This can be done in UiPath with SendHotKeys - try with this, open the excel file using the Excel application scope and select the range you want to copy as image. Then use these keys Alt + H F S in SendHotkey activity, that will open the Excel’s “Copy Picture” popup. Then use as per your need.
Select a cell, a range or an object, press the Alt key and release it before you press H, C, P and Enter.