Which invariant image matching do I use? PNG format

1. Query Image

2. Database Image

My objective are:

Step 1: When read the query image, it will get 0-255 image color pixels.

Step 2: Image invariant matching method can start finding from the top left of the image until whole image (row and columns). To detect the image color pixel in the range 0-254 (does not detect 255 image color pixels is because 255 = blank area, so have to exclude it)

Step 3: Detect the boundary and location with the image color pixel in the range 0-254.

Step 4: After detect the location (query image). It followed its location to compare with database image.

Means

1. Query image

2. Database image

Step 5: Use Euclidean distance to find out the dissimilarity value as 0.