// 该函数实现对图像进行二值化处理
public Bitmap gray2Binary(Bitmap graymap) {
// 得到图形的宽度和长度
int width = graymap.getWidth();
int height = graymap.getHeight();
// 创建二值化图像
Bitmap binarymap = null;
binarymap = graymap.copy(Config.ARGB_8888, true);
// 依次循环，对图像的像素进行处理
for (int i = 0; i < width; i++) {
for (int j = 0; j < height; j++) {
// 得到当前像素的值
int col = binarymap.getPixel(i, j);
// 得到alpha通道的值
int alpha = col & 0xFF000000;
// 得到图像的像素RGB的值
int red = (col & 0x00FF0000) >> 16;
int green = (col & 0x0000FF00) >> 8;
int blue = (col & 0x000000FF);
// 用公式X = 0.3×R+0.59×G+0.11×B计算出X代替原来的RGB
int gray = (int) ((float) red * 0.3 + (float) green * 0.59 + (float) blue * 0.11);
// 对图像进行二值化处理
if (gray <= 95) {
gray = 0;
} else {
gray = 255;
}
// 新的ARGB
int newColor = alpha | (gray << 16) | (gray << 8) | gray;
// 设置新图像的当前像素值
binarymap.setPixel(i, j, newColor);
}
}
return binarymap;
}
public void setColorToNumber(Bitmap number, int color) {
for (int col = 0; col < number.getWidth(); col++) {
for (int row = 0; row < number.getHeight(); row++) {
number.setPixel(col, row, (number.getPixel(col, row) & 0xFF000000) | (0x00FFFFFF & color));
}
}
}
public static Bitmap doColorFilter(Bitmap src, double red, double green, double blue) {
// image size
int width = src.getWidth();
int height = src.getHeight();
// create output bitmap
Bitmap bmOut = Bitmap.createBitmap(width, height, src.getConfig());
// color information
int A, R, G, B;
int pixel;
// scan through all pixels
for (int x = 0; x < width; ++x) {
for (int y = 0; y < height; ++y) {
// get pixel color
pixel = src.getPixel(x, y);
// apply filtering on each channel R, G, B
A = Color.alpha(pixel);
R = (int) (Color.red(pixel) * red);
G = (int) (Color.green(pixel) * green);
B = (int) (Color.blue(pixel) * blue);
// set new color pixel to output bitmap
bmOut.setPixel(x, y, Color.argb(A, R, G, B));
}
}
// return final image
return bmOut;
}
public void plot_camera_image_rgb(
Canvas plotCanvas,
byte[] latestRGBImage,
int imageWidth,
int imageHeight,
int width,
int height) {
if (bm == null)
bm = Bitmap.createBitmap(imageWidth / 8, imageHeight / 4, Bitmap.Config.ARGB_8888);
for (int y = 0; y < imageHeight / 4; y++)
for (int x = 0; x < imageWidth / 8; x++) {
int i = (y * 4 * imageWidth + x * 4) * 3;
int rgbColor =
0xFF000000
| (latestRGBImage[i] << 16) & 0xFF0000
| (latestRGBImage[i + 1] << 8) & 0xFF00
| latestRGBImage[i + 2] & 0xFF;
bm.setPixel(x, y, rgbColor);
}
Rect src = new Rect(0, 0, imageHeight / 4, imageWidth / 8);
Rect dst = new Rect(0, 0, width, height);
plotCanvas.rotate(90, width / 2, height / 2);
plotCanvas.drawBitmap(bm, src, dst, null);
}
@Test
public void shouldSetPixel() {
Bitmap bitmap = Bitmap.createBitmap(new int[] {1}, 1, 1, Config.ARGB_8888);
shadowOf(bitmap).setMutable(true);
bitmap.setPixel(0, 0, 2);
assertThat(bitmap.getPixel(0, 0)).isEqualTo(2);
assertThat(shadowOf(bitmap).getCreatedFromColors()).isEqualTo(new int[] {1});
}
@Test
public void shouldSetPixel_allocateOnTheFly() {
Bitmap bitmap = Bitmap.createBitmap(1, 1, Config.ARGB_8888);
shadowOf(bitmap).setMutable(true);
bitmap.setPixel(0, 0, 2);
assertThat(bitmap.getPixel(0, 0)).isEqualTo(2);
assertThat(shadowOf(bitmap).getCreatedFromColors()).isNull();
}
private Bitmap getPreviewBitmap() {
int d = (int) (mDensity * 31); // 30dip
int color = getValue();
Bitmap bm = Bitmap.createBitmap(d, d, Config.ARGB_8888);
int w = bm.getWidth();
int h = bm.getHeight();
int c;
for (int i = 0; i < w; i++) {
for (int j = i; j < h; j++) {
c = (i <= 1 || j <= 1 || i >= w - 2 || j >= h - 2) ? Color.GRAY : color;
bm.setPixel(i, j, c);
if (i != j) {
bm.setPixel(j, i, c);
}
}
}
return bm;
}
void updatePattern() {
// Log.d(LOG, "Filter pattern " + Cfg.Pattern);
int shift = getShift();
int shiftX = shift % Grids.GridSideSize;
int shiftY = shift / Grids.GridSideSize;
for (int i = 0; i < Grids.GridSize; i++) {
int x = (i + shiftX) % Grids.GridSideSize;
int y = ((i / Grids.GridSideSize) + shiftY) % Grids.GridSideSize;
int color = (Grids.Patterns[Cfg.Pattern][i] == 0) ? Color.TRANSPARENT : Color.BLACK;
bmp.setPixel(x, y, color);
}
}
private Bitmap rotateBitmap(Bitmap bitmap) {
Bitmap resBitmap =
Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_8888);
for (int i = 0; i < bitmap.getHeight(); i++) {
for (int j = 0; j < bitmap.getWidth(); j++) {
resBitmap.setPixel(j, i, bitmap.getPixel(i, j));
}
}
return resBitmap;
}
public static Bitmap generate(String data) throws WriterException {
Bitmap bmp;
QRCodeWriter writer = new QRCodeWriter();
BitMatrix bitMatrix = writer.encode(data, BarcodeFormat.QR_CODE, 512, 512);
int width = bitMatrix.getWidth();
int height = bitMatrix.getHeight();
bmp = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
for (int x = 0; x < width; x++) {
for (int y = 0; y < height; y++) {
bmp.setPixel(x, y, bitMatrix.get(x, y) ? Color.BLACK : Color.WHITE);
}
}
return bmp;
}
public void testPngStaysSame() {
Bitmap bitmap1 = mCoverImage.copy(Config.ARGB_8888, true);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
bitmap1.setPixel(1, 1, 0xFFFF0F0F);
assertEquals(0xFFFF0F0F, bitmap1.getPixel(1, 1));
bitmap1.compress(CompressFormat.PNG, 100, bos);
byte[] ba = bos.toByteArray();
Bitmap bitmap2 = BitmapFactory.decodeByteArray(ba, 0, ba.length);
assertEquals(bitmap1.getPixel(1, 1), bitmap2.getPixel(1, 1));
}
private Bitmap mirrorBitmap(Bitmap bitmap) {
Bitmap resBitmap =
Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_8888);
int n = bitmap.getHeight(), m = bitmap.getWidth();
for (int i = 0; i < n / 2; i++) {
for (int j = 0; j < m; j++) {
resBitmap.setPixel(i, j, bitmap.getPixel(n - i - 1, j));
resBitmap.setPixel(n - i - 1, j, bitmap.getPixel(i, j));
}
}
return resBitmap;
}
public void setPixelsRandom(int width, int height) {
Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
for (int x = 0; x < width; x++) {
for (int y = 0; y < height; y++) {
bitmap.setPixel(
x,
y,
Color.rgb(
(int) (255.0 * Math.random()),
(int) (255.0 * Math.random()),
(int) (255.0 * Math.random())));
}
}
setPixels(bitmap);
}
@Override
public Bitmap call(sensor_msgs.Image message) {
Preconditions.checkArgument(message.getEncoding().equals("rgb8"));
Bitmap bitmap =
Bitmap.createBitmap(
(int) message.getWidth(), (int) message.getHeight(), Bitmap.Config.ARGB_8888);
for (int x = 0; x < message.getWidth(); x++) {
for (int y = 0; y < message.getHeight(); y++) {
ChannelBuffer data = message.getData();
byte red = data.getByte((int) (y * message.getStep() + 3 * x));
byte green = data.getByte((int) (y * message.getStep() + 3 * x + 1));
byte blue = data.getByte((int) (y * message.getStep() + 3 * x + 2));
bitmap.setPixel(x, y, Color.argb(255, red & 0xFF, green & 0xFF, blue & 0xFF));
}
}
return bitmap;
}
/**
* Get the internal picture that was used during the OCR. The OCR engine uses a filtered image,
* and not the original. Using this function, one can see why there were problems during OCR.
*
* @param pic_width the picture width
* @param pic_height the picture height
* @return the internal image as a bitmap
*/
public Bitmap GetInternImage(int pic_width, int pic_height) {
// from disk file
Log.v(TAG, "getInternImage w=" + pic_width + " h=" + pic_height);
byte[] tif = null;
try {
tif =
GetBytesFromFile(
new File(Mezzofanti.RESULTS_PATH + "tessinput.tif"), pic_width, pic_height, 1);
} catch (Exception ex) {
Log.v(TAG, "exception: " + ex.toString());
}
if (tif == null) {
Log.v(TAG, "warning: tif is null");
return null;
}
Bitmap bmp2 = null;
try {
bmp2 = Bitmap.createBitmap(pic_width, pic_height, Bitmap.Config.RGB_565);
} catch (Throwable th) {
Log.v(TAG, "throwable: " + th.toString());
return null;
}
int[] pixbuf = new int[8];
for (int h = 0; h < pic_height; h++)
for (int w = 0; w < pic_width; w++) {
if (w % 8 == 0) {
// read 8b -> 8pixels
int pix = tif[258 + (h * pic_width + w) / 8];
// store them in a buffer
for (int i = 0; i < 8; i++) {
pix = pix >> i;
pixbuf[7 - i] = pix & 0x00000001;
if (pixbuf[7 - i] != 0) pixbuf[7 - i] = 0x00ffffff;
}
}
bmp2.setPixel(w, h, pixbuf[w % 8]);
}
return bmp2;
}
// Converts image to grayscale (NEW)
public Bitmap toGrayScale(Bitmap bmpOriginal) {
int width, height;
height = bmpOriginal.getHeight();
width = bmpOriginal.getWidth();
Bitmap bmpGrayscale = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
for (int y = 0; y < height; ++y) {
for (int x = 0; x < width; ++x) {
int color = bmpOriginal.getPixel(x, y);
int r = (color >> 16) & 0xFF;
int g = (color >> 8) & 0xFF;
int b = color & 0xFF;
int gray = (r + g + b) / 3;
color = Color.rgb(gray, gray, gray);
// color = Color.rgb(r/3, g/3, b/3);
bmpGrayscale.setPixel(x, y, color);
}
}
return bmpGrayscale;
}
public Bitmap drawPuddles() {
int numrows = dem.length;
int numcols = dem[0].length;
int[] colorarray = new int[this.pits.pitIdMatrix.length * this.pits.pitIdMatrix[0].length];
Arrays.fill(colorarray, Color.TRANSPARENT);
Bitmap.Config config = Bitmap.Config.ARGB_8888;
Bitmap puddleBitmap = Bitmap.createBitmap(colorarray, numcols, numrows, config);
puddleBitmap = puddleBitmap.copy(config, true);
for (int r = 1; r < numrows - 1; r++) {
for (int c = 1; c < numcols - 1; c++) {
if (r >= numrows - 1 || r <= 0 || c >= numcols - 1 || c <= 0) {
continue;
}
if (originalDem[r][c] < dem[r][c]) {
puddleBitmap.setPixel(numcols - 1 - c, r, Color.BLUE);
}
}
}
return puddleBitmap;
}
public Bitmap generateQR(String text) {
Display display = getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
int width = size.x * 3 / 4;
int height = width;
MultiFormatWriter writer = new MultiFormatWriter();
Hashtable hints = new Hashtable();
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.Q);
BitMatrix matrix = null;
Bitmap bmp = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
try {
matrix = writer.encode(text, BarcodeFormat.QR_CODE, width, height, hints);
} catch (WriterException e) {
return bmp;
}
for (int x = 0; x < width; x++) {
for (int y = 0; y < height; y++) {
bmp.setPixel(x, y, matrix.get(x, y) ? Color.BLACK : Color.WHITE);
}
}
return bmp;
}
public void plot_camera_image(
Canvas plotCanvas, byte[] image, int imageWidth, int imageHeight, int width, int height) {
if (bm == null)
bm = Bitmap.createBitmap(imageWidth / 8, imageHeight / 4, Bitmap.Config.ARGB_8888);
for (int y = 0; y < imageHeight / 4; y++)
for (int x = 0; x < imageWidth / 8; x++) {
int i = (y * 4 * imageWidth + x * 4);
int greyValue = image[i];
int greyColor =
0xFF000000
| (greyValue << 16) & 0xFF0000
| (greyValue << 8) & 0xFF00
| greyValue & 0xFF;
bm.setPixel(x, y, greyColor);
}
// plotCanvas.drawBitmap(bm, 0, 0, null);
Rect src = new Rect(0, 0, imageHeight / 4, imageWidth / 8);
Rect dst = new Rect(0, 0, width, height);
plotCanvas.rotate(90, width / 2, height / 2);
plotCanvas.drawBitmap(bm, src, dst, null);
}
@Test(expected = IllegalStateException.class)
public void shouldThrowExceptionForSetPixelOnImmutableBitmap() {
Bitmap bitmap = Bitmap.createBitmap(new int[] {1}, 1, 1, Config.ARGB_8888);
bitmap.setPixel(0, 0, 2);
}
public void takeImageData(int[] array, int clientid, int datachunk) throws BusException {
if (clientid != -1) {
total_packets++;
try {
// System.out.println("Received chunk "+datachunk);
double x = decisiontable[index][2] / fmax;
int serverstartindex = (int) (pixels.length * (1 - x));
System.arraycopy(
array,
0,
smoothed_pixels,
(clientid * serverstartindex / (no_of_clients_needed))
+ (datachunk * size_of_each_chunk),
size_of_each_chunk);
chunks_recd++;
// the following lines added for facebook hackathon
Bitmap image = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
image.setPixel(j, i, smoothed_pixels[i * w + j]);
}
}
// FileOutputStream fout=new FileOutputStream("/storage/sdcard0/received_image.png");
if (completelyZero(smoothed_pixels) != 1) {
FileOutputStream fout = new FileOutputStream("/storage/sdcard0/received_image.png");
image.compress(Bitmap.CompressFormat.PNG, 100, fout);
fout.flush();
fout.close();
}
// the *5 part in the next line was added for facebook hackathon
if (chunks_recd == (no_of_times_client_calls_image_data) * no_of_clients_needed * 10) {
// possible infinite loop situation
while (server_done != 1) {
// System.out.println("Infinite loop!");
}
image = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
image.setPixel(j, i, smoothed_pixels[i * w + j]);
}
}
if (completelyZero(smoothed_pixels) != 1) {
// FileOutputStream fout=new FileOutputStream("/storage/sdcard0/received_image.png");
FileOutputStream fout = new FileOutputStream("/storage/sdcard0/received_image.png");
image.compress(Bitmap.CompressFormat.PNG, 100, fout);
fout.flush();
fout.close();
}
timeafter = System.currentTimeMillis();
// for facebook hackathon
System.out.println(" ");
System.out.println("everything done!. Time: " + (timeafter - timebefore) + " ms.");
System.out.println(" ");
timer_flag = 0;
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
@SuppressWarnings("unchecked")
public TabbedMainView(Object params) {
Context ctx = RhodesActivity.getContext();
mBackgroundColorEnable = false;
Vector<Object> tabs = null;
boolean place_tabs_bottom = false;
if (params instanceof Vector<?>) tabs = (Vector<Object>) params;
else if (params instanceof Map<?, ?>) {
Map<Object, Object> settings = (Map<Object, Object>) params;
Object bkgObj = settings.get("background_color");
if ((bkgObj != null) && (bkgObj instanceof String)) {
int color = Integer.parseInt((String) bkgObj) | 0xFF000000;
mBackgroundColor = color;
mBackgroundColorEnable = true;
}
Object callbackObj = settings.get("on_change_tab_callback");
if ((callbackObj != null) && (callbackObj instanceof String)) {
mChangeTabCallback = new String(((String) callbackObj));
}
Object placeBottomObj = settings.get("place_tabs_bottom");
if ((placeBottomObj != null) && (placeBottomObj instanceof String)) {
place_tabs_bottom = ((String) placeBottomObj).equalsIgnoreCase("true");
}
Object tabsObj = settings.get("tabs");
if (tabsObj != null && (tabsObj instanceof Vector<?>)) tabs = (Vector<Object>) tabsObj;
}
if (tabs == null) throw new IllegalArgumentException("No tabs specified");
int size = tabs.size();
host = new TabHost(ctx, null);
tabData = new Vector<TabData>(size);
tabIndex = 0;
TabWidget tabWidget = new TabWidget(ctx);
tabWidget.setId(android.R.id.tabs);
FrameLayout frame = new FrameLayout(ctx);
FrameLayout.LayoutParams lpf = null;
TabHost.LayoutParams lpt = null;
if (place_tabs_bottom) {
frame.setId(android.R.id.tabcontent);
lpf =
new FrameLayout.LayoutParams(
LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT, Gravity.TOP);
host.addView(frame, lpf);
lpt =
new TabHost.LayoutParams(
LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT, Gravity.BOTTOM);
host.addView(tabWidget, lpt);
} else {
lpt =
new TabHost.LayoutParams(
LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT, Gravity.TOP);
host.addView(tabWidget, lpt);
frame = new FrameLayout(ctx);
frame.setId(android.R.id.tabcontent);
lpf =
new FrameLayout.LayoutParams(
LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT, Gravity.BOTTOM);
host.addView(frame, lpf);
}
host.setup();
TabHost.TabSpec spec;
DisplayMetrics metrics = new DisplayMetrics();
WindowManager wm = (WindowManager) ctx.getSystemService(Context.WINDOW_SERVICE);
wm.getDefaultDisplay().getMetrics(metrics);
int selected_color = 0;
boolean selected_color_enable = false;
for (int i = 0; i < size; ++i) {
Object param = tabs.elementAt(i);
if (!(param instanceof Map<?, ?>)) throw new IllegalArgumentException("Hash expected");
Map<Object, Object> hash = (Map<Object, Object>) param;
Object labelObj = hash.get("label");
if (labelObj == null || !(labelObj instanceof String))
throw new IllegalArgumentException("'label' should be String");
Object actionObj = hash.get("action");
boolean use_current_view_for_tab = false;
Object use_current_view_for_tab_Obj = hash.get("use_current_view_for_tab");
if (use_current_view_for_tab_Obj != null) {
use_current_view_for_tab = ((String) use_current_view_for_tab_Obj).equalsIgnoreCase("true");
}
if (use_current_view_for_tab) {
actionObj = new String("none");
}
if (actionObj == null || !(actionObj instanceof String))
throw new IllegalArgumentException("'action' should be String");
String label = (String) labelObj;
String action = (String) actionObj;
String icon = null;
boolean reload = false;
boolean disabled = false;
int web_bkg_color = 0xFFFFFFFF;
Object iconObj = hash.get("icon");
if (iconObj != null && (iconObj instanceof String)) icon = "apps/" + (String) iconObj;
Object reloadObj = hash.get("reload");
if (reloadObj != null && (reloadObj instanceof String))
reload = ((String) reloadObj).equalsIgnoreCase("true");
Object selected_color_Obj = hash.get("selected_color");
if ((selected_color_Obj != null) && (selected_color_Obj instanceof String)) {
selected_color_enable = true;
selected_color = Integer.parseInt((String) selected_color_Obj) | 0xFF000000;
}
Object disabled_Obj = hash.get("disabled");
if (disabled_Obj != null && (disabled_Obj instanceof String))
disabled = ((String) disabled_Obj).equalsIgnoreCase("true");
Object web_bkg_color_Obj = hash.get("web_bkg_color");
if (web_bkg_color_Obj != null && (web_bkg_color_Obj instanceof String)) {
web_bkg_color = Integer.parseInt((String) web_bkg_color_Obj) | 0xFF000000;
}
spec = host.newTabSpec(Integer.toString(i));
// Set label and icon
BitmapDrawable drawable = null;
if (icon != null) {
String iconPath = RhoFileApi.normalizePath(icon);
Bitmap bitmap = BitmapFactory.decodeStream(RhoFileApi.open(iconPath));
if (disabled && (bitmap != null)) {
// replace Bitmap to gray
bitmap = bitmap.copy(Bitmap.Config.ARGB_8888, true); // prepare mutable bitmap
int x;
int y;
int bw = bitmap.getWidth();
int bh = bitmap.getHeight();
int nc = DISABLED_IMG_COLOR & 0xFFFFFF;
int c;
for (y = 0; y < bh; y++) {
for (x = 0; x < bw; x++) {
c = bitmap.getPixel(x, y);
c = nc | (c & 0xFF000000);
bitmap.setPixel(x, y, c);
}
}
}
if (bitmap != null)
bitmap.setDensity(DisplayMetrics.DENSITY_MEDIUM); // Bitmap.DENSITY_NONE);
drawable = new BitmapDrawable(bitmap);
drawable.setTargetDensity(metrics);
}
if (drawable == null) spec.setIndicator(label);
else spec.setIndicator(label, drawable);
SimpleMainView view = null;
if (use_current_view_for_tab) {
RhodesService r = RhodesService.getInstance();
MainView mainView = r.getMainView();
action = mainView.currentLocation(-1);
view = new SimpleMainView(mainView);
} else {
view = new SimpleMainView();
}
// Set view factory
if (web_bkg_color_Obj != null) {
if (!use_current_view_for_tab) {
view.setWebBackgroundColor(web_bkg_color);
}
host.setBackgroundColor(web_bkg_color);
}
TabData data = new TabData();
data.view = view;
data.url = action;
data.reload = reload;
if (use_current_view_for_tab) {
data.loaded = true;
tabIndex = i;
}
data.selected_color = selected_color;
data.selected_color_enabled = selected_color_enable;
data.disabled = disabled;
TabViewFactory factory = new TabViewFactory(data);
spec.setContent(factory);
tabData.addElement(data);
host.addTab(spec);
}
tabWidget.measure(host.getWidth(), host.getHeight());
int hh = tabWidget.getMeasuredHeight();
// if (hh < 64) {
// hh = 64;
// }
if (place_tabs_bottom) {
lpf.setMargins(0, 0, 0, hh);
} else {
lpf.setMargins(0, hh, 0, 0);
}
host.updateViewLayout(frame, lpf);
}
private static Bitmap sobel(Bitmap referenceImage) {
int blurFactor = 2;
/* Blur the image by changing the size */
Bitmap smallerOrig =
Bitmap.createScaledBitmap(
referenceImage,
referenceImage.getWidth() / blurFactor,
referenceImage.getHeight() / blurFactor,
true);
Bitmap blurredOrig =
Bitmap.createScaledBitmap(
smallerOrig,
smallerOrig.getWidth() * blurFactor,
smallerOrig.getHeight() * blurFactor,
true);
smallerOrig.recycle();
int width = blurredOrig.getWidth();
int height = blurredOrig.getHeight();
Bitmap edges = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
int[][] grays = new int[width][height];
for (int i = 0; i < width; i++) {
for (int j = 0; j < height; j++) {
grays[i][j] = -1;
}
}
int[] bins = new int[256];
int binsCount = 0;
int max = 0;
for (int x = 0; x < width; x++) {
for (int y = 0; y < height; y++) {
int rSum1 = 0, rSum2 = 0, rSum3 = 0, rSum4 = 0;
int dSum1 = 0, dSum2 = 0, dSum3 = 0, dSum4 = 0;
for (int i = -1; i <= 1; i++) {
for (int j = -1; j <= 1; j++) {
int xi = x + i, yj = y + j;
if (xi >= 0 && xi < width && yj >= 0 && yj < height) {
int gray = grays[xi][yj];
if (gray < 0) {
gray = rgb2gray(blurredOrig.getPixel(xi, yj));
grays[xi][yj] = gray;
}
rSum1 += gray * SOBEL_ROW[i + 1][j + 1];
dSum1 += gray * SOBEL_DIAG[i + 1][j + 1];
rSum2 += gray * SOBEL_ROW[1 - i][1 - j];
dSum2 += gray * SOBEL_DIAG[1 - i][1 - j];
rSum3 += gray * SOBEL_ROW[1 - i][j + 1];
dSum3 += gray * SOBEL_DIAG[1 - i][j + 1];
rSum4 += gray * SOBEL_ROW[i + 1][1 - j];
dSum4 += gray * SOBEL_DIAG[i + 1][1 - j];
}
}
}
int myGray =
(Math.max(
rSum1,
Math.max(
dSum1,
Math.max(
rSum2,
Math.max(
dSum2, Math.max(rSum3, Math.max(dSum3, Math.max(rSum4, dSum4))))))))
& 0xFF;
if (myGray > max) {
max = myGray;
}
if (myGray > 0) {
bins[myGray]++;
binsCount++;
}
int newPixel = (myGray << 24) | 0x00FFFFFF;
edges.setPixel(x, y, newPixel);
}
}
blurredOrig.recycle();
/* Find good gray cut value and remove pixels with intensity smaller than this cut */
int currentCount = 0;
int grayCut = 0;
int countCut = (int) (binsCount * 8.0 / 10.0);
for (int i = 0; i < max; i++) {
currentCount += bins[i];
if (currentCount >= countCut) {
grayCut = i;
break;
}
}
for (int x = 0; x < width; x++) {
for (int y = 0; y < height; y++) {
int pixel = edges.getPixel(x, y);
if (((pixel >> 24) & 0xFF) < grayCut) {
edges.setPixel(x, y, 0x00FFFFFF);
}
}
}
return edges;
}
public Bitmap delineate(Point point, AsyncTask task) {
if (task instanceof DelineationListener) {
delineationListener = (DelineationListener) task;
} else {
throw new ClassCastException("WatershedDataset - Task must implement DelineationListener");
}
int numrows = this.dem.length;
int numcols = this.dem[0].length;
BitmapFactory.Options options = new BitmapFactory.Options();
options.inPurgeable = true;
options.inInputShareable = true;
Bitmap icon =
BitmapFactory.decodeResource(
MainActivity.context.getResources(), R.drawable.watershedelineation, options);
Bitmap delinBitmap = Bitmap.createScaledBitmap(icon, numcols, numrows, false);
for (int r = 1; r < numrows - 1; r++) {
for (int c = 1; c < numcols - 1; c++) {
delinBitmap.setPixel(numcols - 1 - c, r, Color.TRANSPARENT);
}
}
delineatedArea = 0; // number of cells in the delineation
delineatedStorageVolume = 0.0;
// discover adjacent points that may be part of a puddle
List<Point> indicesToCheck = new ArrayList<Point>();
List<Point> indicesToCheckPuddle = new ArrayList<Point>();
float puddleElevation = this.dem[point.y][point.x];
indicesToCheck.add(point);
indicesToCheckPuddle.add(point);
while (!indicesToCheckPuddle.isEmpty()) {
int r = indicesToCheckPuddle.get(0).y;
int c = indicesToCheckPuddle.get(0).x;
indicesToCheckPuddle.remove(0);
if (delinBitmap.getPixel(numcols - 1 - c, r) == Color.RED) {
continue;
}
delinBitmap.setPixel(numcols - 1 - c, r, Color.RED);
delineatedArea++;
delineatedStorageVolume += dem[r][c] - originalDem[r][c];
for (int x = -1; x < 2; x++) {
for (int y = -1; y < 2; y++) {
if (x == 0 && y == 0) {
continue;
}
if (r + y >= numrows - 1 || r + y <= 0 || c + x >= numcols - 1 || c + x <= 0) {
continue;
}
if (dem[r + y][c + x] == puddleElevation
&& delinBitmap.getPixel(numcols - 1 - (c + x), (r + y)) != Color.RED) {
indicesToCheckPuddle.add(new Point(c + x, r + y));
indicesToCheck.add(new Point(c + x, r + y));
}
}
}
}
// Add a buffer around the chosen pixel to provide a more likely meaningful delineation
for (int x = -3; x < 4; x++) {
for (int y = -3; y < 4; y++) {
if (point.y + y >= numrows - 1
|| point.y + y <= 0
|| point.x + x >= numcols - 1
|| point.x + x <= 0) {
continue;
}
if (delinBitmap.getPixel(numcols - 1 - (point.x + x), (point.y + y)) != Color.RED) {
indicesToCheck.add(new Point(x + point.x, y + point.y));
delinBitmap.setPixel(numcols - 1 - (point.x + x), (point.y + y), Color.RED);
delineatedArea++;
delineatedStorageVolume +=
dem[point.y + y][point.x + x] - originalDem[point.y + y][point.x + x];
}
}
}
// Now find all cells draining to either the puddle or the buffered delineation point
while (!indicesToCheck.isEmpty()) {
int r = indicesToCheck.get(0).y;
int c = indicesToCheck.get(0).x;
indicesToCheck.remove(0);
if (flowDirection[r][c].parentList.isEmpty()) {
continue;
}
for (int i = 0; i < flowDirection[r][c].parentList.size(); i++) {
if (delinBitmap.getPixel(
numcols - 1 - flowDirection[r][c].parentList.get(i).x,
flowDirection[r][c].parentList.get(i).y)
!= Color.RED) {
indicesToCheck.add(flowDirection[r][c].parentList.get(i));
delinBitmap.setPixel(
numcols - 1 - flowDirection[r][c].parentList.get(i).x,
flowDirection[r][c].parentList.get(i).y,
Color.RED);
delineatedArea++;
delineatedStorageVolume += dem[r][c] - originalDem[r][c];
}
}
}
return delinBitmap;
}
public Bitmap takePicture() {
Bitmap bm = null;
byte[] ba;
if (getCommands != null) {
ba = getCommands.getPictureArray();
bm = Bitmap.createBitmap(256, 192, Bitmap.Config.ARGB_8888);
int w = 256;
int h = 192;
int vy, vu, y1v, y1u, uy, uv, y2u, y2v;
int V = 0, Y = 0, U = 0;
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
if (j >= 3) {
vy = -1;
vu = 2;
y1v = -1;
y1u = -3;
uy = -1;
uv = -2;
y2u = -1;
y2v = -3;
} else {
vy = 1;
vu = 2;
y1v = 3;
y1u = 1;
uy = 1;
uv = 2;
y2u = 3;
y2v = 1;
}
if ((j % 4) == 0) {
V = ba[i * w + j] & 0xff;
Y = ba[i * w + j + vy] & 0xff;
U = ba[i * w + j + vu] & 0xff;
} else if ((j % 4) == 1) {
Y = ba[i * w + j] & 0xff;
V = ba[i * w + j + y1v] & 0xff;
U = ba[i * w + j + y1u] & 0xff;
} else if ((j % 4) == 2) {
U = ba[i * w + j] & 0xff;
Y = ba[i * w + j + uy] & 0xff;
V = ba[i * w + j + uv] & 0xff;
} else if ((j % 4) == 3) {
Y = ba[i * w + j] & 0xff;
U = ba[i * w + j + y2u] & 0xff;
V = ba[i * w + j + y2v] & 0xff;
}
U = U - 128;
V = V - 128;
// Y = Y;
bm.setPixel(
j,
i,
Color.rgb(
(int) Math.max(Math.min(Y + 1.13983 * V, 255), 0),
(int) Math.max(Math.min(Y - 0.39466 * U - 0.58060 * V, 255), 0),
(int) Math.max(Math.min(Y + 2.03211 * U, 255), 0)));
}
}
}
return bm;
}
public static Bitmap blurImage(Bitmap bmp) {
if (ImageCache.get("blurImage") != null) {
return ImageCache.get("blurImage");
}
int width = bmp.getWidth();
int height = bmp.getHeight();
Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
int pixColor = 0;
int newR = 0;
int newG = 0;
int newB = 0;
int newColor = 0;
int[][] colors = new int[9][3];
for (int i = 1, length = width - 1; i < length; i++) {
for (int k = 1, len = height - 1; k < len; k++) {
for (int m = 0; m < 9; m++) {
int s = 0;
int p = 0;
switch (m) {
case 0:
s = i - 1;
p = k - 1;
break;
case 1:
s = i;
p = k - 1;
break;
case 2:
s = i + 1;
p = k - 1;
break;
case 3:
s = i + 1;
p = k;
break;
case 4:
s = i + 1;
p = k + 1;
break;
case 5:
s = i;
p = k + 1;
break;
case 6:
s = i - 1;
p = k + 1;
break;
case 7:
s = i - 1;
p = k;
break;
case 8:
s = i;
p = k;
}
pixColor = bmp.getPixel(s, p);
colors[m][0] = Color.red(pixColor);
colors[m][1] = Color.green(pixColor);
colors[m][2] = Color.blue(pixColor);
}
for (int m = 0; m < 9; m++) {
newR += colors[m][0];
newG += colors[m][1];
newB += colors[m][2];
}
newR = (int) (newR / 9F);
newG = (int) (newG / 9F);
newB = (int) (newB / 9F);
newR = Math.min(255, Math.max(0, newR));
newG = Math.min(255, Math.max(0, newG));
newB = Math.min(255, Math.max(0, newB));
newColor = Color.argb(255, newR, newG, newB);
bitmap.setPixel(i, k, newColor);
newR = 0;
newG = 0;
newB = 0;
}
}
ImageCache.put("blurImage", bitmap);
return bitmap;
}