Buy 2-pixel RGB colors, to identify if the image is symmetrical or not

I hope you can help me, my code tries to identify if an image is symmetrical or not (assuming that the image is being compared in half on the X axis - left side with the right side)

Description of my code:

1.- I have a "nested for" that runs from the pixel at position (0,0) to ((getWidth / 2), getHeight), identifying its RGB color with alpha 255. => (X, Y)

2.- For each coordinate of the pixel traversed in the nested for, I create the coordinate of the pixel in the same position, located in the other half of the image (this part is correct) in the following way: "Symmetry_X = ((getWidth - (xi + 1)) + 1); ", I get your RGB code with alpha 255. => (Symetry_X, Y)

3.- My problem is, how do I compare the RGB code of each initial pixel (the one that runs through the nested for) with the RGB of the created coordinate. => RGB-Alpha (X, Y) <===> RGB-Alpha (Symetry_X, Y).

4.-I am giving you the solution as follows: Sum of the RGB and Alpha values ​​of both pixels and comparing the values ​​of both summations (each pair of pixels) in an if, which determines if it is symmetric or not. (Is that correct? In what other way, perhaps more simple, can I give you a solution?).

    BitmapDrawable drawable = (BitmapDrawable) imgviewREXBlancoNegro.getDrawable();      Bitmap bitmap = drawable.getBitmap();        int getWidth =  bitmap.getWidth();      int getHeight = bitmap.getHeight();        int color1,color2,Simetria_X;        for (int xi = 0; xi <= (getWidth/2); xi++) {          for (int yi = 0; yi <= getHeight-1; yi++) {                int coordenada = bitmap.getPixel(xi, yi);// pixel              int r = Color.red(coordenada);              int g = Color.green(coordenada);              int b = Color.blue(coordenada);              int alpha = Color.alpha(coordenada);              color1=r+g+b+alpha;                  Symmetry_X=((getWidth-(xi+1))+1);              int coordenada1 = bitmap.getPixel(Symmetry_X, yi);// pixel              int r1 = Color.red(coordenada1);              int g1 = Color.green(coordenada1);              int b1 = Color.blue(coordenada1);              int alpha1 = Color.alpha(coordenada1);              color2=r1+g1+b1+alpha1;                  if(color1!=color2){                  LayoutInflater inflater = getLayoutInflater();                  View layout = inflater.inflate(R.layout.activity_mini_mensaje, (ViewGroup) findViewById(R.id.miniContenedor));                  TextView text = (TextView) layout.findViewById(R.id.tvMensaje);                  text.setText("It is symmetrical");                  Toast toast = new Toast(getApplicationContext());                  toast.setDuration(Toast.LENGTH_LONG);                  toast.setView(layout);                  toast.show();                  return;              }else{                  LayoutInflater inflater = getLayoutInflater();                  View layout = inflater.inflate(R.layout.activity_mini_mensaje, (ViewGroup) findViewById(R.id.miniContenedor));                  TextView text = (TextView) layout.findViewById(R.id.tvMensaje);                  text.setText("It is not symmetrical");                  Toast toast = new Toast(getApplicationContext());                  toast.setDuration(Toast.LENGTH_LONG);                  toast.setView(layout);                  toast.show();              }          }      }  

https://stackoverflow.com/questions/67443455/buy-2-pixel-rgb-colors-to-identify-if-the-image-is-symmetrical-or-not May 08, 2021 at 10:08AM