Peripheral with image processing function

A peripheral, comprising:

• a scanning module performing a one-time scan operation on a shaped document to obtain a visible light image and an infrared image in an original representing mode, wherein the infrared image comprises periphery information corresponding to a periphery of the shaped document;
• and
• a control processing module electrically connected to the scanning module, wherein in the original representing mode, the control processing module processes the visible light image into a final image according to the periphery information, wherein the final image represents the periphery of the shaped document and does not represent a periphery set by a user.

A peripheral, comprising:

• a scanning module performing a one-time scan operation on a document to obtain a visible light image and an infrared image;
• and
• a control processing module electrically connected to the scanning module, wherein the control processing module determines periphery information according to the infrared image, and processes the visible light image into a final image according to the periphery information corresponding to a periphery of the document.