 1) {
convertedImage.setRGB(column, row, Color.BLACK.getRGB());
} else {
convertedImage.setRGB(column, row, Color.WHITE.getRGB());
}
}
}
return convertedImage;
}
BufferedImage resize(BufferedImage imageToResize, double newWidth, double newHeight) {
BufferedImage resizedImage = null;
if (imageToResize != null) {
resizedImage = new BufferedImage((int) newWidth, (int) newHeight, BufferedImage.TYPE_BYTE_BINARY);
Graphics2D g = resizedImage.createGraphics();
// scaleWidth 0.5 means resizedImage width is half is wide as imageToResize
// scaleHeight 2.0 means resizedImage height is twice as high as imageToResize
double scaleWidth = newWidth / imageToResize.getWidth();
double scaleHeight = newHeight / imageToResize.getHeight();
AffineTransform AT = AffineTransform.getScaleInstance(scaleWidth, scaleHeight);
g.drawRenderedImage(imageToResize, AT);
}
return resizedImage;
}
int[][] convertBufferedImageToInt2DArray(BufferedImage BMPImage) {
int numberOfRows = BMPImage.getHeight();
int numberOfColumns = BMPImage.getWidth();
int[][] imageToReturn = new int[numberOfRows][numberOfColumns];
for (int column = 0; column < numberOfColumns; column++) {
for (int row = 0; row < numberOfRows; row++) {
int RGBcolor = BMPImage.getRGB(column, row); // Image coordinates are mapped differently
if (RGBcolor == Color.BLACK.getRGB()) {
imageToReturn[row][column] = 1;
} else {
imageToReturn[row][column] = 0;
}
}
}
return imageToReturn;
}
int[][] readBMPImage(String BMPImageFileName) throws IOException {
BufferedImage image = ImageIO.read(getClass().getResource(BMPImageFileName));
int numberOfRows = image.getHeight();
int numberOfColumns = image.getWidth();
int[][] imageToReturn = new int[numberOfRows][numberOfColumns];
for (int column = 0; column < numberOfColumns; column++) {
for (int row = 0; row < numberOfRows; row++) {
int RGBcolor = image.getRGB(column, row);
if (RGBcolor == Color.BLACK.getRGB()) {
imageToReturn[row][column] = 1;
} else {
imageToReturn[row][column] = 0;
}
}
}
return imageToReturn;
}
}