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Copy pathImageDisplay.java
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489 lines (450 loc) · 21 KB
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import java.awt.*;
import java.awt.image.*;
import java.io.*;
import javax.swing.*;
public class ImageDisplay {
JFrame frame;
JLabel lbIm1;
JLabel lbIm2;
BufferedImage imageOne;
BufferedImage decodedImage;
int width = 512;
int height = 512;
int scaledHeight = height / 8;
int scaledWidth = width / 8;
int[][][] originalimage;
int[][][] dctValues;
int[][][] deQuantizeValues;
double[][][][] cos;
int[][][] finalimage;
double c1 = 0.25;
double c2 = 0.25 * 0.707;
double c3 = 0.125;
int calpow;
public void readImageRGB(int width, int height, String imagePath, BufferedImage image) {
try {
int frameLength = width * height * 3;
originalimage = new int[3][height][width];
File file = new File(imagePath);
RandomAccessFile raf = new RandomAccessFile(file, "r");
raf.seek(0);
long len = frameLength;
byte[] bytes = new byte[(int) len];
raf.read(bytes);
int ind = 0;
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
byte r = bytes[ind];
byte g = bytes[ind + height * width];
byte b = bytes[ind + height * width * 2];
originalimage[0][y][x] = r & 0xff;
originalimage[1][y][x] = g & 0xff;
originalimage[2][y][x] = b & 0xff;
int pix = 0xff000000 | ((r & 0xff) << 16) | ((g & 0xff) << 8) | (b & 0xff);
image.setRGB(x, y, pix);
ind++;
}
}
raf.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public void encodeDCT() {
cos = new double[8][8][8][8];
double pi = Math.PI;
dctValues = new int[3][height][width];
for (int x = 0; x < 8; x++) {
int x2 = 2 * x + 1;
for (int y = 0; y < 8; y++) {
for (int a = 0; a < 8; a++) {
int a2 = 2 * a + 1;
for (int b = 0; b < 8; b++) {
cos[y][b][x][a] = Math.cos(pi * x2 * y * 0.0625) * Math.cos(pi * a2 * b * 0.0625);
}
}
}
}
for (int ch = 0; ch < 3; ch++) {
for (int y = 0; y < scaledHeight; y++) {
for (int x = 0; x < scaledWidth; x++) {
double c;
for (int v = 0; v < 8; v++) {
for (int u = 0; u < 8; u++) {
double sumDCT = 0;
if (u != 0 && v != 0)
c = c1;
else if ((u == 0 && v != 0) || (u != 0 && v == 0))
c = c2;
else
c = c3;
for (int j = 0; j < 8; j++) {
for (int i = 0; i < 8; i++) {
// DCT
sumDCT += originalimage[ch][j + y * 8][i + x * 8] * cos[v][u][j][i];
}
}
// quantization
dctValues[ch][v + y * 8][u + x * 8] = (int)(sumDCT * c / calpow);
}
}
}
}
}
}
public void iDCTBaselineMode(int latency, BufferedImage image) {
deQuantize();
int flag = 1;
if(latency == 0){
flag = 0;
}
for(int z1=0;z1<scaledHeight;z1++){
for(int z2=0;z2<scaledWidth;z2++){
for (int ch = 0; ch < 3; ch++) {
for (int j = 0; j < 8; j++) {
for (int i = 0; i < 8; i++) {
double sum = 0;
for (int v = 0; v < 8; v++) {
for (int u = 0; u < 8; u++) {
double c;
if (u != 0 && v != 0)
c = c1;
else if ((u == 0 && v != 0) || (u != 0 && v == 0))
c = c2;
else
c = c3;
int dequantizedValue = deQuantizeValues[ch][z1*8 + v][z2*8 + u];
// iDCT
sum += dequantizedValue * cos[v][u][j][i] * c;
}
}
finalimage[ch][z1*8 + j][z2*8 + i] = (int) sum;
// Set the pixel in the image
int rgb = image.getRGB(z2*8 + i, z1*8 + j);
if (ch == 0) {
rgb = (rgb & 0xFF00FFFF) | ((finalimage[ch][z1*8 + j][z2*8 + i] << 16) & 0x00FF0000);
} else if (ch == 1) {
rgb = (rgb & 0xFFFF00FF) | ((finalimage[ch][z1*8 + j][z2*8 + i] << 8) & 0x0000FF00);
} else if (ch == 2) {
rgb = (rgb & 0xFFFFFF00) | (finalimage[ch][z1*8 + j][z2*8 + i] & 0x000000FF);
}
image.setRGB(z2*8 + i, z1*8 + j, rgb);
}
}
}
if(flag == 1){
lbIm2.setIcon(new ImageIcon(image)); // Update image
lbIm2.updateUI(); // Refresh UI
try {
Thread.sleep(latency);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
if(flag == 0){
lbIm2.setIcon(new ImageIcon(image)); // Update image
lbIm2.updateUI();
}
}
public void iDCTProgressiveSpectral(int latency, BufferedImage image) {
deQuantize();
for (int k = 0; k < 64; k++) {
for(int z1=0;z1<scaledHeight;z1++){
for(int z2=0;z2<scaledWidth;z2++){
for (int ch = 0; ch < 3; ch++) {
for (int j = 0; j < 8; j++) {
for (int i = 0; i < 8; i++) {
double sum = 0;
double c;
int check = 0;
int v = 0, u = 0;
boolean goingUp = true;
while (v < 8 && u < 8) {
if (u != 0 && v != 0)
c = c1;
else if ((u == 0 && v != 0) || (u != 0 && v == 0))
c = c2;
else
c = c3;
int dequantizedValue = deQuantizeValues[ch][z1*8 + v][z2*8 + u];
// iDCT
sum += dequantizedValue * cos[v][u][j][i] * c;
if(++check >= k)
break;
// If going up
if (goingUp) {
// If we are at the first row, move right
if (v == 0) {
u++;
goingUp = false;
}
// If we are at the last column, move down
else if (u == 8 - 1) {
v++;
goingUp = false;
}
// Move diagonally up-left
else {
v--;
u++;
}
} else {
// If we are at the last row, move down
if (v == 8 - 1) {
u++;
goingUp = true;
}
// If we are at the first column, move right
else if (u == 0) {
v++;
goingUp = true;
}
// Move diagonally down-right
else {
v++;
u--;
}
}
}
finalimage[ch][z1*8 + j][z2*8 + i] = (int) (sum);
// Set the pixel in the image
int rgb = image.getRGB(z2*8 + i, z1*8 + j);
if (ch == 0) {
rgb = (rgb & 0xFF00FFFF) | ((finalimage[ch][z1*8 + j][z2*8 + i] << 16) & 0x00FF0000);
} else if (ch == 1) {
rgb = (rgb & 0xFFFF00FF) | ((finalimage[ch][z1*8 + j][z2*8 + i] << 8) & 0x0000FF00);
} else if (ch == 2) {
rgb = (rgb & 0xFFFFFF00) | (finalimage[ch][z1*8 + j][z2*8 + i] & 0x000000FF);
}
image.setRGB(z2*8 + i, z1*8 + j, rgb);
}
}
}
}
}
lbIm2.setIcon(new ImageIcon(image)); // Update image
lbIm2.updateUI(); // Refresh UI
try {
Thread.sleep(latency);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
public void iDCTProgressiveSuccessiveBit(int latency, BufferedImage image) {
deQuantize();
int maxBitDepth = getMaxBit();
for (int bit = 1; bit <= maxBitDepth; bit++) {
int shiftAmount = maxBitDepth - bit;
for (int z1 = 0; z1 < scaledHeight; z1++) {
for (int z2 = 0; z2 < scaledWidth; z2++) {
for (int ch = 0; ch < 3; ch++) {
for (int j = 0; j < 8; j++) {
for (int i = 0; i < 8; i++) {
double sum = 0;
for (int v = 0; v < 8; v++) {
for (int u = 0; u < 8; u++) {
double c;
if (u != 0 && v != 0)
c = c1;
else if ((u == 0 && v != 0) || (u != 0 && v == 0))
c = c2;
else
c = c3;
int coefficient = deQuantizeValues[ch][z1 * 8 + v][z2 * 8 + u];
// long coefficientAsLong = (long) coefficient;
// coefficientAsLong = (coefficientAsLong >> shiftAmount) << shiftAmount;
// coefficient = coefficientAsLong;
if(coefficient < 0){
int val = -coefficient;
val = (val >> shiftAmount) << shiftAmount;
coefficient = -val;
}else{
int val = coefficient;
val = (val >> shiftAmount) << shiftAmount;
coefficient = val;
}
sum += coefficient * cos[v][u][j][i] * c;
}
}
finalimage[ch][z1 * 8 + j][z2 * 8 + i] = (int) (sum);
// Set the pixel in the image
int rgb = image.getRGB(z2 * 8 + i, z1 * 8 + j);
if (ch == 0) {
rgb = (rgb & 0xFF00FFFF) | ((finalimage[ch][z1 * 8 + j][z2 * 8 + i] << 16) & 0x00FF0000);
} else if (ch == 1) {
rgb = (rgb & 0xFFFF00FF) | ((finalimage[ch][z1 * 8 + j][z2 * 8 + i] << 8) & 0x0000FF00);
} else if (ch == 2) {
rgb = (rgb & 0xFFFFFF00) | (finalimage[ch][z1 * 8 + j][z2 * 8 + i] & 0x000000FF);
}
image.setRGB(z2 * 8 + i, z1 * 8 + j, rgb);
}
}
}
}
}
lbIm2.setIcon(new ImageIcon(image));
lbIm2.updateUI();
try {
Thread.sleep(latency);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
public int getMaxBit() {
int maxBitDepth = 0;
for (int ch = 0; ch < 3; ch++) {
for (int z1 = 0; z1 < scaledHeight; z1++) {
for (int z2 = 0; z2 < scaledWidth; z2++) {
for (int v = 0; v < 8; v++) {
for (int u = 0; u < 8; u++) {
int coefficient = Math.abs(deQuantizeValues[ch][z1 * 8 + v][z2 * 8 + u]);
int bitDepth = 0;
while (coefficient != 0) {
coefficient >>= 1;
bitDepth++;
}
if (bitDepth > maxBitDepth) {
maxBitDepth = bitDepth;
}
}
}
}
}
}
return maxBitDepth;
}
public void deQuantize() {
deQuantizeValues = new int[3][height][width];
for (int ch = 0; ch < 3; ch++) {
for (int z1 = 0; z1 < scaledHeight; z1++) {
for (int z2 = 0; z2 < scaledWidth; z2++) {
for (int v = 0; v < 8; v++) {
for (int u = 0; u < 8; u++) {
deQuantizeValues[ch][z1 * 8 + v][z2 * 8 + u] = dctValues[ch][z1 * 8 + v][z2 * 8 + u] * calpow;
}
}
}
}
}
}
public void iDCTProgressiveSuccessive32Bit(int latency, BufferedImage image) {
deQuantize();
int maxBitDepth = 32;
for (int bit = 1; bit <= maxBitDepth; bit++) {
int shiftAmount = maxBitDepth - bit;
for (int z1 = 0; z1 < scaledHeight; z1++) {
for (int z2 = 0; z2 < scaledWidth; z2++) {
for (int ch = 0; ch < 3; ch++) {
for (int j = 0; j < 8; j++) {
for (int i = 0; i < 8; i++) {
double sum = 0;
for (int v = 0; v < 8; v++) {
for (int u = 0; u < 8; u++) {
double c;
if (u != 0 && v != 0)
c = c1;
else if ((u == 0 && v != 0) || (u != 0 && v == 0))
c = c2;
else
c = c3;
int coefficient = deQuantizeValues[ch][z1 * 8 + v][z2 * 8 + u];
// long coefficientAsLong = (long) coefficient;
// coefficientAsLong = (coefficientAsLong >> shiftAmount) << shiftAmount;
// coefficient = coefficientAsLong;
if(coefficient < 0){
int val = -coefficient;
val = (val >> shiftAmount) << shiftAmount;
coefficient = -val;
}else{
int val = coefficient;
val = (val >> shiftAmount) << shiftAmount;
coefficient = val;
}
sum += coefficient * cos[v][u][j][i] * c;
}
}
finalimage[ch][z1 * 8 + j][z2 * 8 + i] = (int) (sum);
// Set the pixel in the image
int rgb = image.getRGB(z2 * 8 + i, z1 * 8 + j);
if (ch == 0) {
rgb = (rgb & 0xFF00FFFF) | ((finalimage[ch][z1 * 8 + j][z2 * 8 + i] << 16) & 0x00FF0000);
} else if (ch == 1) {
rgb = (rgb & 0xFFFF00FF) | ((finalimage[ch][z1 * 8 + j][z2 * 8 + i] << 8) & 0x0000FF00);
} else if (ch == 2) {
rgb = (rgb & 0xFFFFFF00) | (finalimage[ch][z1 * 8 + j][z2 * 8 + i] & 0x000000FF);
}
image.setRGB(z2 * 8 + i, z1 * 8 + j, rgb);
}
}
}
}
}
lbIm2.setIcon(new ImageIcon(image));
lbIm2.updateUI();
try {
Thread.sleep(latency);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
public void showIms(String[] args){
// Read in the specified image
imageOne = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
decodedImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
readImageRGB(width, height, args[0], imageOne);
// Initialize frame
JFrame frame = new JFrame();
frame.setLayout(new GridLayout(1, 2)); // Set GridLayout with 1 row and 2 columns
// Display first image
JLabel lbIm1 = new JLabel(new ImageIcon(imageOne));
frame.add(createHeaderPanel("Original Image", lbIm1));
// Display second image
lbIm2 = new JLabel(new ImageIcon(decodedImage));
frame.add(createHeaderPanel("Decoded Image", lbIm2));
frame.pack();
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
finalimage = new int[3][height][width];
int qLevel = Integer.parseInt(args[1]);
int mode = Integer.parseInt(args[2]);
int latency = Integer.parseInt(args[3]);
calpow = (int)Math.pow(2, qLevel);
encodeDCT();
switch (mode) {
case 1:
iDCTBaselineMode(latency, decodedImage);
break;
case 2:
iDCTProgressiveSpectral(latency, decodedImage);
break;
case 3:
iDCTProgressiveSuccessiveBit(latency, decodedImage);
break;
case 4:
iDCTProgressiveSuccessive32Bit(latency, decodedImage);
break;
default:
System.out.println("invalid");
break;
}
}
public static JPanel createHeaderPanel(String headerText, JLabel contentLabel) {
JPanel panel = new JPanel(new BorderLayout());
JLabel headerLabel = new JLabel(headerText);
headerLabel.setHorizontalAlignment(SwingConstants.CENTER);
panel.add(headerLabel, BorderLayout.NORTH);
panel.add(contentLabel, BorderLayout.CENTER);
return panel;
}
public static void main(String[] args) {
ImageDisplay ren = new ImageDisplay();
ren.showIms(args);
}
}