Compare the equality of objects in 2 images c#

[Naijacoding]

I'm trying to compare the equality of rectangles in 2 bitmaps. I'm using the AForge library. one is the template and the other is the form. I have tried this but it seems very crude to me because the it has so many iterations which makes the program very slow. It works but the problem is that the program hangs because of too many iterations. Please is there something I'm missing? I'm I on the right track or something? Please help and pardon my crude codes below.

Bitmap bitmap = new Bitmap(pictureBox1.Image);
Bitmap bitmap2 = new Bitmap(pictureBox2.Image);


// create an instance of blob counter algorithm
BlobCounter blobCounter = new BlobCounter();
blobCounter.MinWidth = 5;
blobCounter.MinHeight = 5;
blobCounter.FilterBlobs = true;
blobCounter.ObjectsOrder = ObjectsOrder.Size;
blobCounter.ProcessImage(bitmap);
BlobCounter blobCounter2 = new BlobCounter();
blobCounter2.MinWidth = 5;
blobCounter2.MinHeight = 5;
blobCounter2.FilterBlobs = true;
blobCounter2.ObjectsOrder = ObjectsOrder.Size;
blobCounter2.ProcessImage(bitmap2);


Rectangle[] rects = blobCounter.GetObjectsRectangles();

Rectangle[] rects2 = blobCounter2.GetObjectsRectangles();

foreach (Rectangle recs in rects)
foreach (Rectangle recs2 in rects2)

if (rects.Length > 0 )
{
if (rects2.Length > 0)
{
for (int x = 0; x < recs.Width & x < recs.Height; x++)
{
// for (int x2 = 0; x2 < recs2.Width; x2++)
for (int y = 0; y < recs2.Width & y < recs2.Height; y++)
{
// for (int y2 = 0; y2 < recs2.Height; y2++)

if (recs.Equals(recs2))
{
this.Refresh();
//listBox1.Items.Add("TRUE");
Console.WriteLine("TRUE");



}
else
{
//listBox1.Items.Add("FALSE");
Console.WriteLine("FALSE");
}
.....

[willmotil]

not sure what is meant by
the equality of two objects in two images
when your comparing sets of rectangles in two images
when the fields are called blob this and that implying irregular shapes

maybe you can clarify more specifically what conditions must be
checked and what the limits are in order to evaluate success or failure

are you simply checking that two images are the same size or
that two array's have matching rectangles that are found from blobCounter.GetObjectsRectangles();
the question is a little confusing
it appears your instead trying to build a list of matching rectangles
that are given by that function from analyzing the images

either way i noticed that you might have a typo in that code
in both for loops you have & instead of && these two are not the same
the first & is a bitmath or-ing operator
were && is a boolean conditional operator
for (int x = 0; x < recs.Width & x < recs.Height; x++)
i don't think you intend to be using &

i didn't test this , maybe something like so is what your after
this is not particularly fast its n^2 i think but it should work

for(i = 0; i < recs.Length;i++){
 for(j = 0; j < recs2.Length;j++){
   Rectangle a = recs[i];
   Rectangle b = recs2[j];
   if(a.X == b.X && a.Y == b.Y && a.Width == b.Width && a.Height == b.Height)
   {
    Console.WriteLine("TRUE  recs index "+ i +" ,recs2 index " + j);
   }
 }
}

if you really need something faster then you will need to look into using
a spacial partitioning algorithm a quad tree or simpler grid bucket