private void compareImages() {
for (int row = 0; row < image1.height(); row++) {
for (int cell = 0; cell < image1.width(); cell++) {
CvScalar rgbBack = cvGet2D(image1, row, cell);
double b_back = rgbBack.getVal(0) + 100;
double g_back = rgbBack.getVal(1) + 100;
double r_back = rgbBack.getVal(2) + 100;
CvScalar rgb_Obj = cvGet2D(image2, row, cell);
double b_obj = rgb_Obj.getVal(0);
double g_obj = rgb_Obj.getVal(1);
double r_obj = rgb_Obj.getVal(2);
double r_diff = r_back + r_obj - 2 * r_obj; // Math.min(r_back, r_obj );
double g_diff = g_back + g_obj - 2 * r_obj; // Math.min(g_back, g_obj );
double b_diff = b_back + b_obj - 2 * r_obj; // Math.min(b_back, b_obj );
CvScalar rgb = CV_RGB(r_diff, g_diff, b_diff);
cvSet2D(diff, row, cell, rgb);
double bl_diff = (r_diff + g_diff + b_diff) / 3;
CvScalar bl_pix = CV_RGB(bl_diff, bl_diff, bl_diff);
cvSet2D(diff_black, row, cell, bl_pix);
}
}
}
protected void processImage(byte[] data, int width, int height) {
// First, downsample our image and convert it into a grayscale IplImage
int f = SUBSAMPLING_FACTOR;
if (grayImage == null || grayImage.width() != width / f || grayImage.height() != height / f) {
grayImage = IplImage.create(width / f, height / f, IPL_DEPTH_8U, 1);
}
int imageWidth = grayImage.width();
int imageHeight = grayImage.height();
int dataStride = f * width;
int imageStride = grayImage.widthStep();
ByteBuffer imageBuffer = grayImage.getByteBuffer();
for (int y = 0; y < imageHeight; y++) {
int dataLine = y * dataStride;
int imageLine = y * imageStride;
for (int x = 0; x < imageWidth; x++) {
imageBuffer.put(imageLine + x, data[dataLine + f * x]);
}
}
cvClearMemStorage(storage);
faces = cvHaarDetectObjects(grayImage, classifier, storage, 1.1, 3, CV_HAAR_DO_CANNY_PRUNING);
postInvalidate();
}
public ImageHandler(String imagePath_1, String imagePath_2) {
this.image1 = cvLoadImage(imagePath_1);
this.image2 = cvLoadImage(imagePath_2);
this.diff = image1.clone();
this.diff_black = image2.clone();
compareImages();
this.image1_line = image1.clone();
this.image2_line = image2.clone();
this.diff_line = diff.clone();
this.width = image1.width();
this.height = image1.height();
this.vals = new ArrayList<Map<String, Double>>();
this.canvas1 = new CanvasFrame("Image 1", 1.0);
this.canvas2 = new CanvasFrame("Image 2", 1.0);
this.canvas3 = new CanvasFrame("Diff", 1.0);
this.canvas4 = new CanvasFrame("Diff_black", 1.0);
}
@Override
protected void onDraw(Canvas canvas) {
Paint paint = new Paint();
paint.setColor(Color.RED);
paint.setTextSize(20);
String s = "FacePreview - This side up.";
float textWidth = paint.measureText(s);
canvas.drawText(s, (getWidth() - textWidth) / 2, 20, paint);
if (faces != null) {
paint.setStrokeWidth(2);
paint.setStyle(Paint.Style.STROKE);
float scaleX = (float) getWidth() / grayImage.width();
float scaleY = (float) getHeight() / grayImage.height();
int total = faces.total();
for (int i = 0; i < total; i++) {
CvRect r = new CvRect(cvGetSeqElem(faces, i));
int x = r.x(), y = r.y(), w = r.width(), h = r.height();
canvas.drawRect(x * scaleX, y * scaleY, (x + w) * scaleX, (y + h) * scaleY, paint);
}
}
}