Are you trying to hyperlink between text boxes so you click on a text box and it jumps you to another box rather than a cell location? I dont think you can do that as hyperlinks link to cells.
Are you trying to zoom in on a section of an image - if so you could overlay freeform or other shapes over different bits of your image and hyperlink from these to different sections as zoomed images on different sheets and have a "Home" button on each which got you back to your master sheet. You could also add hyperlinks at the top, bottom and sides of each image to allow you to "navigate" between zoomed sections if that was wanted.