Image input apparatus
AssigneeNEC Corporation
InventorsMitsuru Watanabe, Masato Iwakawa, Satoshi Singu, Hisato Kato
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Abstract
An illumination unit 6 illuminates a scene object (i.e., mail) 2 moved in a predetermined direction by a transport means (transport conveyor) 1, the imaging distance up to the scene object 2 is detected before imaging, and auto-focusing is made according to distance data detected at the time of the imaging.
Claims27
An image input apparatus for illuminating a scene object moved in a predetermined direction by a transport means from an illuminating means, imaging the scene object with an imaging means and discriminating data of the scene object from the imaged data, wherein:
- an imaging distance up to the scene object is detected before the imaging, and auto-focusing is made according to the detected distance data at the time of the imaging.
An image input apparatus comprising:
- a transport means for moving a scene object in a predetermined direction;
- an illuminating means including a light source for emitting a linear light beam toward the scene object being moved in the predetermined direction by the transport means and a glass member for cutting off heat rays and ultraviolet rays from the light source and transmitting visible light rays;
- an imaging means for imaging the scene object illuminated by the linear light beam in a linear field of view;
- a detecting means for detecting the imaging distance up to the scene object prior to the imaging;
- and
- an auto-focusing means according to the distance data detected by the detecting means at the time of the imaging.
An image input apparatus according to one of claims land 2, wherein the imaging means includes a focusing means, a photoelectric conversion means, a video signal processing means and an image data transfer means.
Dependencies are inferred from the claim text.