It's not clear what your goal is, but if you are trying to eliminate the background, you can use the Pen tool to trace around the rolls of paper, then create a Layer Mask to hide the background. Don't save as a JPEG, which does not support transparency. Use .psd, .tiff, or .png.
Please clarify if this is not what you are asking.
I suggest you familiarize yourself with Photoshop’s Pen tool and its use in making Masks. YouTube would be a good source for instruction. To make your job a bit easier, make a copy of the Blue channel and use Curves to increase the object-edge contrast. Use the modified copy of the Blue channel as a guide as you use the Pen tool.