Medium conveying apparatus to determine whether multi-feed has occurred based on whether outer shape of object area in input image is rectangular
AssigneePfu Limited
InventorMasaaki Sakai
Life of this patent
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Abstract
A medium conveying apparatus includes a conveying roller to convey a rectangular medium, and a processor to generate an input image acquired by imaging the conveyed medium, detect an overlap of the conveyed medium, detect an object area from the input image, determine whether an outer shape of the object area is rectangular, determine whether a multi-feed of the medium has occurred based on whether the overlap of the medium has been detected and whether the outer shape of the object area is rectangular, and execute an abnormality processing when it is determined that the multi-feed of the medium has occurred.
Claims12
A medium conveying apparatus comprising:
- a conveying roller to convey a rectangular medium;
- and
- a processor to
- generate an input image acquired by imaging the conveyed medium,
- determine whether an overlap of the conveyed medium has occurred,
- determine whether an outer shape of an object area included in the input image is rectangular,
- determine whether a multi-feed of the medium has occurred based on whether it is determined that the overlap of the medium has occurred and whether the outer shape of the object area is rectangular, and
- execute an abnormality processing when it is determined that the multi-feed of the medium has occurred.
A method for determining a multi-feed of a medium, comprising:
- conveying a rectangular medium, by a conveying roller;
- generating an input image acquired by imaging the conveyed medium;
- detecting an overlap of the conveyed medium;
- detecting an object area from the input image;
- determining whether an outer shape of the object area is rectangular;
- determining whether a multi-feed of the medium has occurred based on whether the overlap of the medium has been detected and whether the outer shape of the object area is rectangular;
- and
- executing an abnormality processing when it is determined that the multi-feed of the medium has occurred.
A computer-readable, non-transitory medium storing a computer program, wherein the computer program causes a medium conveying apparatus including a conveying roller to convey a rectangular medium, to execute a process, the process comprising:
- generating an input image acquired by imaging the conveyed medium;
- detecting an overlap of the conveyed medium;
- detecting an object area from the input image;
- determining whether an outer shape of the object area is rectangular;
- determining whether a multi-feed of the medium has occurred based on whether the overlap of the medium has been detected and whether the outer shape of the object area is rectangular;
- and
- executing an abnormality processing when it is determined that the multi-feed of the medium has occurred.
Dependencies are inferred from the claim text.