I need to mosaic a couple of images (satellite, 0.5*0.5 m high resolution). After mosaicking, I will do rectification using my own GCP from the field.
For the example, I have image 1 and image 2, I want to put image 2 to covering cloud area in image 1 (logically image 1 has a bigger area than 2).
My problem is, the image doesn't align with each other. Therefore,
My Question 1: What is the best solution, should I choose option #1 = doing "image to image" correction from image 2 to image 1, then do mosaicking and after that geometric correction or option #2 = doing geometric correction first for each image using my own GCP then do the mosaic process. Which one has the best result?
My Question 2: If I choose option #1, a new problem occurs. When I want to align visually both images I get high RSME on the table (which is my client want low RSME), but if I stay with low RSME I get a bad visual image, here is my screenshot when doing "image to image".
I have been trying use less or many points from image 1 act like GCP for image 2 to do "image to image" correction, been trying all transformation (1st, sec, third polynomial, spline and others) but still can't get good visual and low RSME, does anyone know how to fix this?
Moreover, if I choose option #2, which is a bad solution considering each image have a different distortion, is not it?