DIGITAL IMAGE SENSING APPARATUS, IMAGE PROCESSING SYSTEM, AND DIGITAL IMAGE SENSING METHOD

A digital camera is provided with an optical filter unit 43 which is movable in the slide direction SL in front of the CCD 41, and infrared light emitters 25 and 32 for emitting near-infrared light. The optical filter 43 has an infrared cut filter 45 for cutting light in the infrared range, and a visible light cut filter for selectively transmitting light of the infrared range by cutting light in the visible light range. While maintaining the identicalness of the main object, the infrared cut filter 45 is disposed above the CCD 41 to acquire visible light image data via the CCD 41, and the object is irradiated with infrared light emitted from the infrared emitters 25 and 32, and the visible light cut filter is disposed above the CCD 41 to acquire infrared image data, i.e., non-visible light image data, by the CCD 41. As a result, a visible light image and a non-visible light image are easily acquired of the same object.