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Zooming methods:Īlthough there are many methods that does this job, but we are going to discuss the most common of them here.

Rather we will focus on the methods, that enable to zoom a digital image. Now since we are leaning digital image processing, we will not focus, on how an image can be zoomed optically using lens or other stuff. The following picture is the result of digital zoom done through one of the following methods given below in the zooming methods. The same effect of digital zoom can be seen after the image is taken through your computer by using an image processing toolbox / software, such as Photoshop. Due to magnified center, it looks like that the object is closer to you.ĭuring a digital zoom, the pixels got expand, due to which the quality of the image is compromised. During a digital zoom, the center of the image is magnified and the edges of the picture got crop out.

Digital Zoom:ĭigital zoom is basically image processing within a camera. In optical zoom the lens is physically extend to zoom or magnify an object. In optical zoom, an image is magnified by the lens in such a way that the objects in the image appear to be closer to the camera. The result of the optical zoom is far better then that of digital zoom. The optical zoom is achieved using the movement of the lens of your camera. These two types of zoom are supported by the cameras. We will discuss them in detail in the next tutorial. It is done through many different algorithms in which we manipulate pixels to zoom in the required portion.

The second step is to zoom once an image has been captured. This zoom involves hardware and mechanical movement. The first step includes zooming before taking an particular image. You can zoom something at two different steps. Zooming an image has many wide applications ranging from zooming through a camera lens, to zoom an image on internet e.t.c. Zooming simply means enlarging a picture in a sense that the details in the image became more visible and clear. In this tutorial we are going to introduce the concept of zooming, and the common techniques that are used to zoom an image.