Panoramic photography can cover several different techniques to achive a similar result.
A true panorama is an image that shows more of a scene than it is possible to view with the naked eye without turning the head from side to side.
This can be achieved using a specialist panoramic lens that has an ultra wide angle of view or by taking several shots and stitching them together using image manipulation software on the computer.
There is another way to achieve what is known as a pseudo panorama. This is achieved by simply cropping the top and bottom off of a wide angled shot turning it into a letterbox shape.
When using this technique it is important to ensure that there is sufficient visual interest and sharpness in the detail left in the final image.
There are many different software packages available that will help you to create your panorama from your individual frames. All will have their own way of doing it and there is no point in me trying to go through all the different ways with you here.
Obviously the better quality software packages will give you more control over the process and so you will end up with a better quality and very convincing panoramic picture.
Basically the process is that you will create a blank panoramic photography canvas in your software package and you will layer the individual frames onto it. The frames will need to be matched together using the overlaps and then blend them together so that no join can be seen. If the frames have all been taken with the same settings and have been kept at the same level then they should fit together well and should produce a seamless image.